Category Archives: Waste Management

Harnessing Bioenergy from Everyday Rubbish

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Converting everyday rubbish into usable energy once seemed like science fiction, but bioenergy has made it reality. This sustainable solution transforms waste into valuable fuel sources while also benefiting the environment.

Bioenergy provides a profitable way to upcycle discarded items into clean power instead of letting them pile up in landfills. What was once treated as garbage now becomes a source of renewable energy for society’s needs. With bioenergy, there is potential to turn waste into an environmental and economic asset.

bioenergy from municipal waste

Definition of Bioenergy

You might be wondering what exactly is bioenergy? In simple terms, bioenergy is energy derived from organic materials. These materials can range from agricultural residues, forest waste, food scraps or even animal manure. The process of converting these ‘biomass’ resources into bioenergy can take several forms, like burning for heat and power, fermenting for biofuels or subjecting them to anaerobic digestion to generate biogas.

Various Sources of Bioenergy

Nature offers an abundance of sources for generating bioenergy. You have wood pellets and chips from forests, manure from farming activities, crop residues left after harvests and even energy crops grown explicitly for this purpose like switchgrass or miscanthus. The spectrum doesn’t end here though; household waste also qualifies as a potential contributor to this list which you will explore more next.

Understanding Everyday Rubbish

If you were thinking that household rubbish is just useless trash, think again! Household waste consists of food scraps, glass bottles, plastic containers, paper products – stuff that you discard every day. This seemingly insignificant rubbish when recycled correctly can generate appreciable amounts of bioenergy contributing towards sustainable energy practices for society.

Contribution of Rubbish Removals

The company Same Day Rubbish Removals plays a significant part in Melbourne’s waste management ecosystem by providing quick and efficient removal services. They responsibly handle all types of waste – from household junk to electronic waste and green waste which can boost the raw material sources for bioenergy. You can see the services on offer here https://www.samedayrubbishremovalmelbourne.com.au/.

Beyond mere rubbish collection and disposal, they also advocate for proper recycling which aligns perfectly with the ideal principles of bioenergy generation and closing the loop on waste management for a sustainable future.

Importance of Bioenergy

Bioenergy today holds tremendous importance in the roadmap towards carbon neutrality. It serves as a renewable alternative to fossil fuels thus reducing our carbon footprint. Not only for large industries, but it can also be adopted at the community level through bioenergy plants helping cities reduce their reliance on non-renewable energy sources. The end products such as electricity, heat or biofuels have wide applications across sectors.

 

Role of Everyday Rubbish

Everyday rubbish plays a crucial role in this bioenergy narrative. Home waste when segregated correctly can segregate organic wastes fit for conversion into bioenergy. Post-consumer packaging materials, when recycled, could divert significant volumes of waste from landfills and transform them into value-added bioenergy resources. Our household waste has the potential to shift the energy paradigm!

Detailed Process of Conversion

The conversion of biomass into bioenergy isn’t just a one-step process. It involves several stages: collection, separation and treatment followed by chemical reactions that help extract energy. Techniques such as anaerobic digestion turn organic wastes into biogas or advanced thermal technologies like gasification that convert solid waste into synthetic fuels.

Everyday Rubbish to Bioenergy: How?

If you are curious about how everyday rubbish transforms into bioenergy, carry on reading! Organic kitchen wastes or garden clippings undergo anaerobic digestion in specially designed digesters to produce methane-rich gas which is subsequently burnt to generate heat and electricity. Non-organic materials like plastics get subjected to advanced thermal methods to produce an oil-like substance that can substitute crude oil in refineries.

Benefits of Bioenergy Production

Bioenergy production brings multiple perks. Obviously, the generation of renewable energy is its biggest appeal, allowing us to cut back on fossil fuel usage. However, it’s also a great solution for managing waste more effectively and reducing the volume going to landfills daily. Additionally, it promotes recycling and could stimulate new employment and business opportunities in the waste management sector.

Anaerobic Digestion of Food Wastes

Challenges in Bioenergy Harnessing

Despite its myriad of benefits and potentials, bioenergy faces certain challenges that need to be tackled effectively. Issues such as high initial capital costs for setting up bioenergy plants and the lack of advanced technology for efficient transformation remain roadblocks. Apart from these, there is also a considerable lack of energy subsidies and regulatory policies favoring bioenergy.

Apart from this, the fluctuating biomass feedstock prices could affect the economic viability of bioenergy projects. Also, the public’s perception towards waste-to-energy conversion and their willingness to segregate their waste can also pose uncertainties in success rates.

Role of Technology in Bioenergy

Technology plays an irreplaceable role in streamlining and accelerating the conversion of everyday rubbish into bioenergy. Advanced processing technologies like anaerobic digestion, gasification, pyrolysis and fermentation not only make bioenergy production possible but have been instrumental in increasing its efficiency over time.

This evolution has been further revolutionized by innovations like next-generation sequencing techniques that promise improvements in the variety and capacity of bio-energy fuels achievable from waste.

The Concept of Waste Hierarchy

The concept of the waste hierarchy revolves around three key principles: reduce, reuse, and recycle. This system places a high emphasis on reducing waste generation to the maximum extent possible, reusing materials as long as their useful life permits and recycling what’s left to extract maximum value.

This strategy is fundamental to converting rubbish into bioenergy. The better people adhere to these principles, the more efficiently people can convert everyday waste into bioenergy fueling a closed-loop circular economy.

International Approaches to Bioenergy

The adoption of bioenergy strategies varies worldwide. In Europe, especially in countries like Germany and Sweden, aggressive renewable energy policies have promoted significant advances in bioenergy generation from waste. Conversely, in developing regions like Africa and South America, biomass-based heating and power applications are mainly used due to infrastructure constraints.

