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Energies 2016, 9(12), 1052; doi:10.3390/en9121052

Comparison of Two Processes Forming CaCO3 Precipitates by Electrolysis

1
Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, Korea
2
Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
3
COSMAX #603, Pangyo Inno Valley, 255, Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13486, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Covadonga Pevida García
Received: 28 September 2016 / Revised: 1 December 2016 / Accepted: 8 December 2016 / Published: 13 December 2016

Abstract

As one of the carbon capture and utilization (CCU) technologies, mineral carbonation which has been introduced to reduce the carbon dioxide (CO2) concentration in the atmosphere is a technology that makes it possible to capture CO2 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 CaCl2 solution to produce CO2 absorbent needed to generate CaCO3, 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 CaCl2 solution.
Keywords: mineral carbonation; CaCO3; electrolysis mineral carbonation; CaCO3; electrolysis
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Park, H.S.; Han, J.; Lee, J.S.; Kim, K.-M.; Jo, H.J.; Min, B.R. Comparison of Two Processes Forming CaCO3 Precipitates by Electrolysis. Energies 2016, 9, 1052.

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