Simultaneous CO2 Sequestration of Korean Municipal Solid Waste Incineration Bottom Ash and Encapsulation of Heavy Metals by Accelerated Carbonation
The aim of this work was to evaluate the amount of CO2 that could be sequestered with a view to decrease greenhouse gas emissions and investigate the feasibility of modernizing some specific properties of the municipal solid waste incineration bottom ash with accelerated carbonation. Municipal solid waste incineration (MSWI) fly ash and bottom ashes are the byproducts of the incineration combustion process. We collected the different samples from four incineration plants located in Seoul. Some of the Korean MSWI byproducts contain heavy metals. Here, we reported encapsulation effect of some heavy metals such as arsenic (As), chromium (Cr), cadmium (Cd), lead (Pb), and nickel (Ni) in MSWI ashes by accelerated carbonation process. The carbonation reaction would promote CO2 sequestration. In this paper, we reported the simultaneous CO2 sequestration of municipal solid waste incineration byproducts and encapsulation studies of heavy metals. The investigations were carried out at the bench scale. Finally, an efficient removal of heavy metals (90–95%) was achieved.
KeywordsMSWI samples Encapsulation Heavy metals CO2 sequestration
This research was supported by the Energy Technology Development Project  of the Korea Institute of Energy Technology Evaluation and Planning, financed by the Ministry of Trade, Industry and Energy, and the National Strategic Project-Carbon Mineralization Flagship Center of the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (MSIT), the Ministry of Environment (ME) and the Ministry of Trade, Industry and Energy (MOTIE) (NRF-2017M3D8A2084752).
- 1.Ministry of Environment in Korea (2005)Google Scholar
- 3.The United States Environmental Protection Agency (2009) Opportunities to reduce greenhouse gas emissions through materials and land management practices; office of solid waste and emergency response (RPA). Washington DC, USAGoogle Scholar
- 4.MKE (2008) Industrial development strategy for “Green Growth”. Ministry of Knowledge Economy, Gwacheon, KoreaGoogle Scholar
- 5.Kaibouchi S, Germain P (2003) Comparative study of physico-chemical and environmental characteristics of MSWI bottom ash resulting from classical and selective collection for a valorization inroad construction. In: Ortiz de Urbina G, Goumans H (eds) WASCON progress on the road to sustainability, fifth international conference on the environmental and technical implications of construction with alternative materials, pp 645–653, San Sebastian, Spain, 4–6 June 2003Google Scholar
- 10.Fernandez Bertos M, Jonhson D, Simons S, Hills S, Carey P (2003) Sequestration of carbon dioxide in artificial aggregates. In: Ortiz de Urbina G, Goumans H (eds) WASCON, progress on the road to sustainability, fifth international conference on the environmental and technical implications of construction with alternative materials, pp 913–916, San Sebastian, Spain, 4–6 June 2003Google Scholar