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Characteristics of Metal Cation Carbonation and Carbon Dioxide Utilization Using Seawater‐Based Industrial Wastewater
Author(s) -
Yoo Yunsung,
Kang Dongwoo,
Kim Injun,
Park Jinwon
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201800346
Subject(s) - carbonation , thermogravimetry , industrial wastewater treatment , wastewater , flue gas , carbon dioxide , chemistry , salt (chemistry) , metal ions in aqueous solution , metal , inorganic chemistry , chemical engineering , environmental engineering , environmental science , organic chemistry , engineering
In this study, carbon capture and utilization (CCU) technology was used to capture CO 2 in simulated industrial flue gas using industrial wastewater from a refined‐salt production plant. Also, captured CO 2 was converted to metal carbonate salt which has a potential to be used as valuable product in another industry. In order to increase the purity of the products, the target ions were first separated from the industrial wastewater using pH control. And, three amine‐type absorbents were used to transport CO 2 to the metal ions for carbonation reaction. However, for that which cannot make precipitated salt with ionic CO 2 species, direct carbonation method was applied. X‐Ray Diffraction, Field‐Emission Scanning Electron Microscopy, and Thermogravimetry/Derivative Thermogravimetry were used to investigate properties of the products. Mg and Ca product were comprised of nesquehonite‐ (purity: 95.150%) and calcite‐dominant (purity: 96.51%) mixtures, respectively. Under the experimental conditions, the number of mole of CO 2 converted to valuable material in the total process was 0.9546 mol per 500 ml industrial wastewater.