Abstract
The removal of water from gas streams, in particular flue gas and biogas, is an important industrial operation. To mimic these industrial dehydration processes, permeation of water vapour, pure gases (CO2, CH4 and N2) and gas mixtures containing 20 vol% CO2 + 80 vol% N2 and 70 vol% CH4 + 30 vol% CO2, at different conditions of relative humidity, was monitored by mass spectrometry. The potential of using hybrid polysaccharide membranes obtained from a low cost carbon source (glycerol) and crosslinked using (3-Glycidyloxypropyl) trimethoxysilane (GPTMS) as silica precursor by a sol-gel method was evaluated. The hybrid membranes developed showed barrier properties to all gases studied, with a gas permeability below 1 barrer, while exhibiting high water permeabilities and selectivities. When process in a biogas mixture, the water permeability was found to be three times higher than water permeability in a flue gas mixture, leading to a H2O/CH4 selectivity much higher than H2O/N2 selectivity. These membranes showed, under close-to-real conditions, that they have the ability to dehydrate mixtures, with the advantage of not losing N2 or CH4, due to the low permeability values of these gases.
| Original language | English |
|---|---|
| Pages (from-to) | 1-8 |
| Number of pages | 8 |
| Journal | Journal of Membrane Science |
| Volume | 562 |
| DOIs | |
| Publication status | Published - 15 Sep 2018 |
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Keywords
- Flue gas and biogas dehydration
- Hybrid membranes
- Mass spectrometry
- Microbial polysaccharides
- Sol-gel process
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Evaluation of hybrid polysaccharide membranes for gas dehydration using on-line mass spectrometry. / Meireles, Inês T.; Fraga, Sofia C.; Huertas, Rosa M.; Brazinha, Carla; Coelhoso, Isabel M.; Crespo, João G.
In: Journal of Membrane Science, Vol. 562, 15.09.2018, p. 1-8.Research output: Contribution to journal › Article
TY - JOUR
T1 - Evaluation of hybrid polysaccharide membranes for gas dehydration using on-line mass spectrometry
AU - Meireles, Inês T.
AU - Fraga, Sofia C.
AU - Huertas, Rosa M.
AU - Brazinha, Carla
AU - Coelhoso, Isabel M.
AU - Crespo, João G.
N1 - Sem PDF conforme despacho. info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F80699%2F2011/PT# info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F81814%2F2011/PT# info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F79533%2F2011/PT# info:eu-repo/grantAgreement/FCT/5876/147218/PT# info:eu-repo/grantAgreement/FCT/5876/147260/PT# Ines T. Meireles, Sofia C. Fraga and Carla Brazinha acknowledge Fundacao para a Ciencia e Tecnologia for Ph.D. fellowship SFRH/BD/80699/2011 and SFRH/BD/81814/2011), respectively for Ines and Sofia; and Post Doc Fellow Grant of Carla (SFRH/BPD/79533/2011). The authors also acknowledge the Associate Laboratory for Green Chemistry-LAQV which is financed by national funds from FCT/MCTES (UID/QUI/50006/2013) and co-financed by the ERDF under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007265) for financial support. Rosa M. Huertas acknowledges the financial support from the European Commission through the projects, D-Factory (FP7-KBBE) and Multibiorefinery (03/SAICT/2015). iNOVA4Health - UID/Multi/04462/2013, a program financially supported by Fundacao para a Ciencia e Tecnologia/Ministerio da Educacao e Ciencia, through national funds and co-funded by FEDER under the PT2020 Partnership Agreement is also gratefully acknowledged.
PY - 2018/9/15
Y1 - 2018/9/15
N2 - The removal of water from gas streams, in particular flue gas and biogas, is an important industrial operation. To mimic these industrial dehydration processes, permeation of water vapour, pure gases (CO2, CH4 and N2) and gas mixtures containing 20 vol% CO2 + 80 vol% N2 and 70 vol% CH4 + 30 vol% CO2, at different conditions of relative humidity, was monitored by mass spectrometry. The potential of using hybrid polysaccharide membranes obtained from a low cost carbon source (glycerol) and crosslinked using (3-Glycidyloxypropyl) trimethoxysilane (GPTMS) as silica precursor by a sol-gel method was evaluated. The hybrid membranes developed showed barrier properties to all gases studied, with a gas permeability below 1 barrer, while exhibiting high water permeabilities and selectivities. When process in a biogas mixture, the water permeability was found to be three times higher than water permeability in a flue gas mixture, leading to a H2O/CH4 selectivity much higher than H2O/N2 selectivity. These membranes showed, under close-to-real conditions, that they have the ability to dehydrate mixtures, with the advantage of not losing N2 or CH4, due to the low permeability values of these gases.
AB - The removal of water from gas streams, in particular flue gas and biogas, is an important industrial operation. To mimic these industrial dehydration processes, permeation of water vapour, pure gases (CO2, CH4 and N2) and gas mixtures containing 20 vol% CO2 + 80 vol% N2 and 70 vol% CH4 + 30 vol% CO2, at different conditions of relative humidity, was monitored by mass spectrometry. The potential of using hybrid polysaccharide membranes obtained from a low cost carbon source (glycerol) and crosslinked using (3-Glycidyloxypropyl) trimethoxysilane (GPTMS) as silica precursor by a sol-gel method was evaluated. The hybrid membranes developed showed barrier properties to all gases studied, with a gas permeability below 1 barrer, while exhibiting high water permeabilities and selectivities. When process in a biogas mixture, the water permeability was found to be three times higher than water permeability in a flue gas mixture, leading to a H2O/CH4 selectivity much higher than H2O/N2 selectivity. These membranes showed, under close-to-real conditions, that they have the ability to dehydrate mixtures, with the advantage of not losing N2 or CH4, due to the low permeability values of these gases.
KW - Flue gas and biogas dehydration
KW - Hybrid membranes
KW - Mass spectrometry
KW - Microbial polysaccharides
KW - Sol-gel process
UR - http://www.scopus.com/inward/record.url?scp=85047273400&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2018.05.030
DO - 10.1016/j.memsci.2018.05.030
M3 - Article
VL - 562
SP - 1
EP - 8
JO - Journal of Membrane Science
JF - Journal of Membrane Science
SN - 0376-7388
ER -