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http://dx.doi.org/10.4191/kcers.2014.51.2.64

Quantitative Evaluation of CO2 Sequestration in Ca-rich Waste Mineral for Accelerated Carbonation  

Nam, Seong-Young (Korea Institute of Geoscience and Mineral Resources (KIGAM))
Um, Nam-Il (National Institute of Environmental Research)
Ahn, Ji-Whan (Korea Institute of Geoscience and Mineral Resources (KIGAM))
Publication Information
Journal of the Korean Ceramic Society / v.51, no.2, 2014 , pp. 64-71 More about this Journal
Abstract
Accelerated carbonation is a technique that can be used as a CCS technology for $CO_2$ sequestration of approximately 5~20% in a stable solid through the precipitation of carbonate. An alkaline inorganic waste material such as ash, slag, and cement paste are generated from incinerators, accelerated carbonation offers the advantage of lower transport and processing costs at the same generation location of waste and $CO_2$. In this study, we evaluated an amount of $CO_2$ sequestration in various types of inorganic alkaline waste processed by means of accelerated carbonation. A quantitative evaluation of $CO_2$ real sequestration based on a TG/DTA analysis, the maximum 118.88 $g/kg_{-waste}$ of $CO_2$ in paper sludge fly ash, the maximum 134.46 $g/kg_{-waste}$ of $CO_2$ in municipal solid waste incinerator bottom ash, the maximum 9.72 $g/kg_{-waste}$ of $CO_2$ in industrial solid waste incinerator fly ash, and the maximum $18.19g/kg_{-waste}$ of $CO_2$ in waste cement paste.
Keywords
Alkaline inorganic wastes; $CO_2$ sequestration; Accelerated carbonation;
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