Food processing industry around the world is making serious efforts to minimize by-products, compost organic waste, recycle processing and packaging materials, and save energy and water. The three R’s of waste management – Reduce, Reuse and Recycle – can help food manufacturers in reducing the amount of waste sent to landfill and reusing waste.
EPA’s Food Recovery Hierarchy
EPA’s Food Recovery Hierarchy is an excellent resource to follow for food processors and beverage producers as it provides the guidance to start a program that will provide the most benefits for the environment, society and the food manufacturer.
Notably, landfill is the least favored disposal option for waste generated in food and beverage producers worldwide. There are sustainable, effective and profitable waste management options including:
recycling/reusing waste for utilization by other industries,
feeding surplus food to needy people
Waste Management Options
Food manufacturers has a unique problem – excess product usually has a relatively short shelf life while most of the waste is organic in nature. Food waste created during the production process can be turned into animal feed and sold to goat farms, chicken farms etc. As far as WWTP sludge is concerned, top food manufacturers are recycling/reusing it through land application, anaerobic digestion and composting alternatives.
Organic waste at any food processing plant can be composted in a modern in-vessel composting and the resultant fertilizer can be used for in-house landscaping or sold as organic fertilizer as attractive prices.
Another plausible way of managing organic waste at the food manufacturing plant is to biologically degrade it in an anaerobic digester leading to the formation of energy-rich biogas and digestate. Biogas can be used as a heating fuel in the plant itself or converted into electricity by using a CHP unit while digestate can be used as a soil conditioner. Biogas can also be converted into biomethane or bio-CNG for its use as vehicle fuel.
Items such as cardboard, clean plastic, metal and paper are all commodities that can be sold to recyclers Lots of cardboard boxes are used by food manufacturers for supplies which can be broken down into flat pieces and sold to recyclers.
Cardboard boxes can also be reused to temporarily store chip packages before putting them into retail distribution boxes. Packaging can be separated in-house and recovered using “jet shredder” waste technologies which separate film, carton and foodstuffs, all of which can then be recycled separately.
Organizing a Zero-Landfill Program
How do you develop a plan to create a zero-landfill or zero waste program in food and beverage producing company? The best way to begin is to start at a small-level and doing what you can. Perfect those programs and set goals each year to improve. Creation of a core team is an essential step in order to explore different ways to reduce waste, energy and utilities.
Measuring different waste streams and setting a benchmark is the initial step in the zero-landfill program. Once the data has been collected, we should break these numbers down into categories, according to the EPA’s Food Recovery Challenge and identify the potential opportunities.
For example, inorganic materials can be categorized based on their end lives (reuse, recycle or landfill). The food and beverage industry should perform a waste sort exercise (or dumpster dive) to identify its key streams.
Nestlé USA – A Case Study
In April 2015, Nestlé USA announced all 23 of its facilities were landfill free. As part of its sustainability effort, Nestlé USA is continually looking for new ways to reuse, recycle and recover energy, such as composting, recycling, energy production and the provision of safe products for animal feed, when disposing of manufacturing by-products.
Employees also work to minimize by-products and engage in recycling programs and partnerships with credible waste vendors that dispose of manufacturing by-products in line with Nestlé’s environmental sustainability guidelines and standards. All Nestlé facilities employ ISO 14001-certified environmental management systems to minimize their environmental impact.
Solid waste management is one of the major environmental problems threatening the Kingdom of Morocco. More than 5 million tons of solid waste is generated across the country with annual waste generation growth rate touching 3 percent. The proper disposal of municipal solid waste in Morocco is exemplified by major deficiencies such as lack of proper infrastructure and suitable funding in areas outside of major cities.
According to the World Bank, it was reported that before a recent reform in 2008 “only 70 percent of urban wastes was collected and less than 10 percent of collected waste was being disposed of in an environmentally and socially acceptable manner. There were 300 uncontrolled dumpsites, and about 3,500 waste-pickers, of which 10 percent were children, were living on and around these open dumpsites.”
