Life-cycle assessment of solid waste management in Dhulikhel Municipality, Nepal
- 1 September 2022
- journal article
- research article
- Published by Thomas Telford Ltd. in Journal of Environmental Engineering and Science
- Vol. 17 (3), 147-154
- https://doi.org/10.1680/jenes.21.00045
Abstract
Solid Waste Management (SWM) is becoming a major environmental and public health concern in emerging municipalities in Nepal. In this study, the life cycle assessment (LCA) approach is used to address the environmental impacts of potential waste treatment scenarios in Dhulikhel Municipality in Nepal. The assessment was based on four different scenarios, viz. Scenario 1- landfilling, Scenario 2 - composting combined with landfilling, Scenario 3 - recycling, composting and landfilling, and Scenario 4 - recycling, anaerobic digestion, and landfilling. The LCA methodology was developed, including the benefits and impact potentials of different unit process in each scenario, also taking consideration of emissions from energy use. The environmental impacts from the scenarios were compared in terms of Global Warming Potential (GWP), Acidification Potential (AP), and Eutrophication Potential (EP). Among the four scenarios, scenario 4 (i.e. with anaerobic digestion) showed the most environmental advantage. Scenarios without biological treatment facilities are the least preferred option as their impact is significantly greater than other options. Therefore, organic waste is recommended not to be disposed of in landfill sites even if the transportation activity increases, because the magnitude of methane avoidance increases with an increased amount of waste diversion to the biological treatment units.Keywords
This publication has 15 references indexed in Scilit:
- A global prospective of income distribution and its effect on life cycle assessment of municipal solid waste management: a reviewEnvironmental Science and Pollution Research, 2017
- Life-cycle assessment of municipal solid waste managementProceedings of the Institution of Civil Engineers - Waste and Resource Management, 2016
- Life Cycle Assessment of Municipal Solid Waste Management System in Kathmandu, NepalJournal of Advanced College of Engineering and Management, 2016
- Life cycle assessment of fertilizers: a reviewInternational Agrophysics, 2014
- Energy recovery potential and life cycle impact assessment of municipal solid waste management technologies in Asian countries using ELP modelInternational Journal of Energy and Environmental Engineering, 2012
- Composting and compost utilization: accounting of greenhouse gases and global warming contributionsWaste Management & Research: The Journal for a Sustainable Circular Economy, 2009
- Anaerobic digestion and digestate use: accounting of greenhouse gases and global warming contributionWaste Management & Research: The Journal for a Sustainable Circular Economy, 2009
- Life cycle assessment of solid waste management options for Eskisehir, TurkeyWaste Management, 2009
- Life Cycle Assessment: A Tool for Evaluating and Comparing Different Treatment Options for Plastic Wastes from Old Television SetsData Science Journal, 2007
- Rural and Developing Country SolutionsPublished by Elsevier BV ,2005