Humidity impact on the gas permeability of PIM-1 membrane for post-combustion application

Elsa Lasseuguette, Maria-Chiara Ferrari*, Stefano Brandani

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The impact of humidity on PIM1 membrane performance, i.e. CO2 permeability and CO2/N-2 selectivity, is investigated in this study. While most novel materials are tested in dry conditions, flue gas contains a significant amount of water that could affect dramatically the membranes and the productivity of the separation process. In this work, mixed gas permeability was measured by a flow method measurement with humidity and CO2 sensor. Three different concentrations of CO2 are studied, pure CO2, and mixtures close to coal-fired and gas-fired power plants. Increasing water activity in the feed stream induces a decrease in the permeability of both CO2 and N-2. This behavior is related to the competitive sorption between water and CO2, and to the formation of water clusters which hindered the transport of others gas species. The same behavior is observed also for aged membranes. (C) 2014 The Authors. Published by Elsevier Ltd.

Original languageEnglish
Title of host publication12TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-12
EditorsT Dixon, H Herzog, S Twinning
Place of PublicationAMSTERDAM
PublisherElsevier B.V.
Pages194-201
Number of pages8
DOIs
Publication statusPublished - 2014
Event12th International Conference on Greenhouse Gas Control Technologies (GHGT) - Austin, Austin
Duration: 5 Oct 20149 Oct 2014

Publication series

NameEnergy Procedia
PublisherELSEVIER SCIENCE BV
Volume63
ISSN (Print)1876-6102

Conference

Conference12th International Conference on Greenhouse Gas Control Technologies (GHGT)
CityAustin
Period5/10/149/10/14

Keywords

  • Polymeric membrane
  • CO2 separation
  • Gas permeability
  • Selectivity
  • Humidity
  • PIM-1
  • INTRINSIC MICROPOROSITY
  • PERMEATION
  • SEPARATION
  • POLYMERS
  • CAPTURE

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