It is not uncommon to see trash burning as a means of solid waste disposal in Morocco. Currently, the municipal waste stream is disposed of in a reckless and unsustainable manner which has major effects on public health and the environment. The lack of waste management infrastructure leads to burning of trash as a form of inexpensive waste disposal. Unfortunately, the major health effects of burning trash are either widely unknown or grossly under-estimated to the vast majority of the population in Morocco.
The good news about the future of Morocco’s MSW management is that the World Bank has allocated $271.3 million to the Moroccan government to develop a municipal waste management plan. The plan’s details include restoring around 80 landfill sites, improving trash pickup services, and increasing recycling by 20%, all by the year 2020. While this reform is expected to do wonders for the urban population one can only hope the benefits of this reform trickle down to the 43% of the Moroccan population living in rural areas, like those who are living in my village.
Needless to say, even with Morocco’s movement toward a safer and more environmentally friendly MSW management system there is still an enormous population of people including children and the elderly who this reform will overlook. Until more is done, including funding initiatives and an increase in education, these people will continue to be exposed to hazardous living conditions because of unsuitable funding, infrastructure and education.
For a society accustomed to the achievements of a linear economy, the transition to a circular economic system is a hard task even to contemplate. Although the changes needed may seem daunting, it is important to remember that we have already come a long way. However, the history of the waste hierarchy has taught that political perseverance and unity of approach are essential to achieving long term visions in supply chain management.
Looking back, it is helpful to view the significance of the Lansink’s Ladder in the light of the sustainability gains it has already instigated. From the outset, the Ladder encountered criticism, in part because the intuitive preference order it expresses is not (and has never been put forward as) scientifically rigorous. Opposition came from those who feared the hierarchy would impede economic growth and clash with an increasingly consumerist society. The business community expressed concerns about regulatory burdens and the cost of implementing change.
However, such criticism was not able to shake political support, either in Holland where the Ladder was adopted in the Dutch Environmental Protection Act of 1979, or subsequently across Europe, as the Waste Hierarchy was transposed into national legislation as a result of the revised Waste Framework Directive.
Prevention, reuse and recycling have become widely used words as awareness has increased that our industrial societies will eventually suffer a shortage of raw materials and energy. So, should we see the waste hierarchy as laying the first slabs of the long road to a circular economy? Or is the circular economy a radical new departure?
Positive and negative thinking
There have been two major transitionary periods in waste management: public health was the primary driver for the first, from roughly 1900 to 1960, in which waste removal was formalised as a means to avoid disease. The second gained momentum in the 1980s, when prevention, reuse and recovery came on the agenda. However, consolidation of the second transition has in turn revealed new drivers for a third. Although analysing drivers is always tricky – requiring a thorough study of causes and effects – a general indication is helpful for further discussion. Positive (+) and negative (-) drivers for a third transition may be:
(+) The development of material supply chain management through the combination of waste hierarchy thinking with cradle to cradle eco design;
(+) The need for sustainable energy solutions;
(+) Scarcity of raw materials necessary for technological innovation; and
(+) Progressive development of circular economy models, with increasing awareness of social, financial and economic barriers.
(-) Growth of the global economy, especially in China and India, and later in Africa;
(-) Continued growth in global travel;
(-) Rising energy demand, exceeding what can be produced from renewable energy sources and threatening further global warming;
(-) Biodiversity loss, causing a further ecological impoverishment; and
(-) Conservation of the principle of ownership, which hinders the development of the so-called ‘lease society’.
A clear steer
As the direction, scale and weight of these drivers are difficult to assess, it’s necessary to steer developments at all levels to a sustainable solution. The second transition taught that governmental control appears indispensable, and that regulation stimulates innovation so long as adequate space is left for industry and producers to develop their own means of satisfying their legislated responsibilities.
The European Waste Framework Directive has been one such stimulatory piece of legislation. Unfortunately, the EC has decided to withdraw its Circular Economy package, which would otherwise now be on track to deliver the additional innovation needed to achieve its goals – including higher recycling targets. Messrs. Juncker and Timmermans must now either bring forward the more ambitious legislation they have hinted at, or explain why they have abandoned the serious proposals of their predecessors.
