Methane Gas Emission and its Management Practices from Solid Waste Stream, Case Study: Addis Ababa and its Surrounding Oromia Special Zone Towns

摘要

Waste disposal is one of the major contributors of greenhouse gas emissions worldwide, especially methane emission which was the largest contributor to global warming. This study aimed at assessing methane emission from solid waste disposal sites for the last five years (2013-2017), activities to reduce the emission level, and the existing legal instrument applied to reduce emission from the sector. An Intergovernmental Panel on Climate Change IPCC 2006 national greenhouse gas emission inventory model tire 2 with some default emission factor and country specific data was used to quantify emission. Identified result prevailed that the disposal sites of the study area emitted 4,848,147 tCO2e methane for the last five years. The emission of methane showed a dramatic increase from 427,739 tCO2e emission in 2013 to 1,510,191 tCO2e in 2017. The activities that were applied to capture and utilize, and to reduce the emission was very poor. Similarly, the policies and proclamations of the country didn't give attention to emission reduction. Application of 3R strategy, reduction of disposing solid waste and revision of the existing legal instrument is necessary to reduce and control the emission.