Biohydrogen purification using a commercial polyimide membrane module: Studying the effects of some process variables

P. Bakonyi, G. Kumar, N. Nemestóthy, C. Y. Lin, K. Bélafi-Bakó

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

In this work the purification of biohydrogen was attempted in mixed gas measurements using a commercial polyimide membrane module. The impact of several process variables (gas composition, temperature, ratio of retentate and feed flows) on the real separation efficiency was statistically studied applying a 3-level full-factorial experimental design. The results showed that all the factors examined could significantly affect the achievable selectivity and it was observed that the theoretical and real separation factors were remarkably different. It was also found that - in comparison with other commercially available membranes - the module reflected potential for hydrogen enrichment. Considering the design boundaries, the highest H2/CO2 gas selectivity (1.62) could be achieved at feed pressure, separation temperature and recovery value of ∼2.2 bar, 55 C and 0.6, respectively, using a 65 vol% hydrogen/35 vol% carbon-dioxide binary mixture.

Original languageEnglish
Pages (from-to)15092-15099
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number35
DOIs
Publication statusPublished - 2013 Nov 22

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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