Abstract
The greenhouse gas emissions of the waste incineration sector account for approximately 43% of the total GHG emissions and represent the majority of the CO2 emissions from waste in Korea. Improving the reliability of the GHG inventory of the waste incineration sector is an important aspect for the examination of global GHG emission management according to the Paris Agreement. In this study, we introduced a statistical approach to analyze seasonal changes through analysis of waste composition and CO2 concentration in Municipal Solid Waste incinerators and applied the methodology to one case study facility. The analysis results in the case study showed that there was no seasonal variation in waste composition and CO2 concentrations, except for wood. Wood is classified as biomass, and the GHG emissions caused by biomass incineration are reported separately, indicating that the effect of an MSW incinerator on GHG emissions is not significant. Therefore, the seasonal effect of CO2 concentration or waste composition may not be an impact when calculating GHG emissions from case study facilities’ MSW incinerators. This study proposed an approach for analyzing factors that affect the GHG inventory reliability by analyzing seasonal characteristics and variation through the statistical analysis, which are used for the calculation of the GHG emissions of an MSW incinerator.
Highlights
Waste can be treated using various methods
In the calculation of CO2 emissions based on waste composition, the amount of waste incineration is multiplied by the waste composition ratio, dry matter content, carbon content, and fossil carbon content to calculate the emissions
The dry matter content, carbon content, and fossil carbon content must be applied according to the waste composition, so the waste composition ratio can be seen as an important factor in the calculation of CO2 emissions based on the waste composition
Summary
Waste can be treated using various methods. In Korea, waste treatment methods include recycling, landfilling, and incineration. The amount of waste treated in Korea was 404,812 tons/day in 2018 [1]. Recycling represented the highest proportion with 83.9% (319,579 tons/day), followed by landfilling 9.4% (35,604 tons/day), incineration 6.0% (22,918 tons/day), and sea dumping 0.7% (2608 tons/day) [1]. Among them, landfilling and incineration are the waste treatment methods related to greenhouse gas (GHG) emissions. Since 2013, the GHG emissions from landfills have been slowly decreasing, while those from incineration have remained constant. The importance of the waste incineration sector is increasing in terms of GHG inventory management
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