MODELING GREENHOUSE GAS EMISSIONS MITIGATION SCENARIOS FOR MUNICIPAL SOLID WASTE DISPOSAL: TROAS, ÇANAKKALE EXAMPLE

Date

2023-12-15

Author

Şahin, Ahmet Ayberk

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Management of solid waste disposal sites requires comprehensive environmental impact strategies. Because disposal sites cause groundwater, soil contamination, and air pollution due to fugitive leachate and emissions. It causes high amounts of greenhouse gas (GHG) emissions, especially CH4 emissions. Emissions released at every stage of the waste disposal process constitute at least 3% of GHG emissions over the earth. Therefore, effective solid waste management strategies should directly be implemented to target GHG emission reduction. The waste management hierarchy covering collection, treatment and disposal, which includes careful consideration of all components of the solid waste disposal system, needs to be adapted to these strategies. This study aims to present disposal methods that can reduce GHG emissions from municipal solid waste (MSW) for a settlement by determining the optimum waste management scenario. Scenario-based waste management cases were simulated with an Excel-based macros. A model has been prepared with reference to Intergovernmental Panel on Climate Change (IPCC) based emission calculation guidelines. Waste disposal scenarios progressing from the simplest to the most complex management system are integrated into the model. The designed scenarios implicate combined disposal methods of recycling, landfilling with methane recovery, incineration with different reactor types, composting and anaerobic digestion. When the MSW disposal emission calculation model was run using the quantities and distribution of waste types obtained from the pilot region as a reference, it was concluded that much less GHG was emitted than the current waste management of the region. It is estimated as a result of calculations that 1397.89 Gg of CO2 eq GHG will be released from unmanaged wild dumpsites over the next 20 years. In a regular landfill site where methane recovery is possible, this value can be reduced to the range of 870.322-505.03 Gg CO2 eq GHG. If recycling and incineration systems are implemented in an integrated manner, GHG will be emitted in the range of 587.43-502.02 Gg CO2 eq. If biological treatment methods are integrated with organic waste recovery in facilities into these systems, emissions will be reduced to 416.54-186.01 Gg CO2 eq GHG. The results show that the MSW management model, based on the objectives of minimizing greenhouse gas emissions resulting from disposal and ensuring maximum material recovery, has achieved its goal. The scenarios and calculations will be a reference work for decision-makers on reviving waste sites, improving existing disposal methods and introducing environmentally sustainable management habits. It has been proven that GHG emissions from the waste sector can be reduced to the lowest levels with apropriate modelling.

Subject Keywords

Solid waste management, Disposal, Recycle, Recovery, GHG emissions, Emission mitigation, Modeling

URI

https://hdl.handle.net/11511/107777

Collections

Graduate School of Natural and Applied Sciences, Thesis