Southeast Asia, with its abundant bioenergy resources, holds a strategic position in the global biomass energy atlas. There is immense bioenergy potential in Southeast Asian countries due to plentiful supply of diverse forms of biomass wastes such as agricultural residues, woody biomass, animal wastes, municipal solid waste, etc. The rapid economic growth and industrialization in the region has accelerated the drive to implement the latest waste-to-energy technologies to tap the unharnessed potential of biomass resources.
Southeast Asia is a big producer of agricultural and wood products which, when processed in industries, produces large amounts of biomass residues. According to conservative estimates, the amount of biomass residues generated from sugar, rice and palm oil mills is more than 200-230 million tons per year which corresponds to cogeneration potential of 16-19 GW.
Rice mills in the region produce 38 million tonnes of rice husk as solid residue which is a good fuel for producing heat and power. Sugar industry is an integral part of the industrial scenario in Southeast Asia accounting for 7% of sugar production worldwide. Sugar mills in Thailand, Indonesia, Philippines and Vietnam generate 34 million tonnes of bagasse every year. Malaysia, Indonesia and Thailand account for 90% of global palm oil production leading to the generation of 27 million tonnes of waste per annum in the form of empty fruit bunches (EFBs), fibers and shells, as well as liquid effluent.
Woody biomass is a good energy resource due to presence of large number of forests in Southeast Asia. Apart from natural forests, non-industrial plantations of different types (e.g. coconut, rubber and oil palm plantations, fruit orchards, and trees in homesteads and gardens) have gained recognition as important sources of biomass. In addition, the presence of a large number of wood processing industries also generates significant quantity of wood wastes. The annual production of wood wastes in the region is estimated to be more than 30 million m3.
The prospects of biogas power generation are also high in the region thanks to presence of well-established food-processing and dairy industries. Another important biomass resource is contributed by municipal solid wastes in heavily populated urban areas. In addition, there are increasing efforts both commercially and promoted by governments to develop biomass energy systems for efficient biofuel production, e.g. bio-diesel from palm oil.
Biomass resources, particularly residues from forests, wood processing, agricultural crops and agro-processing, are under-utilised in Southeast Asian countries. There is an urgent need to utilize biomass wastes for commercial electricity and heat production to cater to the needs of the industries as well as urban and rural communities.
Southeast Asian countries are yet to make optimum use of the additional power generation potential from biomass waste resources which could help them to partially overcome the long-term problem of energy supply. Technologies for biomass utilization which are at present widely used in Southeast counties need to be improved towards best practice by making use of the latest trends in the biomass energy sector.
The Philippines has abundant supplies of biomass energy resources in the form of agricultural crop residues, forest residues, animal wastes, agro-industrial wastes, municipal solid wastes and aquatic biomass. The most common agricultural wastes are rice hull, bagasse, cane trash, coconut shell/husk and coconut coir. The use of crop residues as biofuels is increasing in the Philippines as fossil fuel prices continue to rise. Rice hull is perhaps the most important, underdeveloped biomass resource that could be fully utilized in a sustainable manner.
At present, biomass technologies utilized in the country vary from the use of bagasse as boiler fuel for cogeneration, rice/coconut husks dryers for crop drying, biomass gasifiers for mechanical and electrical applications, fuelwood and agricultural wastes for oven, kiln, furnace and cook-stoves for cooking and heating purposes. Biomass technologies represent the largest installations in the Philippines in comparison with the other renewable energy, energy efficiency and greenhouse gas abatement technologies.
Biomass energy plays a vital role in the nation’s energy supply. Nearly 30 percent of the energy for the 80 million people living in the Philippines comes from biomass, mainly used for household cooking by the rural poor. Biomass energy application accounts for around 15 percent of the primary energy use in the Philippines. The resources available in the Philippines can generate biomass projects with a potential capacity of more than 200 MW.
Almost 73 percent of this biomass use is traced to the cooking needs of the residential sector while industrial and commercial applications accounts for the rest. 92 percent of the biomass industrial use is traced to boiler fuel applications for power and steam generation followed by commercial applications like drying, ceramic processing and metal production. Commercial baking and cooking applications account for 1.3 percent of its use.