Perhaps the major differences between Member States and other countries may require a preliminary two-speed policy, but any differences in timetable between Western Europe and other countries should not stand in the way of innovation, and differences of opinion between the European Parliament and the Commission must be removed for Europe to remain credible.
Governmental control requires clear rules and definitions, and for legislative terminology to be commensurate with policy objectives. One failing in this area is the use of the generic term ‘recovery’ to cover product reuse, recycling and incineration with energy recovery, which confuses the hierarchy’s preference order. The granting of R1 status to waste incineration plants, although understandable in terms of energy diversification, turns waste processors into energy producers benefiting from full ovens. Feeding these plants reduces the scope for recycling (e.g. plastics) and increases CO2 emissions. When relatively inefficient incinerators still appear to qualify for R1 status, it offers confusing policy signals for governments, investors and waste services providers alike.
The key role for government also is to set clear targets and create the space for producers and consumers to generate workable solutions. The waste hierarchy’s preference order is best served by transparent minimum standards, grouped around product reuse, material recycling or disposal by combustion. For designated product or material categories, multiple minimum standards are possible following preparation of the initial waste streams, which can be tightened as technological developments allow.
Where the rubber meets the road
As waste markets increase in scale, are liberalised, and come under international regulation, individual governmental control is diminished. These factors are currently playing out in the erratic prices of secondary commodities and the development of excess incinerator capacity in some nations that has brought about a rise in RDF exports from the UK and Italy. Governments, however, may make a virtue of the necessity of avoiding the minutiae: ecological policy is by definition long-term and requires a stable line; day to day control is an impossible and undesirable task.
The road to the third transition – towards a circular economy – requires a new mind-set from government that acknowledges and empowers individuals. Not only must we approach the issue from the bottom-up, but also from the side and above. Consumer behaviour must be steered by both ‘soft’ and ‘hard’ controls: through information and communication, because of the importance of psychological factors; but also through financial instruments, because both consumers and industry are clearly responsive to such stimuli.
Where we see opposition to deposit return schemes, it comes not from consumers but from industry, which fears the administrative and logistical burden. The business community must be convinced of the economic opportunities of innovation. Material supply chain management is a challenge for designers and producers, who nevertheless appreciate the benefits of product lifetime extensions and reuse. When attention to environmental risks seems to lapse – for example due to financial pressures or market failures – then politics must intervene.
Government and industry should therefore get a better grip on the under-developed positive drivers of the third transition, such as eco design, secondary materials policy, sustainable energy policy, and research and development in the areas of bio, info, and nanotechnologies.
Third time’s the charm
Good supply chain management stands or falls with the way in which producers and consumers contribute to the policies supported by government and society. In order that producers and consumers make good on this responsibility, government must first support their environmental awareness.
The interpretation of municipal duty of care determines options for waste collection, disposal and processing. Also essential is the way in which producer responsibility takes shape, and the government must provide a clear separation of private and public duties. Businesses may be liable for the negative aspects of unbridled growth and irresponsible actions. It is also important for optimal interaction with the European legislators: a worthy entry in Brussels is valuable because of the international aspects of the third transition. Finally, supply chain management involves the use of various policy tools, including:
Rewarding good behaviour
Sharpening minimum standards
Development and certification of CO2 tools
Formulation and implementation of end-of-waste criteria
Remediation of waste incineration with low energy efficiency
Restoration or maintenance of a fair landfill tax
Application of the combustion load set at zero
‘Seeing is believing’ is the motto of followers of the Apostle Thomas, who is chiefly remembered for his propensity for doubt. The call for visible examples is heard ever louder as more questions are raised around the feasibility of product renewal and the possibilities of a circular economy.
Ultimately, the third transition is inevitable as we face a future of scarcity of raw materials and energy. However, while the direction is clear, the tools to be employed and the speed of change remain uncertain. Disasters are unnecessary to allow the realisation of vital changes; huge leaps forward are possible so long as government – both national and international – and society rigorously follow the preference order of the waste hierarchy. Climbing Lansink’s Ladder remains vital to attaining a perspective from which we might judge the ways in which to make a circle of our linear economy.
Note: The article is being republished with the permission of our collaborative partner Isonomia. The original article can be found at this link.