Every nation has different potential and challenges in embracing bioenergy. What’s crucial is adapting technologies to the specifics of each nation to fully harness the potential of waste-based bioenergy.

Different Bioenergy Technologies

There is a broad array of technologies that enable the transformation of rubbish to bioenergy. Anaerobic digestion and fermentation techniques predominantly deal with organic materials like food waste and crop residues. Pyrolysis and gasification are more suited for non-organic waste, converting complex matter into simpler forms that can be burned as fuels or further processed into biofuels or chemicals.

Such a spectrum of technologies can address varying types of wastes and produce diverse outputs making waste management versatile and flexible.

Policies on Bioenergy and Waste Management

Effective policies can stimulate bioenergy production from everyday rubbish removal. Strong waste management regulations coupled with initiatives that incentivize bioenergy projects could expedite the adoption of this technology in not only industries but also smaller communities.

Acknowledging the environmental benefits of waste-based bioenergy through a carbon credit system can create an enabling environment for this sector to thrive.

The Summary

Synthesizing bioenergy from rubbish is a poignant example of sustainability in action. As people strive towards a cleaner planet, this alternate strategy could play a significant role. It’s about viewing our wastes not as a problem, but as an answer. To paraphrase Da Vinci, you know you have learned enough when you have grasped the principle of turning everything harmful into something beneficial. That is undoubtedly what converting solid waste into bioenergy achieves.

Role of Anaerobic Digestion in Food Waste Management

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Food waste is one of the single largest constituent of municipal solid waste stream. In a typical landfill, food waste is one of the largest incoming waste streams and responsible for the generation of high amounts of methane. Diversion of food waste from landfills can provide significant contribution towards climate change mitigation, apart from generating revenues and creating employment opportunities.

 

Of the different types of organic wastes available, food waste holds the highest potential in terms of economic exploitation as it contains high amount of carbon and can be efficiently converted into biogas and organic fertilizer. Food waste can either be utilized as a single substrate in a biogas plant, or can be co-digested with organic wastes like cow manure, poultry litter, sewage, crop residues, abattoir wastes etc or can be disposed in dedicated food waste disposers (FWDs). Rising energy prices and increasing environmental concerns makes it more important to harness clean energy from food wastes.

Anaerobic Digestion of Food Wastes

Anaerobic Digestion of Food Wastes

Anaerobic digestion is the most important method for the treatment of food waste because of its techno-economic viability and environmental sustainability. The use of anaerobic digestion technology generates biogas and preserves the nutrients which are recycled back to the agricultural land in the form of slurry or solid fertilizer. The relevance of biogas technology lies in the fact that it makes the best possible utilization of food wastes as a renewable source of clean energy.

A biogas plant is a decentralized energy system, which can lead to self-sufficiency in heat and power needs, and at the same time reduces environmental pollution. Thus, the benefits of anaerobic digestion of food waste includes climate change mitigation, economic benefits and landfill diversion opportunities.

Anaerobic digestion has been successfully used in several European and Asian countries to stabilize food wastes, and to provide beneficial end-products. Sweden, Austria, Denmark, Germany and England have led the way in developing new advanced biogas technologies and setting up new projects for conversion of food waste into energy.

food waste treatment

Codigestion at Wastewater Treatment Facilities

Anaerobic digestion of sewage sludge is wastewater treatment facilities is a common practice worldwide. Food waste can be codigested with sewage sludge if there is excess capacity in the anaerobic digesters. An excess capacity at a wastewater treatment facility can occur when urban development is overestimated or when large industries leave the area.

anaerobic_digestion_plant

By incorporating food waste, wastewater treatment facilities can have significant cost savings due to tipping fee for accepting the food waste and increasing energy production. Wastewater treatment plants are usually located in urban areas which make it cost-effective to transport food waste to the facility. This trend is catching up fast and such plants are already in operation in several Western countries.

The main wastewater treatment plant in East Bay Municipal Utility District (EBMUD), Oakland (California) was the first sewage treatment facility in the USA to convert post-consumer food scraps to energy via anaerobic digestion. EBMUD’s wastewater treatment plant has an excess capacity because canneries that previously resided in the Bay Area relocated resulting in the facility receiving less wastewater than estimated when it was constructed. Waste haulers collect post-consumer food waste from local restaurants and markets and take it to EBMUD where the captured methane is used as a renewable source of energy to power the treatment plant. After the digestion process, the leftover material is be composted and used as a natural fertilizer.

The first food waste anaerobic digestion plant in Britain to be built at a sewage treatment plant is the city of Bristol. The plant, located at a Wessex Water sewage works in Avonmouth, process 40,000 tonnes of food waste a year from homes, supermarkets and business across the southwest and generate enough energy to power around 3,000 homes.

Aside from the coprocessing of food waste in wastewater treatment facilities, they can also incorporate greener and more cost-effective agents aiding the wastewater treatment process. For centuries, wastewater companies have utilized caustic soda or sodium hydroxide, a strong alkaline substance, to ionize and increase the pH level of water. This substance is also useful for eliminating heavy metals in water.

Despite the effectiveness of sodium hydroxide in wastewater treatment, corrosion of pipelines is a huge issue in many facilities, as well as the release of copper and lead when water flows into residential plumbing fixtures. However, when the pH of water is increased further, copper and lead contamination can be temporarily resolved, but at the expense of insoluble calcium carbonate build-up along pipe walls.

To present a better solution to this dilemma, wastewater plants can use a sodium hydroxide substitute like magnesium hydroxide which can serve as a greener, safer, and more cost-effective alternative. Compared to caustic soda, magnesium hydroxide offers the following advantages:

  • 40% reduction in chemical usage
  • Safer handling for wastewater facility operators
  • Less hazardous and more nutritive to microorganisms being maintained
  • Reduced sludge volume, thus lowering sludge hauling fees
  • Doesn’t irritate and burn the skin when in contact

A magnesium hydroxide alternative can perform the same advantages as the traditional caustic soda, but with less damages to people and the environment. If you’re looking into using new substitutes like sodium hydroxide in your facility, make sure to consult certified experts like a plant operator, chemical engineer, mechanical engineer, sanitary engineer, and the like.

