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Sustainable Food Waste Management for Climate Action in Asia

Learn about integrated food waste management strategies in developing Asian countries to mitigate climate change. Explore practical examples, technologies, and initiatives promoting resource efficiency and greenhouse gas reductions. Discover the importance of waste separation, composting, anaerobic digestion, and biogas utilization for sustainable development.

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Sustainable Food Waste Management for Climate Action in Asia

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  1. Integrated Waste Management and Resource Efficiency Integrated Food Waste Management for Climate Change Mitigation in Developing Asian Countries Janya SANG-ARUN, Researcher Magnus BENGTSSON, Senior Policy Researcher Taib SHAZWIN, Intern

  2. Introduction to IGES • IGES is an NPO based in Japan (5 branch offices) • Working on policy-research and providing services and facilitating policy development to Ministries in Japan (esp. Ministry of Environment) and Governments in Asia and the Pacific. • 7 Divisions: Waste and Resources Management, Natural Resource Management (Forest, Fresh Water, Biodiversity), Climate Policy, Climate Market Mechanism, Environmental Education, Economic Analysis, and Program Management Office. • Download publications: www.iges.or.jp

  3. Presentation outline • Potential GHG emissions and reductions from food waste • Food waste management hierarchy based on 3Rs • Example of food waste management in Cambodia, Thailand and India • Conclusion

  4. Waste composition in developing Asia countries *Compile from various sources ** toxic link, 2002

  5. Potential GHG emissions through landfill of food waste

  6. Potential GHG emissions reduction through waste reduction, composting, and anaerobic digestion

  7. Preferable food waste management technology • Low GHG emissions • Efficient resource recovery • Low energy input • Low monetary investment • Low environmental impact • Simple and easy to handle

  8. Integrated food waste management hierarchy Reduce Reuse Recycle Recovery

  9. Urban Composting in Phnom Penh, Cambodia • Waste generation is 1,200 ton/day • 30 ton/day of waste from food market is composting by a NGO (COMPED)

  10. Compost price is 75 USD/ton of compost • GHG emissions reduction is around 1.7 tCO2eq/day

  11. Urban Composting in Bangkok, Thailand • Waste generation : 8,500 tons/day • Composting: 1,000 tons/day of waste • Compost price: 63 USD/ton • GHG emissions reduction: 659 tCO2eq/day

  12. Household composting in Bangkok (pilot scale)

  13. Anaerobic digestion in Rayong, Thailand • Waste generation: 60 tons/day • Capacity of the plant: 60 tons/day • Actual operation: 25-30 tons/day • Use of biogas: Generating electricity  sell to national grid • GHG emissions reduction: 26 tCO2eq/day

  14. Anaerobic digestion in Kerala, India • Initiated by BIOTECH India (Trivandrum, Kochi, etc) • 35% of investment cost is subsidized • 16,000 household with waste input of 3 kg/day • 220 community’s digesters • 25 schools with capacity of 50 kg of waste per day • 45 plants with capacity of 250 kg of waste per day is generating electricity from biogas produced • 30-50% saving LPG use for cooking • Short term economic return

  15. Biogas plant at a school in Trivandrum • Plant capacity: 100 kgs of waste input • Current waste input: 25-30 kgs + 20 l kitchen wastewater • Energy saving: 35% • Effluent: use as liquid fertilizer in school • Plan to collect food waste from other organization

  16. Biogas plant at YWCA (dormitory) in Trivandrum • Capacity: 25 kgs of waste input • Waste input: 25 kgs waste + 75 kitchen wastewater • Effluent: discharge to wastewater canal • Energy saving: not yet obvious

  17. Biogas plant at a fish market in Trivandrum • Capacity: 250 kgs waste input/day • Use of biogas: Generating electricity (5kW) for lighting the market and community road

  18. Household biogas project in Trivandrum • Waste input 3 kg/day • Size: 1 m3 • Biogas use: cooking • Effluent: use for gardening • Saving 50% of LPG for cooking

  19. Mechanical Biological Pre-Treatment (MBT) • Implement in Phitsanulok, Thailand since 1999 • Could reduce GHG emissions and extend lifetime of landfill • Plastic waste is segregated before dumping into landfill

  20. Conclusion • Food waste contributes large amount of GHG emissions from the waste sector of developing Asian countries. • The government should promote use of food waste as a resource (e.g. animal feed, biogas, and composting) in household or community scale. • To increase efficiency of food waste utilization, food waste separation at source is required. • Not all of food waste can be separated, MBT should be applied for mixed waste.

  21. IGES future work on food waste and climate change • Supporting local governments by developing an implementation guideline and decision tool for promoting use of organic waste in Laos, Cambodia and Thailand. • Providing training workshop to local governments in Laos, Cambodia and Thailand. • Study on multiple benefits of organic waste management. • Biomass town for resource efficiency and climate change mitigation in developing Asian countries.

  22. Acknowledgement • Financial supporters: • Ministry of Environment, Japan (MOEJ) • Asia-Pacific Network for Global Change Research (APN) • CCDC2010 Organizers

  23. Thank You

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