Scholarlink

<p>Global population, economic, and industrial growth developed at the fastest pace, causing many environmental and sustainability problems. This created more municipal solid waste problems in urban areas. India generates 62 million tonnes of waste annually, with only a small percentage properly treated. The rise in waste generation, projected to reach 165 million tonnes by 2030, poses environmental challenges and requires sustainable waste management practices. Using Life Cycle Assessment (LCA) to assess the environmental impacts of the two main treatment methods—open composting and in-vessel composting —this study examines MSW management in Kundrathur, Chennai, India. The functional unit of the study was selected as 1 tonne of municipal solid waste (MSW) received at the Kundrathur Municipal Solid Waste Management (MSWM) facility. All results were modeled for 90&#xa0;kg, which can be scaled up to 1 tonne for comparison with other studies. The system boundary was defined as gate-to-gate, including segregation of collected wastes, grinding, addition of microbial inoculants or green mix powder, composting, and direct process emissions. In order to speed up composting, the widely used open composting method grinds organic waste and adds effluent microorganisms. Despite being economical, it has a higher potential for acidification (3.105&#xa0;kg SO<sub>2</sub> eq), carbon monoxide emissions (0.457&#xa0;kg), global warming (47.481&#xa0;kg CO<sub>2</sub> eq), and ecotoxicity (26.248E-4&#xa0;kg 1,4-DCB). In contrast, in-vessel composting offers a more controlled process in which organic waste is placed in closed vessels with green mix powder, reducing emissions across most categories. This includes global warming of 33.053&#xa0;kg CO₂ eq, carbon monoxide of 0.341&#xa0;kg, acidification potential of 3.348&#xa0;kg SO₂ eq, and ecotoxicity of 22.004E − 4&#xa0;kg 1,4-DCB. Overall, the in-vessel composting approach shows a more environmentally sustainable solution with slightly higher eutrophication (0.42&#xa0;kg PM 2.5&#xa0;eq) and human toxicity (41.7E-3&#xa0;kg 1,4-DCB). This demonstrates how in-vessel composting can help achieve sustainable development goals by lowering the environmental impact of solid waste management in quickly urbanising areas.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Life Cycle-Based Evaluation of Open and In-vessel Composting Strategies for Organic Waste Management in India

  • 期刊论文

  • 发表日期：

    2026年7月23日

查看全文
  • Hariharasudhan Chandrasekaran,
  • Ellappa Subramani Suresh,
  • Pachaivannan Partheeban

摘要

Global population, economic, and industrial growth developed at the fastest pace, causing many environmental and sustainability problems. This created more municipal solid waste problems in urban areas. India generates 62 million tonnes of waste annually, with only a small percentage properly treated. The rise in waste generation, projected to reach 165 million tonnes by 2030, poses environmental challenges and requires sustainable waste management practices. Using Life Cycle Assessment (LCA) to assess the environmental impacts of the two main treatment methods—open composting and in-vessel composting —this study examines MSW management in Kundrathur, Chennai, India. The functional unit of the study was selected as 1 tonne of municipal solid waste (MSW) received at the Kundrathur Municipal Solid Waste Management (MSWM) facility. All results were modeled for 90 kg, which can be scaled up to 1 tonne for comparison with other studies. The system boundary was defined as gate-to-gate, including segregation of collected wastes, grinding, addition of microbial inoculants or green mix powder, composting, and direct process emissions. In order to speed up composting, the widely used open composting method grinds organic waste and adds effluent microorganisms. Despite being economical, it has a higher potential for acidification (3.105 kg SO2 eq), carbon monoxide emissions (0.457 kg), global warming (47.481 kg CO2 eq), and ecotoxicity (26.248E-4 kg 1,4-DCB). In contrast, in-vessel composting offers a more controlled process in which organic waste is placed in closed vessels with green mix powder, reducing emissions across most categories. This includes global warming of 33.053 kg CO₂ eq, carbon monoxide of 0.341 kg, acidification potential of 3.348 kg SO₂ eq, and ecotoxicity of 22.004E − 4 kg 1,4-DCB. Overall, the in-vessel composting approach shows a more environmentally sustainable solution with slightly higher eutrophication (0.42 kg PM 2.5 eq) and human toxicity (41.7E-3 kg 1,4-DCB). This demonstrates how in-vessel composting can help achieve sustainable development goals by lowering the environmental impact of solid waste management in quickly urbanising areas.

Graphical abstract