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 journalArticlepeer-review

51 Citations (Scopus)


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
Issue number35
Publication statusPublished - 2013 Nov 22

Bibliographical note

Funding Information:
This work was supported by the European Union and financed by the European Social Fund in the frame of the TAMOP-4.2.2/A-11/1/KONV-2012-0071 project and the János Bolyai Research Scholarship of the Hungarian Academy of Sciences . The authors also gratefully acknowledge the financial support by Taiwan's Bureau of Energy (grant no. 101-D0204-3 ), Taiwan's National Science Council ( NSC-99-2221-E-035-024-MY3 , NSC-99-2221-E-035-025-MY3 , NSC-99-2632-E-035-001-MY3 , NSC-101-2218-E-035-003-MY3 ), Feng Chia University ( FCU-10G27101 ).

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'Biohydrogen purification using a commercial polyimide membrane module: Studying the effects of some process variables'. Together they form a unique fingerprint.

Cite this