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가속탄산화를 통한 Ca-rich Waste Mineral의 정량적인 CO<sub>2</sub> 고용량 평가
남성영,엄남일,안지환,Nam, Seong-Young,Um, Nam-Il,Ahn, Ji-Whan 한국세라믹학회 2014 한국세라믹학회지 Vol.51 No.2
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.
CaCO<sub>3</sub> 첨가법에 따른 재생 ONP의 특성변화
안영준,남성영,엄남일,안지환,한춘,Ahn, Young-Jun,Nam, Seong-Young,Um, Nam-Il,Ahn, Ji-Whan,Han, Choon 한국세라믹학회 2014 한국세라믹학회지 Vol.51 No.2
In order to improve the refresh rate of old newspaper(ONP), PCC shape-controlling experiments were carried out. The effect of a PCC polymorph on improving the quality of old newspaper was studied for a transformation from waste paper to eco-friendly paper. The synthesis of PCC consists of an in-situ process and a loading process to enhance the refresh rate of old newspaper. The characteristics between the in-situ process and the loading process could be analysed by SEM analyses of coated fiber surfaces. The retention rate ranges from 65 to 67% after the application of the in-situ process, and that after the loading process ranges from 55 to 58%. The retention rates thus show a difference of about 7-10%. In addition, the whiteness and ERIC characteristics of the in-situ process gave more efficient results than those of the loading process.