The EC-ASEAN COGEN Programme estimated that the volume of residues from rice, coconut, palm oil, sugar and wood industries is 16 million tons per year. Bagasse, coconut husks and shell can account for at least 12 percent of total national energy supply. The World Bank-Energy Sector Management Assistance Program estimated that residues from sugar, rice and coconut could produce 90 MW, 40 MW, and 20 MW, respectively.
The development of crop trash recovery systems, improvement of agro-forestry systems, introduction of latest energy conversion technologies and development of biomass supply chain can play a major role in biomass energy development in the Philippines. The Philippines is among the most vulnerable nations to climatic instability and experiences some of the largest crop losses due to unexpected climatic events. The country has strong self-interest in the advancement of clean energy technologies, and has the potential to become a role model for other developing nations on account of its broad portfolio of biomass energy resources and its potential to assist in rural development.
The Philippines is mainly an agricultural country with a land area of 30 million hectares, 47 percent of which is agricultural. The total area devoted to agricultural crops is 13 million hectares distributed among food grains, food crops and non-food crops.Among the crops grown, rice, coconut and sugarcane are major contributors to biomass energy resources.
The most common agricultural wastes in the Philippines are rice husk, rice straw, coconut husk, coconut shell and bagasse. The country has good potential for biomass power plants as one-third of the country’s agricultural land produces rice, and consequently large volumes of rice straw and hulls are generated.
Rice is the staple food in the Philippines. The Filipinos are among the world’s biggest rice consumers. The average Filipino consumes about 100 kilograms per year of rice. Though rice is produced throughout the country, the Central Luzon and Cagayan Valley are the major rice growing regions. With more than 1.2 million hectares of rain-fed rice-producing areas, the country produced around 16 million tons of rice in 2007. The estimated production of rice hull in the Philippines is more than 2 million tons per annum which is equivalent to approximately 5 million BOE (barrels of oil equivalent) in terms of energy. Rice straw is another important biomass resource with potential availability exceeding 5 million tons per year across the country.
With the passing of Biofuels Act of 2006, the sugar industry in the Philippines which is the major source of ethanol and domestic sugar will become a major thriving industry. Around 380,000 hectares of land is devoted to sugarcane cultivation. It is estimated that 1.17 million tonnes of sugarcane trash is recoverable as a biomass resource in the Philippines. In addition, 6.4 million tonnes of surplus bagasse is available from sugar mills. There are 29 operating sugar mills in the country with an average capacity of 6,900 tonnes of cane per day. Majority is located in Negros Island which provides about 46% of the country’s annual sugar production.
The Philippines has the largest number of coconut trees in the world as it produces most of the world market for coconut oil and copra meal. The major coconut wastes include coconut shell, coconut husks and coconut coir dust. Coconut shell is the most widely utilized but the reported utilization rate is very low. Approximately 500 million coconut trees in the Philippines produce tremendous amounts of biomass as husk (4.1 million tonnes), shell (1.8 million tonnes), and frond (4.5 million tonnes annually).
Maize is a major crop in the Philippines that generates large amounts of agricultural residues. It is estimated that 4 million tonnes of grain maize and 0.96 million tonnes of maize cobs produced yearly in the Philippines. Maize cob burning is the main energy application of the crop, and is widely practiced by small farmers to supplement fuelwood for cooking.
I recently took a 5-month break from my work as an environmental consultant to volunteer with Marine Conservation Philippines (MCP) on the issue of marine litter. During the first few months of my stint there, we undertook an intense programme of beach cleans across sections of a small sample of local beaches. The idea was to find out what kinds of material were most prevalent, to inform the types of local initiative we could set up to try and tackle the issues. Consistently, the vast majority of the debris we found strewn across the beaches was plastic; a significant amount of that was soft plastics which can’t be recycled – plastic bags, sweet and crisp packets, and single use soap and detergent sachets. There were some variations, though: at one beach, we kept picking up a staggering amount of styrofoam.
During our beach clean work and engagement with local communities, it became increasingly apparent that part of the problem was the variability of waste management across the municipality of Zamboanguita, in the Negros Oriental province of the Philippines. Despite national legislation, some areas received no formal waste collections at all. With the help of the local Coastal Resources Manager, Tony Yocor, we began to engage with the local municipality’s Solid Waste Manager with the view to supporting appropriate an affordable waste management practices.
