Separation of Volatile Organic Compounds by Pervaporation for a Binary Compound Combination: Trichloroethylene and 1,1,1-Trichloroethane

Visvanathan, C.; Basu, Biswadeep; Mora, J.C.

doi:10.1021/ie00038a035

Cited by 27 publications

(4 citation statements)

References 8 publications

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“…The permeate was cooled with liquid nitrogen, condensed in a cold trap and sampled at the same time intervals as the feed in order to measure the weight and volume. As found by other authors, 15,16 cold trapping of permeate vapour, using liquid nitrogen, proved unreliable for accurately determining the total amount of permeated component owing to the low feed concentration. Therefore, the permeation flux of water was determined from the evolution of water concentration in feed over time.…”

Section: Reagents and Membranesmentioning

confidence: 79%

Laboratory‐ and pilot plant‐scale study on the dehydration of cyclohexane by pervaporation

Ortiz

Urtiaga

Ibáñez

et al. 2005

J of Chemical Tech & Biotech

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In this work, pervaporation is applied for the dehydration of industrial cyclohexane, used as a solvent and reaction medium in the manufacture of synthetic rubbers. Working with initial concentrations of water in cyclohexane within the range of 0.090-0.110 kg m −3 , an experimental study was performed (i) in the laboratory, using a radial cell with a membrane area of 0.0178 m 2 ; and (ii) in a pilot plant located at the industrial site, with a plate-and-frame membrane module and a total membrane area of 3 m 2 . In both cases, the same pervaporation membrane, with a preferential flux of water, was used. The mass transfer coefficient was determined, together with its dependence on the hydrodynamic regime. The higher hydraulic resistance of the plate-and-frame module generated a pressure decrease that limited the feed velocity, thus increasing the mass transfer resistance of the pervaporation process in comparison with the bench-scale system.

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Section: Reagents and Membranesmentioning

confidence: 79%

Laboratory‐ and pilot plant‐scale study on the dehydration of cyclohexane by pervaporation

Ortiz

Urtiaga

Ibáñez

et al. 2005

J of Chemical Tech & Biotech

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“…Nevertheless, the high cost of activated carbon forced researchers to study the applicability of other economical and environmental friendly separation techniques. Hydrophobic pervaporation was found to be a very attractive alternative for conventional techniques, such as ozone addition/UV radiation [5,6] and reverse osmosis [7], in the VOCs removal from wastewaters, since no additives are required, and less energy is consumed rendering the operational cost relatively low [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Pervaporation performance of unfilled and filled PDMS membranes and novel SBS membranes for the removal of toluene from diluted aqueous solutions

Chovau

Dobrak

Figoli

et al. 2010

Chemical Engineering Journal

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“…Recently, pervaporation separation has become an effective process for the separation and recovery of liquid mixtures in chemical industries 1, 2. Pervaporation is potentially useful when distillation is difficult, such as for the fractionation of azeotropic mixtures, close boiling components, thermal decomposition, and isomeric mixtures, because of its energy‐saving features 3–16. Therefore, pervaporation is of growing interest for water treatment applications to remove volatile organic pollutants and for industrial applications such as wine or beer dealcoholization, juice concentration, and extraction of volatile organic compounds from various liquid media 3–16…”

Section: Introductionmentioning

confidence: 99%

Pervaporation of volatile organic compounds/water mixtures through poly(1H,1H,9H‐hexadecafluorononyl methacrylate)‐filled poly(1‐trimethylsilyl‐1‐propyne) membranes

Mishima

Nakagawa

2001

J of Applied Polymer Sci

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Poly(1-trimethylsilyl-1-propyne) (PMSP) is a glassy polymer that contains many microvoids. The permselectivity of the PMSP membrane is controlled by the microvoids, and its permeation behavior is different from rubbery polymer membranes. PMSP membrane was filled with poly(1H,1H,9H-hexadecafluorononyl methacrylate) (PHDFNMA), and the solution-diffusion mechanism during pervaporation was investigated. Separation performance was increased due to the introduced hydrophobic polymer, PHDFNMA, as compared to the PMSP membrane. For the 62 wt % PHD-FNMA-filled PMSP membrane, the permselectivity was significantly enhanced. The microvoids in the PMSP membrane play an important role in permselectivity. As the feed of ethyl butanoate (EBU) concentration increased and the EBU quantity sorbed into the PHDFNMA-filled PMSP membrane increased, the diffusion of water was prevented; in turn, the water flux decreased. At a low feed concentration, the diffusivity of the EBU molecule was much lower than that of water due to the larger molecular size of EBU. As EBU was sufficiently sorbed into the membrane, the diffusion of water was prevented by the EBU molecules; in turn, the permselectivity of EBU significantly increased. At a high-feed EBU concentration, the diffusion of water increased, and the diffusion of EBU decreased to a constant as the PHDFNMA-filled PMSP membrane was plasticized.

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Separation of Volatile Organic Compounds by Pervaporation for a Binary Compound Combination: Trichloroethylene and 1,1,1-Trichloroethane

Cited by 27 publications

References 8 publications

Laboratory‐ and pilot plant‐scale study on the dehydration of cyclohexane by pervaporation

Laboratory‐ and pilot plant‐scale study on the dehydration of cyclohexane by pervaporation

Pervaporation performance of unfilled and filled PDMS membranes and novel SBS membranes for the removal of toluene from diluted aqueous solutions

Pervaporation of volatile organic compounds/water mixtures through poly(1H,1H,9H‐hexadecafluorononyl methacrylate)‐filled poly(1‐trimethylsilyl‐1‐propyne) membranes

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