Peshawar is among the biggest cities in Pakistan with estimated population of 4 million inhabitants. Like most of the cities in Pakistan, solid waste management is a big challenge in Peshawar as the city generate 600-700 tons of municipal waste every day, with per capita generation of about 0.3 to 0.4 kg per day. Major part of the Peshawar population belongs to low and middle income area and based upon this fact, waste generation rate per capita varies in different parts of the city.
Municipal solid waste collection and disposal services in the city are poor as approximately 60 per cent of the solid wastes remain at collection points, or in streets, where it emits a host of pollutants into the air, making it unacceptable for breathing. A significant fraction of the waste is dumped in an old kiln depression around the southern side of the city where scavengers, mainly comprising young children, manually sort out recyclable materials such as iron, paper, plastics, old clothes etc.
Peshawar has 4 towns and 84 union councils (UCs). Solid waste management is one of their functions. Now city government has planned to build a Refuse Derived Fuel (RDF), Composting Plant and possibly a Waste to Energy Power Plant which would be a land mark of Peshawar city administration.
The UCs are responsible for door to door collection of domestic waste and a common shifting practice with the help of hand carts to a central pick-up points in the jurisdiction of each UC. Town Council is responsible for collection and transporting the mixed solid waste to the specified dumps which ends up at unspecified depressions, agricultural land and roadside dumps.
Open dumping of municipal wastes is widely practiced in Peshawar
Presently, there are two sites namely Hazar Khwani and Lundi Akhune Ahmed which are being used for the purpose of open dumping. Waste scavenging is a major activity of thousands of people in the city. An alarming and dangerous practice is the burning of the solid waste in open dumps by scavengers to obtain recyclables like glass and metals.
Almost 50 percent of recyclables are scavenged at transfer stations from the waste reaching at such points. The recyclable ratio that remains in the house varies and cannot be recovered by the authorities unless it is bought directly from the households. Only the part of recyclables reaching a certain bin or secondary transfer station can be exploited.
In some areas of city where waste is transported by private companies from transfer points to the disposal site out study found that scavengers could only get about 35% of the recyclables from the waste at transfer station. Considering the above fact, it can be inferred that in case municipality introduces efficient waste transfer system in the city, the amount of recyclables reaching the disposal facility may increase by 30% of the current amount. In case house-to-house collection is introduced the municipality will be able to take hold of 90% of the recyclables in the waste stream being generated from a household.
Every single one of us can do something to improve our impact on the planet, but it is a given that businesses of all sizes have a bigger footprint than families – commercial accounts for 12% of total greenhouse gas emissions. A big factor of that is waste management. From the physical process of picking up garbage, to the methane-released process of decomposition, there are numerous factors that add up to create a large carbon footprint.
Between hiring green focused waste management solutions and recycling in a diligent fashion, there are a few technologies that are helping to break down the barrier between commercial waste management and an environmentally positive working environment.
Cleaning up commercial kitchens
A key form of commercial waste is food waste. Between the home and restaurant, it is estimated by the US Department of Agriculture that 133 billion pounds of food is wasted every year. Much will end up in the landfill. How is technology helping to tackle this huge source of environmental waste? Restaurants themselves are benefiting from lower priced and higher quality commercial kitchen cooking equipment, that helps to raise standards and reduce wastage.
Culinary appliances for varied cuisines also benefit from a new process being developed at the Netherland’s Wageningen University. A major driver of food waste is rejected wholesale delivery, much of which will be disposed of in landfill. The technology being developed in Holland aims to reduce wastage by analyzing food at the source, closer to where recycling will be achievable.
Have you ever received a parcel from an online retailer only to find the box greatly outsizes the contents? On the face of it, this is damaging to the environment. However, many retailers use complex box sorting algorithms. The result is that the best route is chosen on balance, considering the gas needed to make the journey, the amount of stock that can be delivered and the shortest route for the driver. This is an area of intense technological innovation.
The National Waste & Recycling Association reported in 2017 on how 2018 would see further advances, particularly with the integration of artificial intelligence and augmented reality into the route-finding process.
