Energy-efficient chemical regeneration of AMP using calcium hydroxide for operating carbon dioxide capture process

Ji Min Kang, Arti Murnandari, Min Hye Youn, Wonhee Lee, Ki Tae Park, Young Eun Kim, Hak Joo Kim, Seong Pil Kang, Jung-hyun Lee, Soon Kwan Jeong

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

To avoid the main disadvantage of the carbon dioxide (CO2) capture process, namely the large amount of energy consumed to regenerate the amine absorbent using current thermal methods, chemical regeneration has been introduced as a novel method to regenerate the amine. Chemical regeneration deploys a swing in the pH of the amine absorbent rather than the swing in temperature of typical thermal regeneration procedures, and hence reduces the regeneration energy. Here we tested calcium chloride (CaCl2) and calcium hydroxide (Ca(OH)2) as a calcium source for CO2 desorption and a pH swing agent for amine regeneration. After desorbing from the amine, CO2 in our procedures reacted with Ca2+ to form calcium carbonate (CaCO3). Forming precipitated CaCO3 is a permanent way to sequester CO2. Since carbonates have a low energy level compared to CO2, we expect the developed method to be an economical and energy-efficient process.

Original languageEnglish
Pages (from-to)338-344
Number of pages7
JournalChemical Engineering Journal
Volume335
DOIs
Publication statusPublished - 2018 Mar 1

Fingerprint

Calcium Hydroxide
Hydrated lime
Adenosine Monophosphate
Carbon Dioxide
Amines
hydroxide
Carbon dioxide
regeneration
carbon dioxide
calcium
energy
Calcium Chloride
Calcium chloride
Calcium Carbonate
Carbonates
chemical method
Calcium carbonate
calcium carbonate
Electron energy levels
Calcium

Keywords

  • Amine regeneration
  • Calcium carbonate
  • Chemical regeneration
  • CO capture
  • CO sequestration

ASJC Scopus subject areas

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

Cite this

Energy-efficient chemical regeneration of AMP using calcium hydroxide for operating carbon dioxide capture process. / Kang, Ji Min; Murnandari, Arti; Youn, Min Hye; Lee, Wonhee; Park, Ki Tae; Kim, Young Eun; Kim, Hak Joo; Kang, Seong Pil; Lee, Jung-hyun; Jeong, Soon Kwan.

In: Chemical Engineering Journal, Vol. 335, 01.03.2018, p. 338-344.

Research output: Contribution to journalArticle

Kang, Ji Min ; Murnandari, Arti ; Youn, Min Hye ; Lee, Wonhee ; Park, Ki Tae ; Kim, Young Eun ; Kim, Hak Joo ; Kang, Seong Pil ; Lee, Jung-hyun ; Jeong, Soon Kwan. / Energy-efficient chemical regeneration of AMP using calcium hydroxide for operating carbon dioxide capture process. In: Chemical Engineering Journal. 2018 ; Vol. 335. pp. 338-344.
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AU - Murnandari, Arti

AU - Youn, Min Hye

AU - Lee, Wonhee

AU - Park, Ki Tae

AU - Kim, Young Eun

AU - Kim, Hak Joo

AU - Kang, Seong Pil

AU - Lee, Jung-hyun

AU - Jeong, Soon Kwan

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AB - To avoid the main disadvantage of the carbon dioxide (CO2) capture process, namely the large amount of energy consumed to regenerate the amine absorbent using current thermal methods, chemical regeneration has been introduced as a novel method to regenerate the amine. Chemical regeneration deploys a swing in the pH of the amine absorbent rather than the swing in temperature of typical thermal regeneration procedures, and hence reduces the regeneration energy. Here we tested calcium chloride (CaCl2) and calcium hydroxide (Ca(OH)2) as a calcium source for CO2 desorption and a pH swing agent for amine regeneration. After desorbing from the amine, CO2 in our procedures reacted with Ca2+ to form calcium carbonate (CaCO3). Forming precipitated CaCO3 is a permanent way to sequester CO2. Since carbonates have a low energy level compared to CO2, we expect the developed method to be an economical and energy-efficient process.

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KW - Calcium carbonate

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KW - CO sequestration

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