Things to Consider While Hiring a Waste Management Company

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Whether talking about recycling for a home or business, this type of service is extremely important for the environment. Waste has a negative impact on the environment and can cause pollution of many kinds. Most companies that offer both garbage and recycling services are very organized, and consumers are expected to be equally organized in sorting their waste and separating it from recyclable items.

Because the process of figuring out what can be recycled, many individuals and business owners find it is much easier to simply hire a waste management company.

Below are some questions to consider when looking for recycling services and reasons why hiring a waste management company can take the guesswork out of recycling.

What Kind of Recycling Service is Required?

This can mean anything from home to office to hazardous waste to syringe collection services.  Some companies offer all types of recycling and provide the different skip bins necessary to mitigate these needs. It is important to contact the company and find out as much information that is needed to make an informed decision on how recycling is handled.

However, most companies will only offer a general list of items that can be recycled, including plastics, cardboards, glass, etc. This list will not be exhaustive, leaving many consumers to wonder what to do with items such as plastic bottle caps, milk cartons and the like. A waste management company will know the specific regulations for what can and cannot be recycled, eliminating the hassle for you.

What Can Be Recycled?

Bricks, wood, paper, metals, cardboard, plastics, concrete, and green waste can all be recycled.

  • Bricks – These are broken down and crushed in order to be made into new bricks.
  • Wood – Wood can be used again as a building material or can be processed into pulp or mulch. Recycling wood can limit the number of trees that are being cut down.
  • Paper – The process for this material mixes old paper with chemicals and water to break it down. It is then chopped, heated and broken down further into strands of cellulose.  This substance is then called slurry or pulp and is further recycled into new paper.
  • Metals – Recycling metals will not alter its properties, the most common metals recycled are steel and aluminum.
  • Cardboard – This uses a process that reuses thick sheets of multilayered papers (cardboard) that have been discarded.
  • Plastics – The recycling process for plastics recovers waste or scraps of plastic and reprocesses them into useful products.
  • Concrete – This type of recycling is becoming more common and uses a process of reuse of the rubble for new construction endeavors.
  • Green Waste – This can be anything from leaves to grass trimmings to flower cuttings that can be decomposed and then recycled. This will in turn produce what is called green waste.

There are a number of items that can be recycled, but it is important to note that not all recycling pickup services will be able to process all the items mentioned above. Certain materials, such as concrete or wood, must be disposed of at specific facilities.

plastic-wastes

Recycling has unending benefits

For the average homeowner, this can mean having to locate the specific facility and transport the recyclable materials to them. A waste management company will have the contacts in the industry to know where to take any type of recyclable item and can take care of the transportation for you.

What Recycling Techniques Are Used, and Are They Legal and Ethical?

  • Concretes and Aggregates – This process would involve using a crushing machine and combining the concrete with bricks, asphalt, dirt and rocks. The smaller pieces will be used as gravel, crushed concrete can all be used as dry aggregate, which in turn can be used to make new concrete that will be free of contaminates.
  • Batteries – This type of recycling can be very difficult; all batteries must be sorted into groups of similar kinds and require. Older batteries contain cadmium and mercury, which are very harmful and must be handled very carefully.
  • Biodegradable Waste – This type of waste can be made into reusable material via the process of biological decomposition. The two mechanisms that help this to occur are composting or converting it into soil improver and biogas. The latter uses anaerobic digestion where organic wastes are broken down by microorganisms in a biogas plant.

Again, a waste management company will be able to guarantee that your recycling ends up in the right processing facilities and to ensure that it does get processed according to government regulations and ethical means. When the wrong items end up in recycling, this can lead to an entire batch being thrown out. A waste management company will make sure that the recyclable items are properly sorted, helping to ensure that your efforts to recycle do not go to waste.

What Are the Benefits of Recycling?

There are many benefits to using a recycling service. For instance, recycling conserves energy, reduces greenhouse gases, reduces water and air pollution, and conserves natural resources by reusing recycled materials. Protecting the environment is one of the most important things a home or business can do. When an individual or business chooses to recycle all different kinds of waste, it makes the world a better, less toxic place to live.

Not only does recycling help protect the world, it also reduces the need for extraction such as mining, logging and quarrying. It also reduces the need for processing and refining of raw materials. All these processes can contain harmful, substantial amounts of water and air pollution. Recycling will save this energy while reducing the amount of greenhouse gas, which in turn helps to attack climate change.

Solid Waste Management in India – Role of Policies and Planning

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Out of all the measures that are necessary in addressing India’s waste management crisis, the most efficient will be changes at the national policy and planning level. It is well known among the small but growing waste management sector that urban India will hit rock bottom due to improper waste management.

Solid-Wastes-Management-India

Unfortunately, they think such a crisis is required to bring about policy changes, as they generally tend to happen only after the damage has been done. This attitude is unfortunate because it indicates a lack of or failed effort from the sector to change policy, and also the level of India’s planning and preparedness.

Important Statistics

An average of 32,000 people will be added to urban India every day, continuously, until 2021. This number is a warning, considering how India’s waste management infrastructure went berserk trying to deal with just 25,000 new urban Indians during the last decade. The scale of urbanization in India and around the world is unprecedented with planetary consequences to Earth’s limited material and energy resources, and its natural balance.

