Pervaporation of trace chlorinated organics from water through irradiated polyethylene membrane

Lee, G.T.; Krovvidi, K.R.; Greenberg, David B.

doi:10.1016/s0376-7388(00)80867-4

Cited by 20 publications

(3 citation statements)

References 27 publications

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“…Most of the published literature on PV deals with removal of an organic from its aqueous mixtures (Lee et al, 1989a;Lee et al, 1989b;Kaschemekat et al, 1988) or dehydration of an organic (Koops et al, 1993;Yoshikawa et al, 1984;Schroeter et al, 1991). For selective permeation of an organic component, an organophilic membrane is considered.…”

Section: Introductionmentioning

confidence: 99%

Development of New Synthetic Membranes for Separation of Benzene−Cyclohexane Mixtures by Pervaporation: A Solubility Parameter Approach

Ray

Sawant

Joshi

et al. 1997

Ind. Eng. Chem. Res.

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Pervaporative separation of benzene from its mixture with cyclohexane over the entire concentration range 0-100% benzene was studied using three copolymer membranes of acrylonitrile. The other monomers in the copolymers were selected on the basis of their solubility parameter values relative to those of benzene and cyclohexane. These were styrene, methyl methacrylate, and vinyl acetate. For each copolymer of acrylonitrile three different membranes with different copolymer compositions were prepared. Copolymers of acrylonitrile with methyl methacrylate and vinyl acetate showed good selectivity and moderate flux (0.075 kg/(m 2 h) and 60-70 with a membrane of 10 µm thickness for a feed mixture containing 5% benzene). A copolymer of acrylonitrile with styrene showed comparatively higher flux but lower selectivity. The selectivities obtained with these copolymers are better than those reported in the literature

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Section: Introductionmentioning

confidence: 99%

Development of New Synthetic Membranes for Separation of Benzene−Cyclohexane Mixtures by Pervaporation: A Solubility Parameter Approach

Ray

Sawant

Joshi

et al. 1997

Ind. Eng. Chem. Res.

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“…The elimination of organic substances from aqueous solutions is particularly advantageous for the recycling of contaminated water and valorizing organic substances. In the environmental industry, selective removal of VOCs by pervaporation, such as aliphatic and aromatic hydrocarbons, as well as oxygenates, chlorinated and sulfured hydrocarbons dissolved in water, is a challenge for researchers [20,[31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]. A literature search revealed a very small number of studies on the extraction by pervaporation of liquid organic pollutant mixtures released by industry containing aromatics, aliphatics, organohalides, organosulfides, and oxygenated organic compounds from supersaturated aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Extraction of Organic Volatile Pollutants in Over-Saturated Water by Pervaporation Technique Using a Poly (Dimethylsiloxane)-Based Sealer as a Membrane

Alharbi

Saeed

Al–Warthan

et al. 2021

Water

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SILICONE1200 is an inexpensive domestic poly (dimethylsiloxane)-based sealer that was used in this study to remove volatile organic compounds from over-saturated water using the pervaporation technique. A series of volatile organic liquid compounds representing an important part of polluting organic products released every day in water were chosen for this study. These products were alkyl halides (chloroform), aromatics (toluene), aliphatic hydrocarbons (heptanes), ketones and aldehydes (butanone), and organosulfides (thiophene). The mass transfer of these compounds and their mixtures through the SILICONE1200 membrane was assessed to predict the results of the separation process. The results indicate that the mechanism of diffusion obeyed a Fickian model. Different parameters affecting the pervaporation results, such as the membrane thickness, stirring rate, and temperature, were examined to determine the optimal conditions in terms of the total flux and selectivity. The optimized parameters were then applied to the separation of an organic mixture from polluted water using the dynamic pervaporation process with promising results.

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“…In the field of pervaporation separation of azeotropic mixtures, several research reports for the removal of organics from aqueous solutions [14,15] are available. The selection of polymer blend membrane as a novel material for the pervaporation separation process is worth probing one.…”

Section: Introductionmentioning

confidence: 99%

Polychloroprene Rubber/Reduced Graphene Oxide (RGO) Nanomembranes for Pervaporation Separation of Azeotropic Mixtures

George¹,

Maya²,

Jose³

et al. 2014

J. Memb. Separ. Tech.

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Chloroprene rubber is a high performance elastomer with remarkable ageing, heat and oil resistance. A new class of elastomeric nanocomposite was prepared by incorporating reduced graphene oxide (RGO) into chloroprene rubber (CR). RGO is synthesised from natural graphite, through GO route via Hummer's method. This paper focuses on the influence of reduced graphene oxide on chloroprene rubber based elastomeric composites and their pervaporation separation of azeotropic liquid mixtures. The effect of concentration of RGO on separation factor, pervaporation separation index (PSI) and flux of the membranes were analysed. Chloroprene loaded with 0.9 phr (parts per hundred rubber) RGO shows an improved permeation rate among all other membranes while chloroform/acetone (80/20) azeotropic liquid mixture was used as feed solution. Flux increases with increasing the concentration of filler, reaches an optimum value and then decreases. Interestingly PSI also shows similar trend.

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Pervaporation of trace chlorinated organics from water through irradiated polyethylene membrane

Cited by 20 publications

References 27 publications

Development of New Synthetic Membranes for Separation of Benzene−Cyclohexane Mixtures by Pervaporation: A Solubility Parameter Approach

Development of New Synthetic Membranes for Separation of Benzene−Cyclohexane Mixtures by Pervaporation: A Solubility Parameter Approach

Extraction of Organic Volatile Pollutants in Over-Saturated Water by Pervaporation Technique Using a Poly (Dimethylsiloxane)-Based Sealer as a Membrane

Polychloroprene Rubber/Reduced Graphene Oxide (RGO) Nanomembranes for Pervaporation Separation of Azeotropic Mixtures

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