Effect of water in ionic liquid on the separation performance of supported ionic liquid membrane for CO2/N2

Zhao, Wei; He, Gaohong; Zhang, Lingling; Ju, Jia; Dou, Haiyang; Nie, Fei; Li, Cuina; Liu, Hongjing

doi:10.1016/j.memsci.2010.01.002

Cited by 103 publications

(52 citation statements)

References 29 publications

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“…Nevertheless, it was demonstrated that the presence of at least a small portion of water could enhance selectivity, while after reaching a certain level it reduced the separation efficiency. Furthermore, tests indicated that membrane stability was not independent of the water content, without which they could not reliably operate for a long time [104]. Neves 6 ] ionic liquid based membranes.…”

Section: Zhao Et Al Investigated the Role Of Water Content On The Pementioning

confidence: 99%

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Biohydrogen purification by membranes: An overview on the operational conditions affecting the performance of non-porous, polymeric and ionic liquid based gas separation membranes

Bakonyi

Nemestóthy

Bélafi–Bakó

2013

International Journal of Hydrogen Energy

145

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Membrane Separation Polymer Ionic liquidIntegrated system a b s t r a c t Many types of membranes are available to enrich hydrogen. Nevertheless, there are some with special potential for biohydrogen purification such as the non-porous, polymeric and ionic liquid based membranes. The attractiveness of these membranes comes from the fact that they can be employed nearly under the conditions where biohydrogen formation taking place. Therefore, they appear as promising candidates to be coupled with hydrogen producing bioreactors and hence giving the chance for in situ biohydrogen concentration.It is known that the feasibility and efficiency of membrane technology e beside material selection and module design e significantly depend on the separation circumstances.Thus, the operation of membranes is a key issue and the most important factors to be considered for gas purification are the composition of gas to be separated, the pressure and temperature applied. The scope of this study is to give a comprehensive overview on the recent applications of non-porous, polymeric and ionic liquid supported membranes for biohydrogen recovery, placing emphasis on the operational conditions affecting membrane's behavior and performance. Furthermore, a novel concept for integrated biohydrogen production and purification using gas separation membranes is demonstrated and discussed.

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Section: Zhao Et Al Investigated the Role Of Water Content On The Pementioning

confidence: 99%

“…It was found that at certain water content of the gas mixture fed to the membrane, increasing feed pressure could yield higher permeabilities for CO 2 and N 2 gases [104].…”

Section: 2mentioning

confidence: 99%

Biohydrogen purification by membranes: An overview on the operational conditions affecting the performance of non-porous, polymeric and ionic liquid based gas separation membranes

Bakonyi

Nemestóthy

Bélafi–Bakó

2013

International Journal of Hydrogen Energy

145

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“…The greatest advantage of the ILs is their practically zero vapour pressure compared with the commonly used volatile organic solvents. Actually the ILs can be designed for specific proposals, and their applications are extended to different fields: media for green synthesis [10][11][12], CO 2 capture [13][14][15][16][17][18], removal of fermentation products [19,20] and pharmaceuticals [21], and as solvents or extractants for liquid-liquid extraction [21][22][23][24][25] and hence, for supported liquid membrane processes [26]. This work proposes an alternative solution to chloride ions reduction from brackish water.…”

Section: Introductionmentioning

confidence: 99%

Ionic liquids as a carrier for chloride reduction from brackish water using hollow fiber renewal liquid membrane

Fortuny¹,

Coll²,

Sastre³

2014

Desalination

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High concentration of chloride ions in continental water is a great problem for the exploitation of these natural resources. In industry, the use of this water involves additional conditioning steps. For drinking water and irrigation uses, the Cl- must be reduced by conventional water treatment processes, like ion exchange or reverse osmosis, but for large scale production these techniques could be very expensive due to resin regeneration or energy costs. The possibility of using supported liquid membranes (SLM) with ionic liquids (IL), Aliquat 336, Cyphos IL 101 and Cyphos IL 167, as carriers to exchange Cl- for HCO3- anion has been shown to work. The reversibility of this anion exchange was corroborated by solvent extraction experiments and implemented in flat sheet supported liquid membrane (FSSLM) and hollow fiber renewal liquid membrane technologies (HFRLM). About double transport values have been obtained in HFRLM compared to SLM and 1 h is the time enough to reduce the chloride concentration up to 250 mg/L using HFRLM at the best experimental condition. The results obtained allow us to be optimistic about the implementation of this technology on a large scale to chloride reduction in drinking water when the source is inadequate for direct use. (C) 2013 Elsevier B.V. All rights reserved.Peer ReviewedPreprin

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“…A chemical enhancement of the CO 2 absorption as possible energy saving have been observed compared ionic liquids to amine solutions used for absorption of carbon dioxide. [24][25][26] Taking into account high solubility of CO 2 in ionic liquid with excellent solvent properties, such as negligible volatility and low desorption temperature, a kind of lipophilic ionic liquid, 1 octyl-3 methyl imidazole six phosphate fluoride[C 8 min][PF 6 ], was dispersed into Triehtanolamine aqueous solution forming oil-in-water (O=W) emulsion, in which ionic liquid was dispersed-phase and triehtanolamine aqueous was continuous phase. The main objectives of the present study are to research the feasibility that dispersed ionic liquids enhance mass transfer of CO 2 in gas-liquid, and the effects of operation parameters on CO 2 absorption.…”

Section: Introductionmentioning

confidence: 99%

Improving Mass Transfer in Gas-Liquid by Ionic Liquids Dispersion

Liu

Zhang

et al. 2012

Journal of Dispersion Science and Technology

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This study investigates effects of dispersed ionic liquids on chemical absorption of CO 2 in alkanolamine aqueous solution. Oil-in-water emulsion has been prepared, whose continuous phase is trethanol amine aqueous solution, and dispersed phase is an ionic liquid, 1-octyl-3methyl imidazole six phosphate fluoride. The morphololgy of dispersion has been observed by visual method. Absorption rates are linearly fitted based on experimental data. Results show that a mass transfer enhancement has been realized by ionic liquids dispersion. The collaborative action of hydrodynamic effect and shuttle effect is proved to be the main mechanism that ionic liquids dispersion enhances gas absorption. The research indicates that dispersed ionic liquids can bring some advantages, higher absorption rate, lower corrosion for equipment, and higher regeneration efficiencies.

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Effect of water in ionic liquid on the separation performance of supported ionic liquid membrane for CO2/N2

Cited by 103 publications

References 29 publications

Biohydrogen purification by membranes: An overview on the operational conditions affecting the performance of non-porous, polymeric and ionic liquid based gas separation membranes

Biohydrogen purification by membranes: An overview on the operational conditions affecting the performance of non-porous, polymeric and ionic liquid based gas separation membranes

Ionic liquids as a carrier for chloride reduction from brackish water using hollow fiber renewal liquid membrane

Improving Mass Transfer in Gas-Liquid by Ionic Liquids Dispersion

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