Polyelectrolyte complexes/silica hybrid hollow fiber membrane for fusel oils pervaporation dehydration processes

Chen, Kai-Fan; Zheng, Pei-Yao; Wang, Naixin; An, Quan‐Fu; Lee, Kueir‐Rarn

doi:10.1016/j.memsci.2017.10.002

Cited by 12 publications

(2 citation statements)

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“…At a water content of 10%, the flux of the membrane was 495 g/(m 2 ·h) and the separation factor was 904 at 70 °C. Chen et al [ 23 ] prepared polyelectrolyte complex/silica (PEC/SiO 2 ) hybrid hollow fiber membranes for the dehydration of fusel oils. The results showed that the membranes had a flux of 1332 g/(m 2 ·h) and a water content in the permeate of 99.0 wt.% for the dehydration of fusel oils at 60 °C.…”

Section: Introductionmentioning

confidence: 99%

“…Zhang et al [22] prepared a ceramic cavities fiber membrane with poly4-styrene sulfonic acid and chitosan as raw materials through a multilayer assembly process and performed pervaporation separation of the aqueous ethanol solution. At a water content of 10%, the flux of the membrane was 495 g/(m 2 •h) and the separation factor was 904 at 70 • C. Chen et al [23] prepared polyelectrolyte complex/silica (PEC/SiO 2 ) hybrid hollow fiber membranes for the dehydration of fusel oils. The results showed that the membranes had a flux of 1332 g/(m 2 •h) and a water content in the permeate of 99.0 wt.% for the dehydration of fusel oils at 60 • C. Tong et al [24] exploited the synergistic effect of polyelectrolyte (PEL) and sulfonated graphene oxide (SGO) to fabricate novel composite membranes and achieve the ultrafast transport of water molecules in isopropanol pervaporation dehydration.…”

Section: Introductionmentioning

confidence: 99%

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Dehydration of Organic Solvents from Ternary Mixtures Containing Toluene/Methanol/Water by Pervaporation

Qiao,

Xu,

et al. 2024

Membranes

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The separation of a toluene/methanol/water ternary mixture is a difficult task due to the toluene/water and toluene/methanol azeotropes. In this article, low-energy pervaporation is proposed for the separation of the ternary azeotrope toluene–methanol–water. This work investigates the effects of feed temperature, feed flow rate, and vacuum on pervaporation and compares the energy consumption of pervaporation with that of distillation. The results showed that at the optimized flow rate of 50 L/h and a permeate side vacuum of 60 kPa at 50 °C, the water and methanol content in the permeate was about 63.2 wt.% and 36.8 wt.%, respectively, the water/ methanol separation factor was 24.04, the permeate flux was 510.7 g/m2·h, the water content in the feed out was reduced from 2.5 wt.% to less than 0.66 wt.%, and the dehydration of toluene methanol could be realized. Without taking into account the energy consumption of pumps and other power equipment, pervaporation requires an energy consumption of 43.53 kW·h to treat 1 ton of raw material, while the energy consumption of distillation to treat 1 ton of raw material is about 261.5 kW·h. Compared to the existing distillation process, the pervaporation process consumes much less energy (about one-sixth of the energy consumption of distillation). There is almost no effect on the surface morphology and chemical composition of the membrane before and after use. The method provides an effective reference for the dehydration of organic solvents from ternary mixtures containing toluene/methanol/water.

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Section: Introductionmentioning

confidence: 99%