Rate of increase in access to sanitation infrastructure generally lags behind the rate of urbanization by 33% around the world; however, the lack of planning and impromptu piecemeal responses to waste management issues observed in India might indicate a much wider gap. This means urban Indians will have to wait longer than an average urban citizen of our world for access to better waste management infrastructure.

The clear trend in the outbreak of epidemic and public protests around India is that they are happening in the biggest cities in their respective regions. Kolkata, Bengaluru, Thiruvananthapuram, and Srinagar are capitals of their respective states, and Coimbatore is the second largest city in Tamil Nadu. However, long term national level plans to improve waste management in India do not exist and guidance offered to urban local bodies is meager.

Apart from the Jawaharlal Nehru National Urban Renewal Mission (JnNURM), there has been no national level effort required to address the problem. Even though JnNURM was phenomenal in stimulating the industry and local governments, it was not enough to address the scale and extent of the problem. This is because of JnNURM is not a long term financing program, sorts of which are required to tackle issues like solid waste management.

Role of Municipal Corporations

In the short term, municipal corporations have their hands tied and will not be able to deliver solutions immediately. They face the task of realizing waste management facilities inside or near cities while none of their citizens want them near their residences. Officials of Hyderabad’s municipal corporation have been conducting interviews with locals for about eight years now for a new landfill site, to no avail.

In spite of the mounting pressure, most corporations will not be able to close the dumpsites that they are currently using. This might not be the good news for which local residents could be waiting, but, it is important that bureaucrats, municipal officials and politicians be clear about it. Residents near Vellalore dump protested and blocked roads leading to the site because Coimbatore municipal officials repeatedly failed to fulfill their promises after every landfill fire incident.

Due to lack of existing alternatives, other than diverting waste fractionally by increasing informal recycling sector’s role, closing existing landfills would mean finding new sites. Finding new landfills in and around cities is nearly impossible because of the track record of dumpsite operations and maintenance in India and the Not in My Backyard (NIMBY) phenomenon.

However, the corporations can and should take measures to reduce landfill fires and open burning, and control pollution due to leachate and odor and vector nuisance. This will provide much needed relief to adjacent communities and give the corporations time to plan better. While navigating through an issue as sensitive this, it is of the utmost importance that they work closely with the community by increasing clarity and transparency.

Municipal officials at the meeting repeatedly stressed the issue of scarcity of land for waste disposal, which led to overflowing dumpsites and waste treatment facilities receiving more waste than what they were designed for. Most municipal officials are of the sense that a magic solution is right around the corner which will turn all of their city’s waste into fuel oil or gas, or into recycled products.

While such conversion is technologically possible with infinite energy and financial sources, that is not the reality. Despite their inability to properly manage wastes, the majority of municipal officials consider waste as “wealth” when approached by private partners. Therefore, a significant portion of officials expect royalty from private investments without sharing business risk.

waste-mountain

The increasing cost of waste disposal is a cause of major concern in developing nations

Good News on the Horizon

While the situation across India is grim and official action has to be demanded through courts or public protests, there are a handful of local governments which are planning ahead and leading the way. The steps taken to solve New Delhi’s waste management problem is laudable. If it was not for the kind of leadership and determination showcased in Delhi, India would not have had its only operating WTE plant. This plant was built in 2011, at a time when the need for waste-to-energy plants was being felt all over India. 1300 tons of Delhi’s waste goes into this facility every day to generate electricity. The successful operation of this facility reinvigorated dormant projects across the nation.

After living with heaps of garbage for months, Thiruvananthapuram Municipal Corporation started penalizing institutions which dump their waste openly. It has also increased the subsidy on the cost of small scale biogas units to 75% and aerobic composting units to 90% to encourage decentralized waste management. The corporation is optimistic with the increase in number of applications for the subsidy from 10 in an entire year to 18 in just a few months after the announcement.

In Bengaluru, improper waste management led to the change of the city’s municipal commissioner. The new commissioner was handed over the job to particularly improve waste management in the city. As a response to the dengue outbreak in Kolkata, the state’s Chief Minister went door to door to create awareness about waste management, and also included the topic in her public speeches. For good or bad, many cities in India have started or initiated steps for banning plastics without performing life cycle analyses.

3 Ways to Effectively Manage Your Medical Waste

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All of the items that are used in healthcare must be disposed of correctly in a way that is environmentally safe and also responsible. This includes syringes, needles, and expired pills.

There are a lot of used syringes, dirty needles, pharmaceutical waste such as expired or contaminated drugs, and even infectious waste such as blood, used dressings, bacterial cultures and wastes from accelerated clinical trials. Of course, all these things pose massive health and contamination risks and if they’re not disposed of properly, they can lead to even bigger health and environmental risks.

healthcare-waste-india

Luckily, we have some information that will undoubtedly help you. Here are three effective ways to manage your medical waste.

1. Correct disposal

Correct disposal means everything when it comes to keeping our environment safe and healthy, which is our priority. Before items are disposed of, they must go through a thorough treatment process to minimise health threats and reduce damage to our environment.

The terms of treatment realistically depend on the facilities, but the most common terms of medical waste treatment are:

  • Steam sterilisation: A great decontamination method that is simple but highly effective. Pressurised steam operates at a high temperature and kills off microorganisms.
  • Mechanical treatment: Grinding/shredding.
  • Chemical treatment: The use of disinfectants.

It is of the utmost importance that all staff are educated on the significance of disposal of medical waste correctly.

2. Develop a plan

Developing a plan could be considered one of the most important things when it comes to the management of medical waste. Every great facility will have an effective and proper plan in place regarding the management of their medical waste. The responsibilities and roles of each member as well as the waste management plan should be laid out as soon as possible with hospitals and will usually be the first thing you learn.

biomedical-waste

It is also of great importance that every staff member understands knows how much waste is generated and to what extent it does or does not fluctuate. It is up to the hospital to effectively teach this to their staff.

