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2020 Vol.57, Issue 2 Preview Page

Research Paper

Evaluation of the Availability of CO2 Reduction in a Landfill by Mineral Carbonation Using Industrial By-products

산업폐기물 활용 광물탄산화를 통한 폐기물매립시설의 CO2 저감 가능성 평가

Su Chul Yoon1*
,
Sang Min Kim1
,
Sang Hoon Song1
,
Jin Kyu Park2
,
Se Heum Moon3
,
Nam Hoon Lee1
윤 수철1*
,
김 상민1
,
송 상훈1
,
박 진규2
,
문 세흠3
,
이 남훈1
1안양대학교 환경에너지공학과
2(주)에코윌플러스
3환경부 자원순환정책관 폐자원관리과
* Corresponding Author
30 April 2020. pp. 176-184
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Abstract

This study aimed to evaluate the availability of mineral carbonation using industrial by-products, that are capable of reducing the amount of CO2 in gas generated from solid waste landfills. With this objective, we first investigated the reduction of CO2 obtained using different types of industrial waste containing alkaline earth metals, as well as the effect of water on this process. Second, we compared the CO2 reductions obtained using these types of industrial waste. Third, elemental composition and DSC–TGA analyses were carried out to investigate the chemical reactions linked to CO2 reduction. The reduction of CO2 hardly occurred at 30°C (a temperature that simulated the landfill environment). The DSC–TGA thermogravimetric analysis demonstrated the occurrence of weight loss over the temperature range of carbonate mineral decomposition; moreover, the total amount of CO2 was 2.84 wt%, corresponding to 28.4 g CO2/kg of solidified sludge. Overall, these data confirmed the occurrence of CO2 reduction as a result of mineral carbonation.

Keywords
Mineral carbonation
CO2
Alkaline industrial wastes
Solidified sludge

본 연구에서는 산업부산물의 광물탄산화 반응을 통해 폐기물매립시설로부터 발생되는 CO2 가스를 저감시키기 위한 가능성을 평가하였다. 본 연구의 목적은 첫째, 알칼리토금속을 함유하는 산업부산물의 CO2 저감 평가 및 수분함량에 의한 저감능력을 평가하는 것이다. 둘째, 각각의 산업부산물의 CO2 저감 능력을 비교하는 것이다. 셋째, CO2 저감의 화학적 반응을 확인하기 위해 화합물원소 분석과 열중량분석(DSC-TGA)을 수행하는 것이다. 매립시설 환경을 모사한 30°C의 조건에서의 DSC-TGA 열중량 분석 결과, CO2 저감량이 2.84 wt%로, 즉 1kg의 고화슬러지는 28.4g의 CO2를 저감할 수 있는 것으로 나타났다.

키워드
광물탄산화
이산화탄소
알칼리 산업폐기물
고화슬러지
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Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
  • Journal Title(Ko) :한국자원공학회지
  • Volume : 57
  • No :2
  • Pages :176-184
  • Received Date : 2020-03-27
  • Revised Date : 2020-04-17
  • Accepted Date : 2020-04-24
  • DOI :https://doi.org/10.32390/ksmer.2020.57.2.176
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