# 생활폐기물의 재활용과 에너지화에 따른 온실가스 감축량 산정

• Kwon, Yuree (Department of Environmental Engineering, Chungnam National University) ;
• Chang, Yoon (Department of Environmental Engineering, Chungnam National University) ;
• Jang, Yong-Chul (Department of Environmental Engineering, Chungnam National University)
• 권유리 (충남대학교 환경공학과) ;
• 장윤 (충남대학교 환경공학과) ;
• 장용철 (충남대학교 환경공학과)
• Accepted : 2018.08.07
• Published : 2018.09.30

#### Abstract

This study examined the potentials for greenhouse gas reduction by material recovery and energy recovery from municipal solid waste between 2017 and 2026 in Daejeon Metropolitan City (DMC), which is trying to establish a material-cycle society by constructing a waste-to-energy town by 2018. The town consists of energy recovery facilities such as a mechanical treatment facility for fluff-type solid refuse fuel (SRF) with a power generation plant and anaerobic digestion of food waste for biogas recovery. Such recycling and waste-to-energy facilities will not only reduce GHGs, but will also substitute raw materials for energy consumption. The emissions and reduction rate of GHGs from MSW management options were calculated by the IPCC guideline and EU Prognos method. This study found that in DMC, the decrease of the amount of MSW landfilled and the increase of recycling and waste-to-energy flow reduced GHGs emissions from $167,332tonCO_2\;eq/yr$ in 2017 to $123,123tonCO_2\;eq/yr$ in 2026. Material recycling had the highest rate of GHG reduction ($-228,561tonCO_2\;eq/yr$ in 2026), followed by the solid refuse fuels ($-29,146tonCO_2\;eq/yr$ in 2026) and biogas treatment of food waste ($-3,421tonCO_2\;eq/yr$ in 2026). This study also shows that net GHG emission was found to be $-30,505tonCO_2\;eq$ in 2017 and $-105,428tonCO_2\;eq$, indicating a great and positive impact on future $CO_2$ emission. Improved MSW management with increased recycling and energy recovery of material waste streams can positively contribute to GHGs reduction and energy savings. The results of this study would help waste management decision-makers clarify the effectiveness of recycling MSW, and their corresponding energy recovery potentials, as well as to understand GHG reduction by the conversion.

#### Acknowledgement

Supported by : 충남대학교

#### References

1. van der Linden, S. L., Leiserowitz, A. A., Feinberg, G. D. and Maibach, E. W. : The scientific consensus on climate change as a gateway belief: Experimental evidence., PLoS ONE., Vol. 10, No. 2 (2015)
2. Intergovernmental Panel on Climate Change (IPCC) : Climate change 2014 impacts, adaptation, and vulnerability - summary for policymakers (2014)
3. Integrated Greenhouse gas Information Center : Ministry of environment, report of national greenhouse gas inventory (2017)
4. Daejeon Metropolitan City : The 3rd waste treatment fundamental plan (2012)
5. US EPA : Waste reduction model (WARM) version 13 (2015)
6. Prognos : Resource savings and $CO_2$ reduction potentials in waste management in Europe and the possible contribution to the $CO_2$ reduction target in 2020 (2008)
7. Yang, D., Xu, L., Gao, X., Guo, Q. and Huang, N. : Inventories and reduction scenarios of urban wasterelated greenhouse gas emissions for management potential, Science of the Total Environment, Vol. 626, pp. 727-736 (2018) https://doi.org/10.1016/j.scitotenv.2018.01.110
8. Joo, H. S., Lee, H. S. and Ko, E. Y. : Study of waste management options for greenhouse gas reduction, Korea Environment Institute (2010)
9. Kim, K. Y., Kang, J. G., Jun, A. H., Lee, S. S., Kim, K. H. and Oh, G. J. : A study of greenhouse reduction target goal by waste recycling (III), National Institute of Environmental Research (2012)
10. Ministry of Environment : Wastes generated and disposal status by city (2014)
11. Im, J. H., Ryu, J. Y., Oh, G. -J. and Yoon, J. I. : Analysis for environment impact potential of household waste transportation using LCA, Journal of Korea Society of Waste Management, Vol. 27, pp. 263-269 (2010)
12. Yu, Y. and Zhang, W. : Greenhouse gas emissions from solid waste in Beijing: The rising trend and the mitigation effects by management improvements, Waste Management & Research, Vol. 34, No. 4, pp. 368-377 (2016) https://doi.org/10.1177/0734242X16628982
13. Yi, S., Jang, Y. -C. and An, A. K. : Potential for energy recovery and greenhouse gas reduction through wasteto-energy technologies, Journal of Cleaner Production, Vol. 176, pp. 503-511 (2017)