Gas separation transport modeling for PDMS coatings on PEI-PEG IPN membranes

Dal‐Cin, Mauro M.; Darcovich, K.; Sundar, Saimani; Kumar, Ashwani

doi:10.1016/j.memsci.2010.05.059

Cited by 12 publications

(4 citation statements)

References 24 publications

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“…Moreover, polymers commonly suffer from thermal degradation and plasticization, when exposed to service environments in clean energy applications. [26][27][28][29] Therefore, other materials which are comprised of rigid and definable pores need to be developed in order to overcome the upper bound and hence deliver superior performance whilst minimizing costs related to pressurization and multi-stage capital equipment.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of zeolitic imidazolate framework membranes for clean energy applications

Thornton

Dubbeldam

Liu

et al. 2012

Energy Environ. Sci.

156

141

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Gas separation technologies for carbon-free hydrogen and clean gaseous fuel production must efficiently perform the following separations: (1) H 2 /CO 2 (and H 2 /N 2 ) for pre-combustion coal gasification, (2) CO 2 /N 2 for post-combustion of coal, (3) CO 2 /CH 4 for natural gas sweetening and biofuel purification, and (4) O 2 /N 2 for oxy-combustion of coal. By utilizing a molecular simulation approach, Monte Carlo procedures, free volume analysis, and continuum modeling, we predict the intrinsic gas permeability and separation properties of several new Zeolitic Imidazolate Frameworks (ZIFs), a family of the Metal-Organic Frameworks (MOFs). The well defined pore sizes in conjunction with high surface areas make ZIFs prime candidates for molecular sieving. In this work, our calculated intrinsic properties are compared with current experimental results where ZIFs are either grown in dense layers to form pure inorganic membranes on porous supports or dispersed within a polymer phase to form mixed matrix membranes. Consequently, this paper assesses current membrane development according to industrial feasibility targets and highlights the achievable superior separation results for ideal membrane configurations. For example, ZIF-11 is discovered to be capable of sieving H 2 from all of its larger gas counterparts at a remarkable H 2 /CO 2 selectivity of 262 and H 2 permeability of 5830 Barrer, well within the target area for efficient hydrogen production.

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Section: Introductionmentioning

confidence: 99%

Feasibility of zeolitic imidazolate framework membranes for clean energy applications

Thornton

Dubbeldam

Liu

et al. 2012

Energy Environ. Sci.

156

141

View full text Add to dashboard Cite

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“…Polyethersulfone (PES) is a good choice for integrally‐skinned asymmetric membrane preparation with desirable characteristics such as wide operating temperatures, broad pH limits, suitable strength and flexibility, appropriate flux and cheapness . Gas permeation properties of PDMS membranes have been studied by many researchers …”

Section: Introductionmentioning

confidence: 99%

PDMS coated asymmetric PES membrane for natural gas sweetening: Effect of preparation and operating parameters on performance

2014

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The present study is an attempt to investigate the effects of preparation and operation parameters on ideal and real selectivity of polydimethylsiloxane (PDMS) coated asymmetric polyethersulfone (PES) membranes for natural gas sweetening. Scanning electron microscopy (SEM) was used to study the effect of PES concentration and solvent type on membrane morphology. The effects of operating parameters on the performance of membranes were investigated by using binary CO 2 /CH 4 , H 2 S/CH 4 and ternary H 2 S/CO 2 /CH 4 gas mixtures. Higher concentrations of PES and a higher sequential coating number increase CO 2 /CH 4 selectivity and decrease CO 2 permeance. As a notable and interesting result, the membrane exhibits rubbery PDMS behaviour for H 2 S containing feeds and displays a glassy PES membrane for CO 2 /CH 4 mixed gas. An increase in the feed pressure decreases CO 2 and CH 4 permeance and increases CO 2 /CH 4 selectivity for CO 2 /CH 4 feed. For H 2 S/CH 4 and H 2 S/CO 2 /CH 4 mixed gas, enhancing the feed pressure results in higher CH 4 and lower CO 2 and H 2 S permeance and a declined CO 2 /CH 4 and H 2 S/CH 4 selectivity. Increasing temperature in binary CO 2 /CH 4 enhances CO 2 and CH 4 permeance and decreases CO 2 /CH 4 selectivity. Increasing the temperature increases CH 4 permeance and decreases H 2 S permeance for binary H 2 S/CH 4 mixture. For ternary mixture, increasing the temperature leads to a higher permeance for CO 2 and H 2 S and a lower CH 4 permeance. For binary CO 2 /CH 4 , a higher CO 2 concentration increases the membrane gas permeance and decreases CO 2 /CH 4 selectivity. Increasing the H 2 S concentration in the feed results in a reduction in gas pressure normalised flux of gases in ternary gas feed because of an increase in Flory-Huggins interaction parameter.

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“…Moreover, Kawachale et al 40 utilized the CFD technique to investigate the effect of cell geometry and operating parameters on the separation performance of a gas separation module and validated their model with the experimental data. Dal-Cin et al 41 applied the CFD modeling to develop a transport based model to simulate the gas permeation of CO 2 and N 2 through the PDMS coated membranes. Farno et al 42 investigated the separation behavior of a gas mixture containing C 3 H 8 , CH 4 and H 2 at various operating conditions through the PDMS membrane using CFD modeling.…”

Section: Introductionmentioning

confidence: 99%

A predictive mass transport model for gas separation using glassy polymer membranes

2015

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Gas separation transport modeling for PDMS coatings on PEI-PEG IPN membranes

Cited by 12 publications

References 24 publications

Feasibility of zeolitic imidazolate framework membranes for clean energy applications

Feasibility of zeolitic imidazolate framework membranes for clean energy applications

PDMS coated asymmetric PES membrane for natural gas sweetening: Effect of preparation and operating parameters on performance

A predictive mass transport model for gas separation using glassy polymer membranes

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