Microporous polypropylene hollow fiber membranes Part II. Pervaporation separation of water/ethanol mixtures by the poly(acrylic acid) grafted membranes

Xu, Zhi‐Kang; Dai, Qiliang; Liu, Zhen-Mei; Kou, Rui-Qiang; Xu, Yuan

doi:10.1016/s0376-7388(02)00536-7

Cited by 64 publications

(17 citation statements)

References 26 publications

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“…Several methods have been used to prepare HF composite membrane such as dip-coating, interfacial polymerization and grafting methods [2, 16,21,26,27].…”

Section: Introductionmentioning

confidence: 99%

Preparation of PFSA/PSf hollow fiber composite membranes with recovered PFSA for the pervaporation separation of EtOH/H2O

Lang

Tong

et al. 2010

Sci. China Chem.

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Perfluorosulfonic acid/Polysulfone(PFSA/PSf) hollow fiber composite membranes have been prepared by dip-coating method using PSf ultrafiltration (UF) membrane as substrate with recovered PFSA. The composite membranes were applied to the pervaporation separation of 95% ethanol (EtOH)/H 2 O mixture. SEM images show that the thickness of the PFSA skin layer of the composite membranes is about 2 μm, much thinner than those of other PFSA composite membranes revealed in the literatures. Effects of annealing temperature, coating solution concentration and counter-ions of PFSA on the pervaporation performances of the composite membranes were investigated. The total flux decreases and separation factor increases with the increase of annealing temperature. The highest permeation flux of 3230 g m −2 h −1 and a separation factor of 5.4 is obtained for the composite membrane annealed at 80°C. The lowest permeation flux of 396 g m −2 h −1 and a separation factor of 27.7 is obtained for the composite membrane annealed at 160°C. The permeation performances of the PFSA/PSf composite membrane are evidently influenced by the counter-ions of PFSA. The flux sequence of the PFSA/PSf composite membranes with different counter-ions is H + >Li + >Ca 2+ >Mg 2+ >Na + >K + >Ba 2+ >Fe 3+ >Al 3+ , and the separation factor sequence is H +

Na + >K + . There are very little variations of ΔE app values between the composite membranes with three divalent counter-ions (Mg 2+ , Ca 2+ and Ba 2+ ), and the ΔE app values of the composite membranes with two trivalent counter-ions (Fe 3+ and Al 3+ ) are relatively high. pervaporation, hollow fiber composite membrane, perfluorslulfonic acid (PFSA), ethanol (EtOH)/H 2 O mixture

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“…Several methods have been used to prepare HF composite membrane such as dip-coating, interfacial polymerization and grafting methods [2, 16,21,26,27].…”

Section: Introductionmentioning

confidence: 99%

Preparation of PFSA/PSf hollow fiber composite membranes with recovered PFSA for the pervaporation separation of EtOH/H2O

Lang

Tong

et al. 2010

Sci. China Chem.

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“…IPA 88.5% 761 (93) 15.3 (4.2) Cellulose acetate (Seok et al, 1987) 25 IPA 85% 360 (115.3) 7 (2) EtOH 85% 331 (107.5) 5 (3) PAA grafted polypropylene (Xu et al, 2003) 60 EtOH 90% 100 (6.5) 8.5 (4) Anion-exchange grafted polyethylene (Kujawski and Krajewski, 2004) 35 IPA 96% -56 Chitosan/cellulose acetate composite (Tsai et al, 2004) 25 defect-free hollow fiber membranes for pervaporation (Feng and Huang, 1997). Tsuyumoto et al (1997) studied the performance of a pervaporation plant using modified polyacrylonitrile hollow fiber membranes for the dehydration of ethanol (EtOH).…”

Section: Introductionmentioning

confidence: 99%

“…They found that the pervaporation plant using hollow fibers not only has the economical superiority over the traditional distillation and the plant utilizing GFT flat membranes, but also saves membrane cost and space. Hollow fiber membranes made from others materials such as Nafion 811 (Cabasso et al, 1986), cellulose acetate (Seok et al, 1987), polypropylene grafted with poly(acrylic acid) (Xu et al, 2003), grafted anion-exchange polyethylene (Kujawski and Krajewski, 2004), cellulose acetate/chitosan (Tsai et al, 2004) have been studied for the pervaporation dehydration of aqueous EtOH mixtures or aqueous IPA mixtures. Table 1 summarizes their separation performance in terms of flux/permeance and separation factor/selectivity.…”

Section: Introductionmentioning

confidence: 99%

The development of high performance P84 co-polyimide hollow fibers for pervaporation dehydration of isopropanol

Liu

Qiao

Chung

2005

Chemical Engineering Science

105

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“…There are many ways to modify the asymmetric hollow fiber membranes to get highly separation performances such as dipcoating [6][7][8], additive addition [9,10], heat-treatment [11][12][13][14], blending [15], cross-linking [13] and grafting [16]. No matter what way to modify the hollow fiber membranes, a dense with defect-free skin layer is necessary.…”

Section: Introductionmentioning

confidence: 99%

Characterization and pervaporation dehydration of heat-treatment PAN hollow fiber membranes

Tsai

Lee

et al. 2011

Journal of Membrane Science

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Microporous polypropylene hollow fiber membranes Part II. Pervaporation separation of water/ethanol mixtures by the poly(acrylic acid) grafted membranes

Cited by 64 publications

References 26 publications

Preparation of PFSA/PSf hollow fiber composite membranes with recovered PFSA for the pervaporation separation of EtOH/H2O

Preparation of PFSA/PSf hollow fiber composite membranes with recovered PFSA for the pervaporation separation of EtOH/H2O

The development of high performance P84 co-polyimide hollow fibers for pervaporation dehydration of isopropanol

Characterization and pervaporation dehydration of heat-treatment PAN hollow fiber membranes

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