Separation of biohydrogen by supported ionic liquid membranes

Research output: Contribution to journalArticle

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Abstract

This work Studied the use of room temperature ionic liquids (RTILs) based on the 1-n-alkyl-3-methylimidazolium cation, in supported liquid membranes (SLMs), in order to use them as membrane materials for separation and enrichment of hydrogen from a gaseous mixture containing H-2, CO2, and N-2. Different RTILs, with different chain length of alkyl substituents oil the imidazolium cation and different anions, were incorporated in a PVDF hydrophobic membrane in order to study its effect on the permeability and on the selectivity towards the gases present in the fermentation process. Experiments were conducted in a constant pressure system and temperature (30 degrees C), and pure gas permeability/selectivity data were reported. Supported ionic liquid membranes (SILMs) have been found to be stable at the pressure Studied. The highest permeability value (30.70 x 10(-11) m(2)/s) was obtained for the PVDF membrane immobilized with the RTIL [OMIM][PF6]. The high selectivity values towards CO2, between 22 (for [OMIM][PF6]) and 35 (for [BMIM][BF4]), obtained indicates that these SILMs Could be used for this process.
Original languageUnknown
Pages (from-to)311-315
JournalDesalination
Volume240
Issue number1-3
DOIs
Publication statusPublished - 1 Jan 2009

Cite this

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title = "Separation of biohydrogen by supported ionic liquid membranes",
abstract = "This work Studied the use of room temperature ionic liquids (RTILs) based on the 1-n-alkyl-3-methylimidazolium cation, in supported liquid membranes (SLMs), in order to use them as membrane materials for separation and enrichment of hydrogen from a gaseous mixture containing H-2, CO2, and N-2. Different RTILs, with different chain length of alkyl substituents oil the imidazolium cation and different anions, were incorporated in a PVDF hydrophobic membrane in order to study its effect on the permeability and on the selectivity towards the gases present in the fermentation process. Experiments were conducted in a constant pressure system and temperature (30 degrees C), and pure gas permeability/selectivity data were reported. Supported ionic liquid membranes (SILMs) have been found to be stable at the pressure Studied. The highest permeability value (30.70 x 10(-11) m(2)/s) was obtained for the PVDF membrane immobilized with the RTIL [OMIM][PF6]. The high selectivity values towards CO2, between 22 (for [OMIM][PF6]) and 35 (for [BMIM][BF4]), obtained indicates that these SILMs Could be used for this process.",
keywords = "membranes, Biohydrogen, liquid, separation, temperature, Gas, ionic, liquids, Room, Supported",
author = "Coelhoso, {Isabel Maria Rola}",
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day = "1",
doi = "10.1016/j.desal.2007.10.095",
language = "Unknown",
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Separation of biohydrogen by supported ionic liquid membranes. / Coelhoso, Isabel Maria Rola.

In: Desalination, Vol. 240, No. 1-3, 01.01.2009, p. 311-315.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Separation of biohydrogen by supported ionic liquid membranes

AU - Coelhoso, Isabel Maria Rola

PY - 2009/1/1

Y1 - 2009/1/1

N2 - This work Studied the use of room temperature ionic liquids (RTILs) based on the 1-n-alkyl-3-methylimidazolium cation, in supported liquid membranes (SLMs), in order to use them as membrane materials for separation and enrichment of hydrogen from a gaseous mixture containing H-2, CO2, and N-2. Different RTILs, with different chain length of alkyl substituents oil the imidazolium cation and different anions, were incorporated in a PVDF hydrophobic membrane in order to study its effect on the permeability and on the selectivity towards the gases present in the fermentation process. Experiments were conducted in a constant pressure system and temperature (30 degrees C), and pure gas permeability/selectivity data were reported. Supported ionic liquid membranes (SILMs) have been found to be stable at the pressure Studied. The highest permeability value (30.70 x 10(-11) m(2)/s) was obtained for the PVDF membrane immobilized with the RTIL [OMIM][PF6]. The high selectivity values towards CO2, between 22 (for [OMIM][PF6]) and 35 (for [BMIM][BF4]), obtained indicates that these SILMs Could be used for this process.

AB - This work Studied the use of room temperature ionic liquids (RTILs) based on the 1-n-alkyl-3-methylimidazolium cation, in supported liquid membranes (SLMs), in order to use them as membrane materials for separation and enrichment of hydrogen from a gaseous mixture containing H-2, CO2, and N-2. Different RTILs, with different chain length of alkyl substituents oil the imidazolium cation and different anions, were incorporated in a PVDF hydrophobic membrane in order to study its effect on the permeability and on the selectivity towards the gases present in the fermentation process. Experiments were conducted in a constant pressure system and temperature (30 degrees C), and pure gas permeability/selectivity data were reported. Supported ionic liquid membranes (SILMs) have been found to be stable at the pressure Studied. The highest permeability value (30.70 x 10(-11) m(2)/s) was obtained for the PVDF membrane immobilized with the RTIL [OMIM][PF6]. The high selectivity values towards CO2, between 22 (for [OMIM][PF6]) and 35 (for [BMIM][BF4]), obtained indicates that these SILMs Could be used for this process.

KW - membranes

KW - Biohydrogen

KW - liquid

KW - separation

KW - temperature

KW - Gas

KW - ionic

KW - liquids

KW - Room

KW - Supported

U2 - 10.1016/j.desal.2007.10.095

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VL - 240

SP - 311

EP - 315

JO - Desalination

JF - Desalination

SN - 0011-9164

IS - 1-3

ER -