We focused on solutions that have been successful elsewhere in the Philippines and in other emerging markets, such as the local collection and waste sorting approach developed by Mother Earth Foundation. Unfortunately, as with most places in the world, influencing the authorities to act takes time, and whilst we started to make some progress, Tony and the staff at MCP are still working on trying to get the full range of local solutions we identified implemented.
Materials and markets
We did, however, build our own ‘MRF’ (more of a community recycling centre in UK terms) at MCP’s base to improve the management of the waste we collected. The main aim of the site is to allow as many recyclable materials as possible to be segregated so that they can be sold to the local junk shops. We also hope that this can act as a demonstration site for the types of simple solutions that can be set up locally to improve waste management.
But ultimately, if we are serious about tackling this issue of marine debris, we have to reduce the amount of litter we produce, and many countries are making progress on tackling commonly littered items. Restrictions on single use carrier bags are amongst the most prominent and widespread anti-littering measures around the world.
England’s 5p carrier bag levy was introduced in 2015 and, despite its limitations, is reducing bag usage and (it would seem) marine litter. Last year Kenya hit the headlines when it joined the growing list of countries adopting a rather stricter line: it banned plastic carrier bags entirely, with offenders risking heavy fines or even imprisonment.
Although bans and restrictions are becoming increasingly widespread, they have not yet reached the Philippines at a national level and it seems no coincidence that a large proportion of the items we found littered on our sample beaches around Zamboanguita were plastic bags. One beach, close to where the largest ‘ghetto’ market is held weekly, had a particularly high incidence of plastic bag litter, and the quantity increased noticeably on, and just after, market day. Use wholesale tote bags to promote sustainable living in the Philippines.
Without national instruments in place, we explored what could be done with the policy powers available to the local government. Working with the local Markets Officer and Coastal Resources Manager we put the wheels in motion to propose and implement a local ordinance to introduce a charge on plastic bags, initially at the market as a trial, with the potential for a wider roll-out if successful. It’s a model that could be reapplied elsewhere in the Philippines if national legislation isn’t forthcoming.
Sachet and sea?
Plastic bags are a challenge, but because they’re distributed locally it’s relatively easy to change practices. Other forms of single use packaging contribute just as much to the litter problem afflicting many South East Asian counties, but are harder to tackle because their source is more remote.
The Philippines, like many developing and emerging economies, is a ‘sachet economy’, with a huge range of products sold in one-portion, single-use sachets. You see them everywhere, from small ‘sari sari’ stalls to large shopping centres. The producers’ perspective is that this form of packaging represents a form of social responsibility, allowing them to provide safe, long-lasting, affordable products that meet people’s needs. However, they have a wider cost.
Sachet society: one of the most common forms of litter in the Philippines. Photo courtesy of Amy Slack.
I was involved in Break Free from Plastic Negros Oriental’s December beach clean and audit, and these sachets were the most common item we found. They accounted for a massive 25% of the items picked up from Dumaguete beach, beating plastic bags into second place (13%). The waste management system in the Philippines simply isn’t geared up to dealing with this increasingly popular type of packaging – the composite materials of which they are made are impractical to recycle and so lack the economic value that engages the interest of the informal sector. So, what could be done to help?
The Best Foot Forward
There is no ‘silver bullet’ to instantly lay marine litter to rest. Even if there was a global ban on single use plastics today, it would take time for already littered material to blow or wash its way through the system. However, introducing a compulsory extended producer responsibility (EPR) mechanism into policy could help end the blame game that currently impedes action: producers blame the general public for littering, the general public blame the government for inadequate waste systems, and government blames produces for manufacturing plastic packaging.
An EPR scheme would see government giving clear responsibilities to business, and ensuring that producers fund collection and reprocessing schemes to properly manage the waste from the products they sell in the Philippines. That would in turn incentivise producers to use more easily recyclable packaging, as the costs of managing this material would be lower. The goal need not be to try to ape the waste management systems of the West, which may not be suitable in the circumstances. And in the Philippines, where labour is cheap and informal waste management thrives, it may take little more than giving a small value to packaging products to greatly reduce the amount of material that escapes into the environment.
Although countries like the Philippines currently struggle most to cope with the consequences of plastic packaging waste, with the right set of policies and determined volunteers to help organise local action, there is scope for them to catch up and overhaul the West in developing solutions that really do reduce litter.
Note: The article has been republished with the permission of our collaborative partner Isonomia. The original version of the article can be found at this link
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