Balancing the landfill carbon footprint
It is well established that landfills are now being used to power wind turbines, geothermal style electricity and so on. They are being improved to minimize the leachate into groundwater systems and to prevent methane escaping into the atmosphere. However, further investigation is being pushed into the possibility of using landfill as a carbon sequester.
AI-based waste management systems can help in route optimization and waste disposal
Penn State University, Lawrence Berkeley and Texas University recently joined together to secure a $2.5m grant into looking into the function of carbon, post-sequestration. This will help to shed light on the carbon footprint and create a solid foundation on which future technology can thrive.
Businesses of all sizes have an impact on the carbon footprint of the world. The various processes that go into making a business profitable and have a positive impact on their local and wider communities need to be addressed. As with many walks of life, technology is helping to bridge the gap.
Waste management is highly context specific. Therefore it is important to distinguish between the conditions in the Global North and the Global South. Recent ILO figures suggest that 24 million people around the world are involved in the informal waste recycling sector, 80% of whom are waste pickers. Some estimates say that 1% of urban population in developing countries makes their primary household income through informal sector waste management activities. In Latin America alone, 4-5 million waste pickers earn their livelihood by being a part of the global recyclables supply chain.
Municipal budgets in the Global South are often limited and only a small percentage of that budget is assigned to waste management as compared to other municipal services. In the Global North waste management is recognized as a necessary public good and there is a greater willingness to pay for this service. Solid waste management (e.g. waste collection, transportation and recycling) is generally more labour intensive than in North America and Europe.
Urbanization in the Global South is often haphazard and unplanned; creating pockets of high and low income neighbourhoods. This creates logistical issues for the waste management service provision limiting options for viable waste collection and transportation. It is often the informal sector that steps in to fill this service gap.
The maturity and strength of the legal framework differs between the Global South and Global North. In North America and Europe the legal framework of waste management actively promotes and provides incentives for waste reduction, reuse and recovery whereas, despite recent developments in some countries, in Latin America legal frameworks remain focused upon mixed waste collection, transportation and disposal.
Recycling rates in Argentina are at 11% of the total waste stream with 95% of this material is recovered by the informal sector. This situation is replicated in many other countries. The informal sector recovers between 50% (e.g. Mexico) and 90% (e.g. Nicaragua) of the waste recovered and in the different countries of the region. Resource recovery and recycling is driven by market conditions. Materials that have a value are diverted from landfill through an informal network of recyclers and waste collectors.
The composition of waste is also very different in the Global South where organic waste is a much larger percentage of the waste stream. Because of the high percentage of organics in the waste stream in many cities in the Global South, innovations in decentralised composting and small scale biogas have been seen across the Global South (particularly in India) and can be used effectively by the informal sector, making a zero waste future a real possibility.
Role of Informal Recycling Sector
The informal sector can be highly effective at collecting and diverting garbage from landfill. When empowered with a facilitating legal framework, and collectively organized, the informal sector can be a key part of a sustainable resource recovery system. Using people power to increase recycling and diversion rates decreases the need for expensive, fixed, high technology solutions.
Understanding that the context for waste management is different between the Global North and Global South, and even in different areas within a city or region, means that no two situations will be the same. However, if there is one principle to follow it may well be to consider the context and look for the simplest solution. The greenest cities of the future may well be those that use flexible, adaptable solutions and maximize the work that the informal sector is already doing.
Note: This excerpt is being published with the permission of our collaborative partner Be Waste Wise. The original excerpt and its video recording can be found at this link
With population of approximately 1.75 million, waste management is one of the most serious challenges confronting the local authorities. The daily solid waste generation across Gaza is more than 1300 tons which is characterized by per capita waste generation of 0.35 to 1.0 kg. Scarcity of waste disposal sites coupled with huge increase in waste generation is leading to serious environmental and human health impacts on the population.
The severity of the crisis is a direct consequence of continuing blockade by Israeli Occupation Forces and lack of financial assistance from international donor. Israeli Occupation Forces deliberately destroyed most of the sewage infrastructure in the Gaza Strip, during 2008-2009 Gaza War inflicting heavy damage to sewage pipes, water tanks, wastewater treatment plants etc.
