Absorption/regeneration performance evaluation of methanol based magnetic nanoabsorbent for industrial CO2 capture applications

Jong Ha Park, Jae Won Lee, Seonggon Kim, Ronghuan Xu, Yong Tae Kang

Research output: Contribution to journalArticlepeer-review

Abstract

In the present study, surface modification of Fe3O4 particles with ascorbic acid (AA-Fe3O4) is carried out to enhance the absorption and regeneration performances of Fe3O4 nanoabsorbents with magnetic fields. The surface modified AA-Fe3O4 particles compensate for the defects of commercial magnetic nanoparticles by enhanced hydrophilicity and increased surface area. Methanol, which is widely used as a conventional industrial physical absorbent of CO2 capture, is used as a base fluid; however, the absorption process must be operated at low temperature for high absorption performance. In addition, a substantial amount of energy input is required to reach the regeneration operating temperature. Manufactured AA-Fe3O4 is analyzed using various analysis methods to assess absorption characteristics. Furthermore, a property analysis of 0.005 vol% AA-Fe3O4 dispersed in methanol shows that a high dispersion stability is obtained compared to 0.005 vol% commercial Fe3O4 dispersed in methanol. An evaluation on the performance of AA-Fe3O4 at 25 °C in the presence of external rotating magnetic fields shows an enhancement of 23.3 % in absorption. According to the specific energy consumption analysis, it is concluded that AA-Fe3O4/methanol nanoabsorbents will be beneficial for industrial applications in efficient energy savings for CO2 capture.

Original languageEnglish
Article number101753
JournalJournal of CO2 Utilization
Volume54
DOIs
Publication statusPublished - 2021 Dec

Keywords

  • CO absorption/regeneration
  • Magnetic fields
  • Magnetite
  • Methanol
  • Nanoabsorbents
  • Specific energy consumption analysis

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Waste Management and Disposal
  • Process Chemistry and Technology

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