Two-step mineral carbonation using seawater-based industrial wastewater: an eco-friendly carbon capture, utilization, and storage process

Injun Kim, Yunsung Yoo, Juhee Son, Jinwon Park, Il Sang Huh, Dongwoo Kang

Research output: Contribution to journalArticle

Abstract

Carbon dioxide is contained in the flue gas of many industrial plants, including those producing cement and power, and makes a significant contribution to climate change. Thus, methods to reduce carbon dioxide emissions are under intensive investigation. Carbon capture, utilization, and storage (CCUS) is a technology for converting captured carbon into useful chemical compounds while reducing CO2 emissions. Thus, CCUS technology is a promising method for combating global warming. In this study, we focused on a mineral carbonation CCUS process using seawater-based industrial wastewater (SBIW). A two-step CCUS process using NaOH as an absorbent for CO2 capture was used to produce two types of metal carbonate. Inductively coupled plasma optical emission spectroscopy, X-ray diffractometry, thermogravimetric analysis, and field-emission scanning electron microscopy techniques were used for analysis. Using our new technique, we obtained high-purity NaHCO3 (92.2%) and MgCO3 ·3H2O (93%). We also found that it is possible to improve the utilization of the cations present in seawater.

Original languageEnglish
Pages (from-to)333-347
Number of pages15
JournalJournal of Material Cycles and Waste Management
Volume22
Issue number2
DOIs
Publication statusPublished - 2020 Mar 1

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All Science Journal Classification (ASJC) codes

  • Waste Management and Disposal
  • Mechanics of Materials

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