There are three landfills in Gaza Strip – one each in southern and central part of Gaza and one in Gaza governorate. In addition, there are numerous unregulated dumpsites scattered across rural and urban areas which are not fenced, lined or monitored. Around 52% of the MSW stream is made up of organic wastes.
Domestic, industrial and medical wastes are often dumped near cities and villages or burned and disposed of in unregulated disposal sites which cause soil, air and water pollution, leading to health hazards and ecological damage. The physical damage caused to Gaza’s infrastructure by repeated Israeli aggression has been a major deterred in putting forward a workable solid waste management strategy in the Strip.
The sewage disposal problem is assuming alarming proportions. The Gaza Strip’s sewage service networks cover most areas, except for Khan Yunis and its eastern villages where only 40% of the governorate is covered. There are only three sewage water treatment stations in Gaza Strip – in Beit Lahia, Gaza city and Rafah – which are unable to cope with the increasing population growth rate. The total quantity of produced sewage water is estimated at 45 million m3 per annum, in addition to 3000 cubic meters of raw sewage water discharged from Gaza Strip directly into the sea every day. Sewage water discharge points are concentrated on the beaches of Gaza city, Al Shate’ refugee camp and Deir El Balah.
The continuous discharge of highly contaminated sewage water from Gaza Strip in the Mediterranean shores is causing considerable damage to marine life in the area. The beaches of Gaza City are highly polluted by raw sewage. In addition, groundwater composition in Gaza Strip is marked by high salinity and nitrate content which may be attributed to unregulated disposal of solid and liquid wastes from domestic, industrial and agricultural sources. The prevalent waste management scenario demands immediate intervention of international donors, environmental agencies and regional governments in order to prevent the situation from assuming catastrophic proportions.
Waste management is one of the most serious environmental challenges faced by the tiny Gulf nation of Qatar. mainly on account of high population growth rate, urbanization, industrial growth and economic expansion. The country has one of the highest per capita waste generation rates worldwide of 1.8 kg per day. Qatar produces more than 2.5 million tons of municipal solid waste each year. Solid waste stream is mainly comprised of organic materials (around 60 percent) while the rest of the waste steam is made up of recyclables like glass, paper, metals and plastics.
Municipalities are responsible for solid waste collection in Qatar both directly, using their own logistics, and indirectly through private sector contract. Waste collection and transport is carried out by a large fleet of trucks that collect MSW from thousands of collection points scattered across the country.
The predominant method of solid waste disposal is landfilling. The collected is discharged at various transfer stations from where it is sent to the landfill. There are three landfills in Qatar; Umm Al-Afai for bulky and domestic waste, Rawda Rashed for construction and demolition waste, and Al-Krana for sewage wastes. However, the method of waste disposal by landfill is not a practical solution for a country like Qatar where land availability is limited.
Solid Waste Management Strategy
According to Qatar National Development Strategy 2011-2016, the country will adopt a multi-faceted strategy to contain the levels of waste generated by households, commercial sites and industry – and to promote recycling initiatives. Qatar intends to adopt integrated waste hierarchy of prevention, reduction, reuse, recycling, energy recovery, and as a last option, landfill disposal.
A comprehensive solid waste management plan is being implemented which will coordinate responsibilities, activities and planning for managing wastes from households, industry and commercial establishments, and construction industry. The target is to recycle 38 percent of solid waste, up from the current 8 percent, and reduce domestic per capita waste generation.
Five waste transfer stations have been setup in South Doha, West Doha, Industrial Area, Dukhan and Al-Khor to reduce the quantity of waste going to Umm Al-Afai landfill. These transfer stations are equipped with material recovery facility for separating recyclables such as glass, paper, aluminium and plastic.
Domestic Solid Waste Management Centre
One of the most promising developments has been the creation of Domestic Solid Waste Management Centre (DSWMC) at Mesaieed. This centre is designed to maximize recovery of resources and energy from waste by installing state-of-the-art technologies for separation, pre-processing, mechanical and organic recycling, and waste-to-energy and composting technologies. At its full capacity, it will treat 1550 tons of waste per day, and is expected to generate enough power for in-house requirements, and supply a surplus of 34.4 MW to the national grid.
