Novel thin nanocomposite RO membranes for chlorine resistance

Kim, Pil Joo; Hyeon, Dong Hun; Chun, Jeong Hwan; Chun, Byung Hee; Kim, Sung Hyun

doi:10.1080/19443994.2013.780994

Cited by 86 publications

(33 citation statements)

References 20 publications

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“…5, due to the existence of amphiphilic GO and hydrophilic Cs on the modified membrane surface. Several groups reported similar results when using Cs or GO for membrane surface modification [7,32,33,35].…”

Section: Membrane Surface Hydrophilicitysupporting

confidence: 63%

“…The structuring of GO as a surface modifier leads to a significant membrane enhancement. It was reported that the modified aGO/GO/ sulfonated poly (arylene ether sulfone) (aPES) membrane rejected 98.4% of NaCl with water flux of 28 L/m 2 h, which was greater than the pristine aPES (94.3%) and PA (98%) membranes [33]. A similar technique was applied by Choi et al on a PA TFC membrane, in which the LbL-SA method was utilized to introduce aGO and GO multilayers into the PA (TFC) membrane surface.…”

mentioning

confidence: 98%

“…Secondly, GO can modify the surface of membranes noncovalently using a layer by layer self-assembly (LbL-SA) approach, either through bridging materials like amino GO (aGO) or titanium dioxide (TiO 2 ) or directly, based on the membrane surface charge [33][34][35]. The structuring of GO as a surface modifier leads to a significant membrane enhancement.…”

mentioning

confidence: 99%

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Improving the fouling resistance of brackish water membranes via surface modification with graphene oxide functionalized chitosan

et al. 2015

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Section: Membrane Surface Hydrophilicitysupporting

confidence: 63%

mentioning

confidence: 98%

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Improving the fouling resistance of brackish water membranes via surface modification with graphene oxide functionalized chitosan

et al. 2015

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“…These membranes displayed a high salt exclusion rate (99.9%) and water ux (36.1 kg m À2 h À1 ). Depending on LBL assembled method, Kim et al 120 produced aPES/GO/aminated GO nanocomposite membranes, and authors found that the prepared GO composite membrane shows an excellent salt rejection of 98.4% compared to the pure aPES membrane (94.3%) using a 32 000 ppm NaCl solution in feed side. In this work, Kim and co-workers 120 also found the water ux of the aPES/GO/aGO membrane is relatively low in a reverse osmosis (RO) process because of the existence of nanoparticle and sulfonated poly material.…”

Section: 115mentioning

confidence: 99%

Separation and purification using GO and r-GO membranes

et al. 2018

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Many materials with varied characteristics have been used for water purification and separation applications. Recently discovered graphene oxide (GO), a two-dimensional derivative of graphene has been considered as a promising membrane material for water purification due to its excellent hydrophilicity, high water permeability, and excellent ionic/molecular separation properties. This review is focussed on the possible versatile applicability of GO membranes. It is also known that selective reduction of GO results in membranes with a pore size of $0.35 nm, ideally suited for desalination applications. This article presents the applicability of graphene-based membranes for multiple separation applications. This is indeed the first review article outlining a comparison of GO and r-GO membranes and discussing the suitability for applications based on the porosity of the membranes.

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“…This behavior finds an explanation if the interaction between the ions in solution and the negative charged surface of the GO membrane is taken into account together with the fact that the membrane is able to block ions and molecules having a hydrated radius larger than the pores and channel dimension. Kim et al [70] tested a Sulfonated poly(arylene ether sulfone) membrane coated with a structure of many GO and aminated GO layers, showing a high salt rejection (above 98%), higher than the membrane without GO (94% salt rejection). This work confirms that the presence of a GO coating on a support membrane can further enhance the filtration properties of the support membrane.…”

Section: Experimental Examples Of Desalination Bymentioning

confidence: 99%

Graphene-Based Membrane Technology: Reaching Out to the Oil and Gas Industry

Castro¹,

Cocuzza

Lamberti

et al. 2018

Geofluids

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This paper presents a critical review and the state of the art of graphene porous membranes, a brand-new technology and backdrop to discuss its potential application for efficient water desalination in low salinity water injection (LSWI). LSWI technology consists in injecting designed, adequately modified, filtered water to maximize oil production. To this end, desalination technologies already available can be further optimized, for example, via graphene membranes, to achieve greater efficiency in water-oil displacement. Theoretical and experimental applications of graphene porous membranes in water desalination have shown promising results over the last 5-6 years. Needless to say, improvements are still needed before graphene porous membranes become readily available. However, the present work simply sets out to demonstrate, at least in principle, the practical potential graphene membranes would have in hydrocarbon recovery processes.

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Novel thin nanocomposite RO membranes for chlorine resistance

Cited by 86 publications

References 20 publications

Improving the fouling resistance of brackish water membranes via surface modification with graphene oxide functionalized chitosan

Improving the fouling resistance of brackish water membranes via surface modification with graphene oxide functionalized chitosan

Separation and purification using GO and r-GO membranes

Graphene-Based Membrane Technology: Reaching Out to the Oil and Gas Industry

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