A new recovery process of carbon dioxide from alkaline carbonate solution via electrodialysis

Hiroki Nagasawa, Akihiro Yamasaki, Atsushi Iizuka, Kazukiyo Kumagai, Yukio Yanagisawa

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Bipolar membrane electrodialysis is applied to CO2 recovery from alkaline carbonate solution. CO2 in flue gas is captured by an alkaline hydroxide absorbing solution to form an alkaline carbonate solution. The captured CO2 is recovered from the alkaline carbonate solution via bipolar membrane electrodialysis, and the alkaline solution is regenerated simultaneously. To reduce the power requirement for CO2 recovery, this study considers optimal design and operation. Three membrane arrangements were compared, and the results indicate the membrane arrangement comprising a bipolar membrane and cation exchange membrane is the most energy saving. With further optimization of operation conditions, the minimum power requirement for CO2 recovery was reduced to 2.1 MJ/kg-CO2 (or 2.1 GJ/t-CO2).

Original languageEnglish
Pages (from-to)3286-3293
Number of pages8
JournalAIChE Journal
Volume55
Issue number12
DOIs
Publication statusPublished - 2009 Dec 1
Externally publishedYes

Keywords

  • Bipolar membrane electrodialysis
  • CCS
  • CO capture

ASJC Scopus subject areas

  • Biotechnology
  • Environmental Engineering
  • Chemical Engineering(all)

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