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

Baek, Youngbin; Kim, Cholin; Seo, Dong Kyun; Kim, Taewoo; Lee, Jeong Seok; Kim, Yong Hyup; Ahn, Kyung Hyun; Bae, Sang Seek; Lee, Sang Cheol; Lim, Jae-Lim; Lee, Kyunghyuk; Yoon, Jeyong

doi:10.1016/j.memsci.2014.02.042

Cited by 156 publications

(85 citation statements)

References 40 publications

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“…2; the water permeability increased more than twofold compared with that obtained after thermal treatment. This attained water permeability of the CNT wall membrane, which is close to 30,000 LMH bar À 1 , is more than an order of magnitude greater than the highest water permeability reported for CNT membranes (B2,400 LMH bar À 1 ) 11 .…”

Section: Resultsmentioning

confidence: 48%

“…However, the water permeance through CNT membranes [1][2][3] was initially not considerably different from that attainable using a commercial polysulfone (PSf) ultrafiltration (UF) membrane 11 , which is approximately several hundred litres per square metre per hour (LMH bar À 1 ). Only recently has a water permeability of 2,400 LMH bar À 1 been achieved 11 . This permeability is not considerably greater than the permeability that can be attained using non-CNT membranes.…”

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confidence: 99%

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A carbon nanotube wall membrane for water treatment

et al. 2015

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Various forms of carbon nanotubes have been utilized in water treatment applications. The unique characteristics of carbon nanotubes, however, have not been fully exploited for such applications. Here we exploit the characteristics and corresponding attributes of carbon nanotubes to develop a millimetre-thick ultrafiltration membrane that can provide a water permeability that approaches 30,000 l m À 2 h À 1 bar À 1 , compared with the best water permeability of 2,400 l m À 2 h À 1 bar À 1 reported for carbon nanotube membranes. The developed membrane consists only of vertically aligned carbon nanotube walls that provide 6-nm-wide inner pores and 7-nm-wide outer pores that form between the walls of the carbon nanotubes when the carbon nanotube forest is densified. The experimental results reveal that the permeance increases as the pore size decreases. The carbon nanotube walls of the membrane are observed to impede bacterial adhesion and resist biofilm formation.

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Section: Resultsmentioning

confidence: 48%

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confidence: 99%

A carbon nanotube wall membrane for water treatment

et al. 2015

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“…A lot of effort had been made to develop practical strategies for the fabrication of composite conductive membranes. To date, two main strategies-blending and surface coating-have been reported for the fabrication of composite conductive membranes [22][23][24][25]. However, for the blending strategy, the conductivity of the resultant membrane was normally limited due to the insulting nature of the non-conductive matrix material.…”

Section: Introductionmentioning

confidence: 99%

In-situ combined dual-layer CNT/PVDF membrane for electrically-enhanced fouling resistance

Wang

Liang

et al. 2015

Journal of Membrane Science

113

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“…But post-surface treatment could increase the penetration resistance leading to flux decrease. Covalent bonding of hydrophilic groups is another attempt to improve fouling resistant performance [16][17][18][19]. Addition of monofunctional structure (o-Aminobenzoic acid-triethylamine salt) into the ingredient of interfacial polymerization, then coating of cross-linked PEG can improve the flux and antifouling performance of membranes according to Ho's work [20].…”

Section: Introductionmentioning

confidence: 99%