3. Introduce reusable items

Surprisingly, one of the worst ways to deal with waste items is to dispose of them. The most effective way to avoid waste is to not produce it in the first place. Understandably, waste is unavoidable in some circumstances, however, where possible it should be avoided.

A big way to make a change is to make the switch to reusable products where it is possible. Opting for greener alternatives could make the biggest difference to the environment and hospitals themselves. It is insanely easy to use reusable items in hospitals and it will be a godsend to the environment should hospitals consider reusable items.

In some cases, hospitals already use reusable products but for the sake of patient safety, some things just simply can’t be reusable. For example, any sharps containers and some specific medical instruments can actually be reusable! They will simply need to be sanitised and disinfected before/after each use and voila!

Before buying a product, it is always a good idea to check if it may be reusable. This will not only save money, but it will also save medical waste.

It is important to take care when disposing of your medical waste, see how to do it here.

How to Improve the Efficiency of Business Waste Management

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When you consider any macro-level activity, every small step counts. The same is true for waste management too. You can reduce the amount of waste reaching the landfill if you can encourage the best practices for your establishment.

The increased amount of waste disposal, mishandling of the waste, or ill-treatment of the discarded waste lead to many complexities for us. The air we breathe in or the water available to drink gets contaminated because of such activities.

California is home to thriving startup culture. There are several offices from Silicon Valley to San Jose. Waste disposal and treatment becomes specifically crucial for such an area. Improper business waste management can not only affect the surface but contaminate the air too.

This article highlights the various ways you can increase the efficiency of business waste management initiatives to cut down such an impact on the environment.

ways you can increase the efficiency of your waste management initiatives

1. Quantifying the Generated Waste

The first step for any waste management activity is assessing the waste. A quick visual waste assessment can help you understand the amount of waste present in the bins before collection.

It is ideal to opt for the various sizes of the bins to address the different quantities of waste generated from your business premises. You can define the system’s efficiency by tracking how often the waste collection bins get full or the collection intervals.

You may have a standard 240 L bin to collect all the waste generated from your office. If you observe that the bins get 75% filled and the collection happens once every week, it translates to your premise generating around 180 L of waste every week.

Once such information is available, you can ideate how much waste your business will produce for a given period.

2. Reduction of Waste Going Out

When you consider the waste management of a particular area, you need to keep track of the local happenings that impact the environment. The latest wildfire in San Jose, California, led to an aggravation of the level of pollutants in the air of the local area.

Being a resident of such a place or having your business premises at such a location needs higher awareness. Checking the air quality in San Jose can be your first step to understanding the prevailing conditions.

You can get an idea of the air quality that you have an office in by checking online, but it is crucial to maintain and keep the pollutant levels low. It often happens that the waste effervesces gases in the atmosphere. You should ensure a reduction of the waste going out of your premises to landfills to curb the escaping gases that it can contribute to later.

For this, you can pursue:

  • Reduction – can you avoid or reduce the waste your business generates by its operation?
  • Reusing – can your waste serve as the input material for another local industry?
  • Recycling – what are the materials that you can keep in the list of recyclables?

3. Identifying a Well-Equipped Local Collector

Once you have a quantity of waste that your business generates in the datasheet and the options to reduce the generated waste, you can identify the ideal local waste collector for your establishment.

waste reduction in businesses

Identifying a suitable recycling and collection contact is crucial for your business. Although, the California startup culture warrants driving the business growth and not indulging in how the waste gets disposed of after collection. You need to identify a well-equipped California collector with a facility to properly ensure measures to treat the waste that you are asking him to collect from your premises.

4. Keeping Efficiency at the Core of Waste Management Contract

When drafting the recycling and waste collection contract with your local vendor, you should delve deeper and understand its key nuances. Do your research to understand what part of the waste that your establishment generates can be recycled.

If the collection happens once a fortnight, you should have proper bins to stop the waste from disturbing the surroundings. You can increase the efficiency of the waste management techniques by writing the effective ways of waste management in the proposal document.

waste-management-sweden

You can also define the key here is where your waste can get disposed of and how you want it to undergo treatment. You should always keep in mind that the recycling contract is legally bound. Therefore, the contract should have well-defined catchment areas putting forth the scope of work of the contractor.

You can review the offers of all the California contractors who meet your criteria. You should look at the condition of the facilities in which your waste will get processed. Although the above is not an exhaustive list, these can increase the waste management contract’s efficiency.

Waste Management Outlook for Nigeria

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Nigeria, the most populous country in Africa with population exceeding 182 million people, is grappling with waste management issues. The country generates around 43.2 million tonnes of waste annually. By 2025 with a population of 233.5 million, Nigeria will be generating an estimated 72.46 million tonnes of waste annually at a projected rate of 0.85 kg of waste/capita/day. This means that Nigeria annual waste generation will almost equal its crude oil production which currently stands at approximately 89.63 million tonnes per year.

waste-nigeria

Also, at an estimated annual waste generation figure of 72.46 million tonnes, Nigeria will be generating about one-fourth of the total waste that will be produced in the whole of Africa. This is scary and if proper attention is not paid to this enormous challenge, Nigeria might become the “Waste Capital of Africa”.

Waste is a Resource for Nigeria

Nonetheless, this challenge can be turned into a blessing because waste is a resource in disguise. If its potential is properly tapped, waste management can create employment, enable power generation, create a waste-based economy and contribute to economic diversification which Nigeria. There is no doubt that this is achievable because we have examples of countries already utilizing their waste judiciously.

