Morphology control of magnesium carbonate for CO2 utilization using Mg2+ ions in industrial wastewater depending on length of alkyl chain of primary alkanolamine, reaction temperature, CO2 concentration, and Mg2+/Na+ ratio

Yunsung Yoo, Dongwoo Kang, Eunji Choi, Jin Won Park, Il Sang Huh

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1 Citation (Scopus)

Abstract

Because global warming has been a constant issue in the environmental field, many studies on the mitigation of CO2 have been conducted. This study for carbon dioxide utilization dealt with the characteristics of magnesium carbonate formation using Mg2+ ions separated from seawater-based industrial wastewater and alkanolamine absorbent depending on the alkyl chain length of the primary alkanolamine type absorbent, reaction temperature, CO2 concentration, and Mg2+/Na+ ratio as part of the investigation. First, nesquehonite was formed with a relatively short length and amorphous MgCO3·3H2O was formed with a relatively long length in the alkyl chain length experiment. Second, nesquehonite at low temperature was produced, and hydromagnesite was produced as temperature increased in the reaction temperature experiment. In addition, nesquehonite was only magnesium carbonate depending on CO2 concentration, but each product had different purities. Finally, increasing of Mg2+/Na+ ratio derived production of not nesquehonite but hydromagnesite with high purity of over 98 wt%. Through this study, the morphology and purity control of magnesium carbonate can reach commercialization levels in the particular conditions, and industrial application of carbon capture and utilization processes using wastewater and alkanolamine absorbent would be achieved.

Original languageEnglish
Pages (from-to)237-250
Number of pages14
JournalChemical Engineering Journal
Volume370
DOIs
Publication statusPublished - 2019 Aug 15

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Alkanolamines
Magnesium
Carbonates
magnesium
Wastewater
Ions
carbonate
wastewater
ion
Chain length
temperature
commercialization
Temperature
Carbon capture
global warming
Global warming
mitigation
carbon dioxide
experiment
Seawater

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

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title = "Morphology control of magnesium carbonate for CO2 utilization using Mg2+ ions in industrial wastewater depending on length of alkyl chain of primary alkanolamine, reaction temperature, CO2 concentration, and Mg2+/Na+ ratio",
abstract = "Because global warming has been a constant issue in the environmental field, many studies on the mitigation of CO2 have been conducted. This study for carbon dioxide utilization dealt with the characteristics of magnesium carbonate formation using Mg2+ ions separated from seawater-based industrial wastewater and alkanolamine absorbent depending on the alkyl chain length of the primary alkanolamine type absorbent, reaction temperature, CO2 concentration, and Mg2+/Na+ ratio as part of the investigation. First, nesquehonite was formed with a relatively short length and amorphous MgCO3·3H2O was formed with a relatively long length in the alkyl chain length experiment. Second, nesquehonite at low temperature was produced, and hydromagnesite was produced as temperature increased in the reaction temperature experiment. In addition, nesquehonite was only magnesium carbonate depending on CO2 concentration, but each product had different purities. Finally, increasing of Mg2+/Na+ ratio derived production of not nesquehonite but hydromagnesite with high purity of over 98 wt{\%}. Through this study, the morphology and purity control of magnesium carbonate can reach commercialization levels in the particular conditions, and industrial application of carbon capture and utilization processes using wastewater and alkanolamine absorbent would be achieved.",
author = "Yunsung Yoo and Dongwoo Kang and Eunji Choi and Park, {Jin Won} and Huh, {Il Sang}",
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AU - Kang, Dongwoo

AU - Choi, Eunji

AU - Park, Jin Won

AU - Huh, Il Sang

PY - 2019/8/15

Y1 - 2019/8/15

N2 - Because global warming has been a constant issue in the environmental field, many studies on the mitigation of CO2 have been conducted. This study for carbon dioxide utilization dealt with the characteristics of magnesium carbonate formation using Mg2+ ions separated from seawater-based industrial wastewater and alkanolamine absorbent depending on the alkyl chain length of the primary alkanolamine type absorbent, reaction temperature, CO2 concentration, and Mg2+/Na+ ratio as part of the investigation. First, nesquehonite was formed with a relatively short length and amorphous MgCO3·3H2O was formed with a relatively long length in the alkyl chain length experiment. Second, nesquehonite at low temperature was produced, and hydromagnesite was produced as temperature increased in the reaction temperature experiment. In addition, nesquehonite was only magnesium carbonate depending on CO2 concentration, but each product had different purities. Finally, increasing of Mg2+/Na+ ratio derived production of not nesquehonite but hydromagnesite with high purity of over 98 wt%. Through this study, the morphology and purity control of magnesium carbonate can reach commercialization levels in the particular conditions, and industrial application of carbon capture and utilization processes using wastewater and alkanolamine absorbent would be achieved.

AB - Because global warming has been a constant issue in the environmental field, many studies on the mitigation of CO2 have been conducted. This study for carbon dioxide utilization dealt with the characteristics of magnesium carbonate formation using Mg2+ ions separated from seawater-based industrial wastewater and alkanolamine absorbent depending on the alkyl chain length of the primary alkanolamine type absorbent, reaction temperature, CO2 concentration, and Mg2+/Na+ ratio as part of the investigation. First, nesquehonite was formed with a relatively short length and amorphous MgCO3·3H2O was formed with a relatively long length in the alkyl chain length experiment. Second, nesquehonite at low temperature was produced, and hydromagnesite was produced as temperature increased in the reaction temperature experiment. In addition, nesquehonite was only magnesium carbonate depending on CO2 concentration, but each product had different purities. Finally, increasing of Mg2+/Na+ ratio derived production of not nesquehonite but hydromagnesite with high purity of over 98 wt%. Through this study, the morphology and purity control of magnesium carbonate can reach commercialization levels in the particular conditions, and industrial application of carbon capture and utilization processes using wastewater and alkanolamine absorbent would be achieved.

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