Effect of hydrophobic surface modifying macromolecules on differently produced PVDF membranes for direct contact membrane distillation

被引：70

作者：

Prince, J. A. ^{[1
]}

Rana, D. ^{[2
]}

Singh, G. ^{[1
]}

Matsuura, T. ^{[2
]}

Kai, T. Jun ^{[1
]}

Shanmugasundaram, T. S. ^{[1
]}

机构：

[1] Ngee Ann Polytech, Environm & Water Technol Ctr Innovat, Singapore 599489, Singapore

[2] Univ Ottawa, Dept Chem & Biol Engn, Ind Membrane Res Inst, Ottawa, ON K1N 6N5, Canada

来源：

CHEMICAL ENGINEERING JOURNAL | 2014年 / 242卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Hydrophobic surface modifying macromolecules; Poly(vinylidene fluoride); Phase inversion; Electrospun nanofiber; Direct contact membrane distillation; Sea water desalination; POLYETHERSULFONE MEMBRANES; POLY(VINYLIDENE FLUORIDE); COMPOSITE MEMBRANES; MASS-TRANSFER; DESALINATION; PERFORMANCE; PROTECTION; HEAT;

D O I：

10.1016/j.cej.2013.11.039

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Hydrophobic surface modifying macromolecules (SMM) and pore forming poly(vinyl pyrrolidone) (PVP) were added to fabricate poly(vinylidene fluoride) (PVDF)-PVP-hydrophobic SMM composite membranes through the phase inversion process. The composite PVDF-SMM nano-fibers membranes were also fabricated. The SMM was characterized in details by nuclear magnetic resonance spectroscopy. The membranes were characterized using the contact angle, liquid entry pressure of water, scanning electron microscopy, and porometry measurements. Both cast and nanofiber membranes were tested by direct contact membrane distillation (DCMD) with feed 3.5 wt% NaCl solution. Finally, the membrane performance of cast and nanofiber membranes was compared. The prepared hydrophobic SMM modified PVDF electro-spun nano-fibers membranes when combined with the casted membranes are very promising in DCMD for sea water desalination after running for 48 h operational timeframe. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：387 / 396

页数：10

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