Some good examples of sustainable waste management systems that can be implemented in Nigeria includes

  1. Shanghai (China) which turn 50% of the generated waste into power generation electrifying 100,000 homes;
  2. Incheon (South Korea) where its Sudokwon landfill receives about 20,000 tons of waste daily which is converted into electric power, has a water recycling and desalination facility, and has created more than 200 jobs;
  3. Los Angeles (USA) which produces electric power enough for 70,000 homes in its Puente Hills landfill;
  4. Germany whose sophisticated waste processing systems through recycling, composting, and energy generation has already saved the country 20% of the cost of metals and 3% of the cost of energy imports;
  5. Austria, though a small country, is doing big things in waste management especially through recycling;
  6. Sweden, whose recycling is so revolutionary that the country had to import waste; and
  7. Flanders, Belgium which possesses the best waste diversion rate in Europe with 75% of their waste being reused, recycled or composted. An interesting fact is that per capita waste generation rate in Flanders is more than twice that of Nigeria at 1.5 kg/day.

Waste Management Outlook for Nigeria

Below are some of the major things the government need to do to judiciously utilize the free and abundant resource available in the form of trash in Nigeria:

Firstly, attention needs to be paid to building the human resource potential of the country to build the required capacity in conceptualizing fit-for-purpose innovative solution to be deployed in tackling and solving the waste challenge.

While knowledge exchange/transfer through international public private partnership is a possible way in providing waste management solution, it is not sustainable for the country especially because there is already an unemployment problem in Nigeria. Hence, funding the training of interested and passionate individuals and entrepreneurs in waste management is a better way of tackling the waste crisis in Nigeria.

Olusosun is the largest dumpsite in Nigeria

The Federal Government through the Petroleum Trust Development Fund (PTDF) and National Information Technology Development Agency (NITDA) of the Ministry of Communication currently sponsor students to study oil and gas as well as information technology related subjects in foreign countries in the hope of boosting manpower in both sectors of the economy. The same approach should be used in the waste management sector and this can be handled through the Federal Ministry of Environment.

Interestingly, waste generation is almost at par with crude oil production in Nigeria. Therefore, equal attention should be paid to waste-to-wealth sector. Needless to say, this is important as there is no university in Nigeria currently offering waste management as a stand-alone course either at undergraduate or postgraduate level.

The Rationale for National Waste Strategy

Secondly, there is an urgent need for a strong National Waste Management Strategy to checkmate the different types of waste that enters the country’s waste stream as well as the quantity of waste being produced. To develop an effective national waste strategy, a study should be carried out to understand the country’s current stream of waste, generation pattern, and existing management approach. This should be championed by the Federal Ministry of Environment in conjunction with State and Local Government waste management authorities.

Once this is done, each State of the Federation will now integrate their own individual State Waste Management Plan into that of the Federal Government to achieve a holistic waste management development in Nigeria. By so doing, the government would also contribute to climate change mitigation because the methane produced when waste degrades is 25 times more potent than carbon dioxide (a major greenhouse gas known to many and contributor to global warming).

The Need for Financial Incentives

Finally, the government needs to support existing waste management initiatives either through tax-holiday on major equipment that need to be imported for their work and/or on their operation for a certain period of time. Also, if workable, the government can float a grant for innovative ideas and provide liberal subsidies in waste management to jumpstart the growth of the sector.

Lastly, the Government of Nigeria can raise a delegation of experts, entrepreneurs, industry professionals, academia, and youngsters to visit countries with sound waste management strategy for knowledge sharing, capacity-building, technology transfer and first-hand experience.

Note: The unedited version of the article can be found at this link

Pyrolysis of Municipal Wastes

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Pyrolysis is rapidly developing biomass thermal conversion technology and has been garnering much attention worldwide due to its high efficiency and good eco-friendly performance characteristics. Pyrolysis technology provides an opportunity for the conversion of municipal solid wastes, agricultural residues, scrap tires, non-recyclable plastics etc into clean energy. It offers an attractive way of converting urban wastes into products which can be effectively used for the production of heat, electricity and chemicals.

Pyrolysis-MSW

Pyrolysis of Municipal Wastes

Pyrolysis process consists of both simultaneous and successive reactions when carbon-rich organic material is heated in a non-reactive atmosphere. Simply speaking, pyrolysis is the thermal degradation of organic materials in the absence of oxygen. Thermal decomposition of organic components in the waste stream starts at 350°C–550°C and goes up to 700°C–800°C in the absence of air/oxygen.

Pyrolysis of municipal wastes begins with mechanical preparation and separation of glass, metals and inert materials prior to processing the remaining waste in a pyrolysis reactor. The commonly used pyrolysis reactors are rotary kilns, rotary hearth furnaces, and fluidized bed furnaces. The process requires an external heat source to maintain the high temperature required.

Pyrolysis can be performed at relatively small-scale which may help in reducing transport and handling costs.  In pyrolysis of MSW, heat transfer is a critical area as the process is endothermic and sufficient heat transfer surface has to be provided to meet process heat requirements.

The main products obtained from pyrolysis of municipal wastes are a high calorific value gas (synthesis gas or syngas), a biofuel (bio oil or pyrolysis oil) and a solid residue (char). Depending on the final temperature, MSW pyrolysis will yield mainly solid residues at low temperatures, less than 4500C, when the heating rate is quite slow, and mainly gases at high temperatures, greater than 8000C, with rapid heating rates. At an intermediate temperature and under relatively high heating rates, the main product is a liquid fuel popularly known as bio oil.

Wide Range of Products

Bio oil is a dark brown liquid and can be upgraded to either engine fuel or through gasification processes to a syngas and then biodiesel. Pyrolysis oil may also be used as liquid fuel for diesel engines and gas turbines to generate electricity.

Bio oil is particularly attractive for co-firing because it can be relatively easy to handle and burn than solid fuel and is cheaper to transport and store. In addition, bio oil is also a vital source for a wide range of organic compounds and specialty chemicals.

