Investigating the effect of hydrogen sulfide impurities on the separation of fermentatively produced hydrogen by PDMS membrane

P. Bakonyi, F. Bogdán, V. Kocsi, N. Nemestóthy, K. Bélafi-Bakó, G. Buitrón

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This work reports on the separation of biohydrogen using a hollow-fiber PDMS membrane. The performance of the module was evaluated using binary CO2/H2 (35-65vol.% H2 content) and ternary CO2/H2/H2S mixtures (50vol.% H2, 50vol% CO2, 25-175ppm H2S) and the effect of recovery and gas composition (with special focus on hydrogen sulfide content) was revealed. H2S is a potential impurity of the raw gas coming from steady-state, dark fermentative hydrogen producing bioreactors. The results indicated that H2S could have a concentration-dependent impact on membrane behavior and affected the obtainable CO2/H2 selectivity. The outcomes were thoroughly compared to other relevant gas separation reports found in the literature. Evaluating the impacts of trace-level substances present in the gaseous mixture containing biohydrogen may help to design effective purification system based on membrane technology for the hydrogen economy.

Original languageEnglish
JournalSeparation and Purification Technology
DOIs
Publication statusAccepted/In press - Sep 25 2015

Fingerprint

Hydrogen Sulfide
Hydrogen sulfide
Hydrogen
Gases
Impurities
Membranes
Membrane technology
Bioreactors
Purification
Recovery
Fibers
Chemical analysis

Keywords

  • Biohydrogen
  • Gas separation
  • Hydrogen sulfide
  • Membrane
  • PDMS
  • Purification

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

Cite this

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title = "Investigating the effect of hydrogen sulfide impurities on the separation of fermentatively produced hydrogen by PDMS membrane",
abstract = "This work reports on the separation of biohydrogen using a hollow-fiber PDMS membrane. The performance of the module was evaluated using binary CO2/H2 (35-65vol.{\%} H2 content) and ternary CO2/H2/H2S mixtures (50vol.{\%} H2, 50vol{\%} CO2, 25-175ppm H2S) and the effect of recovery and gas composition (with special focus on hydrogen sulfide content) was revealed. H2S is a potential impurity of the raw gas coming from steady-state, dark fermentative hydrogen producing bioreactors. The results indicated that H2S could have a concentration-dependent impact on membrane behavior and affected the obtainable CO2/H2 selectivity. The outcomes were thoroughly compared to other relevant gas separation reports found in the literature. Evaluating the impacts of trace-level substances present in the gaseous mixture containing biohydrogen may help to design effective purification system based on membrane technology for the hydrogen economy.",
keywords = "Biohydrogen, Gas separation, Hydrogen sulfide, Membrane, PDMS, Purification",
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AU - Bakonyi, P.

AU - Bogdán, F.

AU - Kocsi, V.

AU - Nemestóthy, N.

AU - Bélafi-Bakó, K.

AU - Buitrón, G.

PY - 2015/9/25

Y1 - 2015/9/25

N2 - This work reports on the separation of biohydrogen using a hollow-fiber PDMS membrane. The performance of the module was evaluated using binary CO2/H2 (35-65vol.% H2 content) and ternary CO2/H2/H2S mixtures (50vol.% H2, 50vol% CO2, 25-175ppm H2S) and the effect of recovery and gas composition (with special focus on hydrogen sulfide content) was revealed. H2S is a potential impurity of the raw gas coming from steady-state, dark fermentative hydrogen producing bioreactors. The results indicated that H2S could have a concentration-dependent impact on membrane behavior and affected the obtainable CO2/H2 selectivity. The outcomes were thoroughly compared to other relevant gas separation reports found in the literature. Evaluating the impacts of trace-level substances present in the gaseous mixture containing biohydrogen may help to design effective purification system based on membrane technology for the hydrogen economy.

AB - This work reports on the separation of biohydrogen using a hollow-fiber PDMS membrane. The performance of the module was evaluated using binary CO2/H2 (35-65vol.% H2 content) and ternary CO2/H2/H2S mixtures (50vol.% H2, 50vol% CO2, 25-175ppm H2S) and the effect of recovery and gas composition (with special focus on hydrogen sulfide content) was revealed. H2S is a potential impurity of the raw gas coming from steady-state, dark fermentative hydrogen producing bioreactors. The results indicated that H2S could have a concentration-dependent impact on membrane behavior and affected the obtainable CO2/H2 selectivity. The outcomes were thoroughly compared to other relevant gas separation reports found in the literature. Evaluating the impacts of trace-level substances present in the gaseous mixture containing biohydrogen may help to design effective purification system based on membrane technology for the hydrogen economy.

KW - Biohydrogen

KW - Gas separation

KW - Hydrogen sulfide

KW - Membrane

KW - PDMS

KW - Purification

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