While commendable steps are being undertaken to handle solid waste, the Government should also strive to enforce strict waste management legislation and create mass awareness about 4Rs of waste management viz. Reduce, Reuse, Recycle and Recovery. Legislations are necessary to ensure compliance, failure of which will attract a penalty with spot checks by the Government body entrusted with its implementation.
Improvement in curbside collection mechanism and establishment of material recovery facilities and recycling centres may also encourage public participation in waste management initiatives. When the Qatar National Development Strategy 2011-2016 was conceived, the solid waste management facility plant at Mesaieed was a laudable solution, but its capacity has been overwhelmed by the time the project was completed. Qatar needs a handful of such centers to tackle the burgeoning garbage disposal problem.
Waste management is one of the core themes of sustainability, but achieving sustainable waste management is a challenging and complex task. Despite the fact that an increasing amount of waste has been reused and recycled, landfills still play an important role in the management of wastes. However, waste degradation in landfill produce leachate and harmful gasses viz. carbon dioxide, methane which are considered as greenhouse gases. It has been studied that leachate contribute to 20% emission of greenhouse gases. This can largely risk human health as well as threat to environment. Furthermore, it contains low concentration of gases with heavy aromatic rings, most of them are toxic in nature.
The increasing cost of waste disposal is a cause of major concern in developing nations
Movements of leachate create problem as aquifers need more time for rehabilitation. Leachate can migrate to groundwater or surface water and have potential threat to drinking water. Constructing landfills have adverse effects on aquaculture and habitats by diffusing leachate into surface/groundwater with limited on-site recycling activities. Various studies also claim that residential areas close to landfill areas have low housing values because people don’t prefer to live close to the area enriched with flies, mosquitoes, bacteria and bad odours.
Scavengers often collect in a mixed state with all type of wastes, which include reusable materials, plastic, glass bottles etc. which reduces the calorific value and combustibility of waste. Waste is usually sorted out manually and unfortunately it becomes very difficult to regulate and implement an efficient method. This kind of waste recovery methods is very common in Asian countries e.g. India, Indonesia etc. using improper waste management technique can cause contaminated soil, water and environment.
Water is most easy to contaminate as it dissolves chemicals easily, causing harm to all living organisms including humans. Animal and marine life is most effected with water contamination. It also restricts our use of water for drinking and cooking purposes without cleaning system. The environment is highly harmed because of improper waste management.
Greenhouse gases are generated from decomposition of waste, these gasses are major cause of global warming affecting air precipitation, causing acid rain to severe hailstorms. Moreover humans who live near to garbage dumping area are found to be most significant to risk of health diseases, skin problems, cancer etc.
Olusosun is the largest dumpsite in Nigeria
With proper awareness and teaching methods of efficient waste management we can achieve sustainable solution to waste management. It has been forecasted by Environmental Sanitary Protection Plan that, by 2020 Kamikatsu a city in Japan is going to be 100% free from waste. Although the target of reaching the 100% waste is going to be achieved but the standby waste issue is going to be major hurdle as Kamikatsu have only 34% of land space available.
The lack of availability of standby space for waste is going to be major problem in future because of shortage of space, degraded quality of waste with lower calorific value and formation of leachate. And unfortunately, this issue is not going to be solved very soon.
If you’re interested in green and environmental issues you may have heard the phrase ‘life-cycle assessment’ in relation to a particular product. It can be difficult to ascertain exactly what this life-cycle assessment involves – so we’re hoping to shed some light on the process, the different types of assessment that take place and explain what’s involved with each step.
A look at the bigger picture
Essentially, a product life-cycle assessment takes an overall view of that item’s impact on the environment – and in doing so, offers a true picture of how green that product really is. The aim is for consumers, manufacturers and policy makers to be given a true environmental picture of any product.
Although it’s an example that divides the opinion of environmentalists around the world, the Toyota Prius provides an interesting picture of why the product life-cycle assessment is required in a world driven by a company’s desire to be seen as green. The Prius is an electric-hybrid car which Toyota claims delivers an impressive 60 miles per gallon of fuel – a statistic that puts it as a firm environmental favourite.
