Environmental Impact Evaluation of Current Municipal Solid Waste Treatments in India Using Life Cycle Assessment
| Autor: | Brajesh Dubey, Wahidul K. Biswas, Michele John, Venkata Ravi Sankar Cheela |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
anaerobic digestion
Technology Control and Optimization Municipal solid waste 020209 energy Energy Engineering and Power Technology 02 engineering and technology 010501 environmental sciences 01 natural sciences life cycle assessment 0202 electrical engineering electronic engineering information engineering Environmental impact assessment Electrical and Electronic Engineering Engineering (miscellaneous) Life-cycle assessment 0105 earth and related environmental sciences EASETECH Waste management Renewable Energy Sustainability and the Environment landfill municipal solid waste global warming potential incineration Incineration Anaerobic digestion Food waste Environmental science Ecotoxicity Eutrophication Energy (miscellaneous) |
| Zdroj: | Energies, Vol 14, Iss 3133, p 3133 (2021) Energies; Volume 14; Issue 11; Pages: 3133 |
| ISSN: | 1996-1073 |
| Popis: | An environmental life cycle assessment was conducted to compare proposed municipal solid waste treatment systems with the existing system in Visakhapatnam, India. Five waste alternative treatment systems, including open dumping of municipal solid waste (S1), landfill without gas recovery [LFWGR] (S2), landfill with gas recovery (S3), anaerobic digestion + LFWGR (S4), and incineration + LFWGR (S5). EASETECHTM was considered for assessment using ReCiPE Midpoint (Heuristic) world environmental impact assessment method. Global warming potential (GWP), terrestrial acidification (TA), freshwater eutrophication (FEW), marine water eutrophication (ME), human toxicity (HTP), terrestrial ecotoxicity (TE), freshwater ecotoxicity (FWT), and marine ecotoxicity (MET) impacts were determined for each option. The existing MSW disposal practice in Visakhapatnam city (baseline scenario, S1) has the highest GWP (1107 kg CO2 eq.), which can potentially be reduced to 68.2%, 81.5%, 98.2%, and 94.5% by alternative waste management scenarios S2, S3, S4 and S5, respectively. Scenario S4, involving the use of anaerobic digestion of food waste and residues dumped in engineered landfill without energy recovery was found to be the option with the highest mitigation potential of most of the impacts, and it contributes to significant environmental benefits in terms of ecological footprints in a low-income country such as India. Sensitivity analysis was conducted to confirm the reasonable legitimacy of data used for the determination of the impacts. |
| Databáze: | OpenAIRE |
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