Effect of absorbent type and concentration on CO2 capture from a gas stream into a liquid phase

Gustavo Capannelli, Antonio Comite, Camilla Costa, Renzo Di Felice

Research output: Contribution to journalArticle

12 Citations (Scopus)


Carbon dioxide from a gas stream was captured in a liquid water solution through a polymeric membrane that provided the interfacial area between the two phases. Three different absorbents (monoethanolamine, piperazine, and potassium carbonate) were tested, and the effects of their concentrations on the CO 2 absorption rate were investigated. The solution containing piperazine showed the best CO2 uptake, whereas that containing potassium carbonate was the least effective. This observation can be fully explained when the effects of the physicochemical parameters governing the absorption process (CO2 solubility, diffusivity, and reactivity in the solution) are taken into proper account. Useful guidelines for the correct design of a CO2 capturing system by a liquid solution were obtained.

Original languageEnglish
Pages (from-to)13128-13136
Number of pages9
JournalIndustrial and Engineering Chemistry Research
Issue number36
Publication statusPublished - Sep 11 2013

ASJC Scopus subject areas

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

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