However, there are claims that the construction methods used to create the batteries that power the Prius are hugely detrimental to the environment – with some sources saying the manufacturing plant impacts the environment so greatly that by the time a Prius is driven from the showroom – it’s already had the environmental impact it would take any other car 1,000 gallons of fuel to match.
What’s the verdict?
So, is the Prius good or bad? That’s not for us to decide – and we’re not suggesting one way or another, we’re simply using this as an illustration of how complex any environmental consideration can be in a product with such an intensive manufacturing process and prolonged lifespan. At the other end of the calculation you’d have to consider how long the Prius will run for – and whether that balances a supposedly negative building method.
Ingredients of product life-cycle assessment
The assessment is ordinarily broken down into different stages:
Extraction and processing of raw materials
This is a full understanding of the journey from source to point of manufacture that the building blocks of any product take. For example, in the manufacture of a table you would begin by looking at the trees that provide the wood, the logging process that takes them from forest to timber yard and the impact of the machinery used throughout that process.
You would repeat this process for every raw material that goes into the table’s manufacture.
Next comes the manufacturing itself – if machinery or any industrial process is used to piece our table together then resources used in that process must be considered when we look at the overall impact of the product on the environment.
The packaging that a product is delivered in is effectively another product in itself. Although unlikely in our table example, it’s not uncommon for extravagant packaging to represent 10-20% of a product’s recommended retail price. Curtis Packaging, an award-winning UK based sustainable packaging company suggest manufacturers pay careful consideration to the impact of packaging on a product’s overall green credentials – from raw materials to the point of disposal, the packing that adorns your product can have serious environmental considerations.
At first glance you could be forgiven for thinking marketing a product comes with no environmental impact – but you’d be wrong. From the printing of advertising materials – to the sales team’s 20,000 annual miles in company vehicles – there can be a lot of resource put into any marketing process. However, measurement is no mean feat – companies can find it difficult to differentiate between their overall carbon footprint and that associated with any one product.
Product use, re-use and maintenance
This is where the impact of a product moves from the manufacturer and into the hands of the consumer. What does typical use look like? How long is a product being used for? Does one person’s use vary compared to another’s? For our example table, the answers could be fairly simple – on the other hand, there’s a huge amount of variation when you look at a broad range of car drivers.
Packaging that adorns your product can have serious environmental impact.
For any product that requires maintenance, the LCA just became much more complex (again!) – just as packaging represented an entirely separate product that requires its own assessment – a similar process is required when a car receives a tank of fuel, a top up of coolant, brake fluid, spark plugs, brake pads… hopefully you get the picture (hint – it’s complex and sprawling!)
However difficult it might be to anticipate, it’s an environmental imperative that big industry is aware of the impact they have – even when their product has left their hands.
Recycling, disposal and waste at the end of the product’s life
From pizza boxes to old cars, it’s easy to think of their job as being done when they’re waved off to a recycling bin or breaker’s yard – but environmentally this could just be the beginning of their impact.
In terms of recycling – the effort and impact of the process must be outweighed by the benefit of the salvaged material, it’s often in life-cycle assessments that decisions are made around what is worth recycling – and what should be destined for landfill. If landfill is the ultimate resting place for any product, what does the deterioration process look like and what does that mean to the environment in the short, medium and long-term?
Then, to bring the assessment cycle full circle – any product that can be processed and re-used re-enters the assessment cycle back at the extraction and processing of raw materials stage…
Ultimately, what is the life-cycle assessment done for?
There’s no one reason that a life-cycle assessment is done. For some companies, they’re keen to explain the full back-story of the product. For others, it can be an exercise in understanding the full process and highlighting any areas that can be financially streamlined – it certainly provides a solid baseline from which improvements can be made.
For the most environmentally ethical companies, the life-cycle assessment gives a true picture of the impact they have on the well-being of the planet – and offers a chance to get a full and honest picture of the moves they and their partners can make in creating a product that fulfils the requirements of the environment – as well as those of the customer and shareholders.
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