Comparison of Two Processes Forming CaCO 3 Precipitates by Electrolysis

Hyun Sic Park, JunYoung Han, Ju Sung Lee, Kwang-Mo Kim, Hyung Jun Jo and Byoung Ryul Min
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Hyun Sic Park: Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, Korea
JunYoung Han: Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
Ju Sung Lee: Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, Korea
Kwang-Mo Kim: COSMAX #603, Pangyo Inno Valley, 255, Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13486, Korea
Hyung Jun Jo: Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, Korea
Byoung Ryul Min: Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, Korea

Energies, 2016, vol. 9, issue 12, 1-8

Abstract: As one of the carbon capture and utilization (CCU) technologies, mineral carbonation which has been introduced to reduce the carbon dioxide (CO 2 ) concentration in the atmosphere is a technology that makes it possible to capture CO 2 and recycle byproducts as resources. However, existing mineral carbonation requires additional energy and costs, as it entails high temperature and high pressure reaction conditions. This study compared two processes which electrolyze NaCl and CaCl 2 solution to produce CO 2 absorbent needed to generate CaCO 3 , and which were conducted at room temperature and pressure unlike existing mineral carbonation. As a result, high-purity calcite was obtained through Process 1 using NaCl solution, and aragonite and portlandite were obtained in addition to calcite through Process 2 (two steps) using CaCl 2 solution.

Keywords: mineral carbonation; CaCO 3; electrolysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
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