Syngas is a mixture of energy-rich gases (combustible constituents include carbon monoxide, hydrogen, methane and a broad range of other VOCs). The net calorific value (NCV) of syngas is between 10 and 20MJ/Nm3. Syngas is cleaned to remove particulates, hydrocarbons, and soluble matter, and then combusted to generate electricity.

Diesel engines, gas turbines, steam turbines and boilers can be used directly to generate electricity and heat in CHP systems using syngas and pyrolysis oil. Syngas may also be used as a basic chemical in petrochemical and refining industries.

The solid residue from MSW pyrolysis, called char, is a combination of non-combustible materials and carbon. Char is almost pure carbon and can be used in the manufacture of activated carbon filtration media (for water treatment applications) or as an agricultural soil amendment.

The Role of Bioenergy in Waste Minimization

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There is a pressing need more than ever for sustainable, renewable energy sources. In comes the concept of bioenergy – harnessing power from organic matter with multiple benefits including waste reduction. Below, you can explore this further.

role of bioenergy in waste management

Defining Bioenergy

You’re already familiar with sources like solar, wind or hydroelectric power – these are common renewable energy forms that harness natural elements to generate power. There’s one form that has been under attention lately due to its double benefit – it’s called bioenergy.

Bioenergy refers to generating power from biological and organic materials known as biomass or biofuels. These range from plant sources like wood and crops to waste-derived ones like animal manure and sewage.

Types of Bioenergy

The types of bioenergy depend on the source material (biomass) as well as the conversion process used. Take for instance wood- it can be directly burned for heat or processed into pellets that can be combusted more efficiently. Additionally, plants, agricultural residues and their by-products can be converted using various techniques into liquid fuels such as ethanol.

Another source of biomass is organic waste itself which contains a large amount of potential energy when correctly managed.

Importance of Bioenergy

Bioenergy holds an important place in human efforts towards sustainable living because, unlike fossil fuels, it is renewable. Biomass regrows over time so supplying it continuously is possible without depleting the earth’s resources permanently.

Furthermore, if humans maintain a balance in growth and use of biomass, people won’t add extra carbon dioxide to the atmosphere – another huge advantage considering greenhouse gas emissions from fossil fuels. This makes bioenergy a potentially carbon-neutral or even carbon-negative energy source.

landfills-methane-gas

Role of Fast Rubbish Removal

Companies like Same Day Rubbish Removal Ltd play an instrumental role in facilitating waste minimization. This entity specializes in efficient garbage disposal, ensuring the least amount of waste ends up in landfills, which is not only eco-friendly but also a great strategy in resource management.

By sorting out organic wastes suitable for bioenergy production, they make it easier for power plants to convert it into bioenergy without the initial step of waste collection and segregation.

Bioenergy from Household Waste

Your household waste might not seem like much, but collectively it amounts to huge volumes with potential for energy production. Organic kitchen scraps such as vegetable peels, fruit rinds, eggshells and coffee grounds are all high-energy potential biomasses for bioenergy production.

When composted properly, these items provide nutrient-rich biomass that can generate valuable energy.

Processing Organic Waste

The processing of organic or green waste to produce bioenergy involves several steps – depending on the method and desired end-product. Some methods could deal with using heat or thermochemical conversion while other methods may depend on biochemical processes involving organisms or enzymes.

The advantage of these methods lies in the ability to harness the chemical energy stored in the complex organic molecules of wastes, converting them into simpler forms that you can then use as fuel. This essentially turns waste into wealth – a win-win for everyone and for the planet.

Conversion Techniques for Bioenergy

The technique for converting organic waste to bioenergy depends on the material and desired end product and includes thermochemical and biochemical methods. Thermochemical techniques use heat – pyrolysis, gasification and combustion. Biochemical techniques use microbes or enzymes – fermentation, anaerobic digestion and composting.

Dry, woody waste suits thermochemical conversion to yield fuel oils, syngas or heat. Wet waste containing high moisture works better biochemically to produce ethanol, biogas or compost.

Tailoring the conversion process to the waste stream optimizes bioenergy output. This versatility makes organic materials a renewable power source supporting a sustainable future.

Thermochemical Conversion Process

This type of conversion uses heat in the absence or presence of oxygen to break down organic material. The results depend on the process: Combustion completely converts biomass into heat and ash; pyrolysis, which uses no oxygen, produces liquid bio-oil, biogas and bio-char; while gasification breaks down biomass into synthetic gas or ‘syngas’.

These products can then be used directly for energy or further processed into other forms of energy like electricity or transportable fuels.

finding the right membrane cover for biogas projects

Biochemical Conversion Process

Unlike thermochemical processes, biochemical conversions use microbes or enzymes rather than heat. Fermentation employs yeast or bacteria in oxygen-free environments to produce biofuels like ethanol.

Anaerobic digestion also utilizes microorganisms on wet organic material, generating biogas for energy and nutrient-rich fertilizer.

Leveraging natural biological agents, these chemical-free methods unlock energy from biomass sustainably. The renewable end-products power homes, vehicles and industry while nourishing soils, showcasing bioenergy’s versatile potential.

Benefits of Bioenergy Production

Bioenergy generation presents multiple benefits both to you and the environment. As we’ve been highlighting, it’s an exceptional tool in waste reduction but also plays a role in climate change mitigation by providing a cleaner, renewable alternative to burning fossil fuels.

Plus, bioenergy production sparks the local economy by providing jobs, it improves energy security by decreasing dependence on international fossil fuel supplies and supports the agricultural sector via demand for biomass crops.

Limitations and Challenges

While the benefits of bioenergy are plentiful, the sector is still fraught with challenges and limitations. The cost of setting up bioenergy facilities, as well as the complexities of logistics and supply chains for biomass material, slow down adoption rates.

