High performance and antifouling vertically aligned carbon nanotube membrane for water purification

被引：126

作者：

Baek, Youngbin ^{[1
,2
]}

Kim, Cholin ^{[1
,2
]}

Seo, Dong Kyun ^{[3
]}

Kim, Taewoo ^{[3
]}

Lee, Jeong Seok ^{[3
]}

Kim, Yong Hyup ^{[3
]}

Ahn, Kyung Hyun ^{[2
]}

Bae, Sang Seek ^{[4
]}

Lee, Sang Cheol ^{[4
]}

Lim, Jaelim ^{[5
]}

Lee, Kyunghyuk ^{[5
]}

Yoon, Jeyong ^{[1
,2
]}

机构：

[1] Seoul Natl Univ, Sch Chem & Biol Engn, World Class Univ WCU Program Chem Convergence Ene, Inst Chem Proc, Seoul 151742, South Korea

[2] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151742, South Korea

[3] Seoul Natl Univ, Sch Mech & Aerosp Engn, Seoul 151742, South Korea

[4] Korea Water Resources Corp K Water, Dept Water Supply Technol, Taejon 306711, South Korea

[5] K Water Korea Water Resources Corp, Taejon 306711, South Korea

来源：

JOURNAL OF MEMBRANE SCIENCE | 2014年 / 460卷

关键词：

Vertically aligned carbon nanotube membrane; High water flux; Antifouling property; Water purification; Ultrafiltration membrane; HYDROPHILICITY; NANOFLUIDICS; DESALINATION; TRANSPORT; FLOW;

D O I：

10.1016/j.memsci.2014.02.042

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A vertically aligned carbon nanotube (VA CNT) membrane created from the successful fusion of nanotechnology and membrane technology has been stated to be a next generation membrane due to its fast water transport and antimicrobial properties. Although previous studies of the VA CNT membrane reported the potential for fast water transport or desalination by molecular dynamics simulation, this study is the first to report on the feasibility of using the VA CNT membrane for water purification. The VA CNT membrane (4.8 nm of pore diameter and 6.8 x 10(10) #/cm(2) of pore density) was fabricated and its flux, rejection performance, and membrane biofouling tendency were evaluated in comparison to the commercial ultrafiltration (UF) membrane. The VA CNT membrane appeared to have a water flux approximately three times higher than the UF membrane and water transport approximately 70,000 times faster than conventional no slip flow. This higher flux was peculiarly observed in water, the most hydrophilic solvent, while other solvents showed that permeate flux decreased with higher viscosity. The rejection property of the VA CNT membrane as examined by the MWCO measurement was similar to the commercial UF membrane. Additionally, the VA CNT membrane showed better biofouling resistance with approximately 15% less permeate flux reduction and 2 log less bacterial attachment than the UF membrane. This study reports the high potential of the VA CNT membrane with antifouling property in the water purification process. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：171 / 177

页数：7

共 49 条

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