In addition to this, bioenergy also competes for land use with food production leading to ethical considerations about food security.

Solutions to Conversion Challenges

The issues faced in adopting bioenergy are not insurmountable. There are myriad pathways being explored to solve these roadblocks. For instance, using waste biomass such as agricultural or forestry residues instead of dedicated energy crops could alleviate pressure on land use.

Technological innovations are making conversion processes more cost-effective and efficient. Policymakers also have an important role to play in creating conducive environments for investments in bioenergy technology and infrastructure.

Scientific Innovations in Bioenergy

Advancements in biotechnology and genetic engineering hold significant potential for improving bioenergy processes. Scientists are developing genetically modified microorganisms that increase efficiency and output of bioenergy conversion. They are also exploring ways of improving biomass crop yields while minimizing their environmental footprints.

On the utility side, innovations are happening in technology for capturing and converting energy from waste biomass – such as advanced boilers and turbines, and more efficient biofuel vehicles.

Policies Promoting Bioenergy

The development and implementation of favorable policies play a critical role in promoting bioenergy adoption. Certain countries have included bioenergy objectives in their National Renewable Energy Action Plans or similar documents to support the sector’s growth.

Such policies often include targets for renewable energy shares, feed-in tariffs for renewable energy production or fiscal incentives for investments in renewable energy technology. These signals from the government encourage investment and boost the sector’s expansion.

Future Prospects of Bioenergy

Bioenergy’s future shines brightly as global renewable energy commitment strengthens. Rising climate change awareness drives further adoption of sustainable power sources like bioenergy.

The European Union’s aim to source 20% of total energy from renewables by 2020 relied heavily on bioenergy contributions. Ongoing research also continues enhancing bioenergy’s efficiency and sustainability.

With these supportive conditions, bioenergy systems look poised to maximize their clean energy output for years to come. Their renewable nature provides a critical solution for meeting present and future energy needs in an eco-friendly manner.

Eco-Friendly Transition

Bioenergy presents an enticing solution in the pursuit of sustainable living. It introduces an effective way to minimize waste while producing clean, renewable energy at the same time. Despite certain logistical and technological challenges currently faced by the industry, the joint forces of scientific innovation and supportive policy creation are set to propel this vital resource into mainstream use for future generations.

5 Interesting Facts About Waste-to-Energy Projects

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Waste-to-energy (also known as energy-from-waste) is a complicated technology in the realm of renewable energy. There are a lot of hidden truths and myths about this technology that people need to be aware of. Renewable energy technologies, like solar and wind, have much more simple processes and gain most of the attention from media outlets.

On the converse, renewable energy sources that are highly complex like nuclear energy have a bunch of media attention as well.

So, why don’t we discuss a bit more about this relatively unknown technology and asset class? Here I’ll discuss a number of the most important facts about waste-to-energy (abbreviated as WTE).

Interesting Facts About Waste-to-Energy

Let’s get into our facts about waste-to-energy that you need to know.

1. Waste-to-Energy Can Provide Baseload Power

The most familiar renewable energy resources such as wind and solar can only provide power if the sun is shining or the wind is blowing. WTE projects can actually provide baseload power that is used to serve consumers and the grid no matter the time of day or if the sun is shining or not.

Baseload power is essentially when intermittent resources like solar and wind become more prevalent.

2. Not All WTE Projects are Clean and Green

While waste-to-energy projects would seem to be green and clean because they turn trash into power or gas. However, some projects require long hauling of trash to bring to the actual incineration facility. This actually ends up require much more emissions from the trash haulers than alternatives.

One solution to this would be to help promote the use of electric vehicles and electric vehicle technology to be installed in trucking, like waste hauling.

3. WTE Projects Can Reduce Use of Landfills

Landfills have increased at an exponential pace the in last 100 years. Waste-to-energy projects are an awesome alternative to landfills as the trash is used to provide electricity or fuel.

WTE projects reduce waste volumes by approximately 90%, which results in fewer landfills that are needed to process ash. This ends up protecting our natural resources and land in a dramatic fashion.

5. WTE Projects have Multiple Revenue Streams

Waste-to-energy projects are extremely complicated and expensive to build. Most of the investor economic interest is driven by financial incentives, renewable identification numbers, tax credits, etc. to help these projects get financed.

Beyond these other financial incentives, some of the waste-to-energy projects produce a byproduct, named biochar, which has multiple applications and fetches good prices. The biochar can usually end up providing the most value in the revenue stream or investability of the project itself.

In addition to other economic streams, waste-to-energy projects usually require high tipping fees. A tipping fee is what the trash hauler has to pay in order to dump the trash at the facility. With WTE projects, the tipping fee can end up being 50-60% of the overall revenue stack.

5. WTE Facilities are Net Greenhouse Gas Reducers

Methane has more than 20 times the potency of carbon dioxide and is ranked as a very dangerous contributor to climate change and warming of our planet. WTE facilities avoid the productions of methane and end up producing up to 10 times more the electricity than landfill gas projects. If you didn’t know, landfills can actually end up producing electricity by capture the methane gas and compressing it into a consumable natural gas for power.

Sysav–WTE-plant-Sweden

Sweden is one of the best proponents of waste-to-energy in the world

WTE projects will usually have much more capacity than any landfill gas projects.

Conclusions

You can’t use waste-to-energy projects at your home similar to solar or even wind to get free electricity. However, knowing about projects in your area and the relevant suppliers will help you understand whether or not the technology is a perfect fit for your community. If you see a project coming online in your surrounding area, you should know how to ask the right questions.

At the end of the day, WTE projects are green and clean. They just need to have the right systems in place to make them more efficient and less risky to appeal new investor appetite. What fact was your favorite about waste-to-energy?

Do you know much about waste-to-energy projects? Let us know in the comments below. We’d love to hear from you.