Preparation of cellulose triacetate/cellulose acetate (CTA/CA)-based membranes for forward osmosis

Nguyen, Thi Phuong Nga; Yun, Eun-Tae; Kim, In‐Chul; Kwon, Young‐Nam

doi:10.1016/j.memsci.2013.01.027

Cited by 139 publications

(47 citation statements)

References 36 publications

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“…Specifically, peaks in 1655 cm −1 (−C_O stretching of amide), 1610 cm −1 (aromatic ring), and 1545 cm −1 (C\ \N stretching of amide) strongly suggest the likelihood that polyamide serves as the functional selective layer material [31]. In the CTA membrane sample, acetyl groups showed signals at 1738 cm −1 (− C_O), 1368 cm −1 (CH 3 ), and 1228 cm −1 (C\ \O) which confirm the CTA membrane structure [32]. The different flux and fouling behaviours of two types of membranes may be caused by surface chemical heterogeneity.…”

Section: Effect Of Membrane Selectionmentioning

confidence: 69%

Forward osmosis as a pre-treatment for treating coal seam gas associated water: Flux and fouling behaviour

et al. 2017

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Section: Effect Of Membrane Selectionmentioning

confidence: 69%

Forward osmosis as a pre-treatment for treating coal seam gas associated water: Flux and fouling behaviour

et al. 2017

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“…However, the membranes showed low water flux due to the additional resistance to water transport. Thi Phuong Nga Nguyen et al prepared CTA/CA FO membranes to enhance water flux [19], but relatively high reverse solute flux (RSF) limits the application of the membranes. It is necessary to prepare FO membranes with high water flux and salt rejection at present.…”

Section: Introductionmentioning

confidence: 99%

Preparation of modified cellulose acetate membranes using functionalized multi-walled carbon nanotubes for forward osmosis

Jin

Huang

Wang

et al. 2015

Desalination and Water Treatment

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2015): Preparation of modified cellulose acetate membranes using functionalized multi-walled carbon nanotubes for forward osmosis, Desalination and Water Treatment, A B S T R A C TNovel modified cellulose acetate (CA) membranes using functionalized multi-walled carbon nanotubes (MWCNTs) were synthesized by phase inversion via immersion precipitation technique. Carboxylated functionalized MWCNTs (F-MWCNTs) were used as additives into the casting solution of CA, 1, 4-dioxane, acetone, lactic acid, and methanol to enhance the forward osmosis (FO) membranes performance. Different contents of F-MWCNTs (0.01, 0.05, and 0.1 wt.%) were added into the casting solution. The novel synthesized CA/F-MWCNTs membranes were characterized by various methods in terms of membranes structure and surface properties, as well as FO performance, and then compared with traditional CA membrane and commercial FO membrane. The surface hydrophilicity, porosity, and tensile strength of CA/F-MWCNTs membranes were improved with the increment of the content of F-MWCNTs in the casting solution. The morphological studies showed that the addition of F-MWCNTs significantly changed the surface properties of the modified CA membranes. The FO performance was evaluated using purified water as feed solution and 1 M NaCl solution as draw solution. The CA/F-MWCNTs membranes showed higher water permeability and salt rejection in the range of 0.01-0.1 wt.% F-MWCNTs content than CA membrane and the commercial FO membrane. These encouraging results suggested that CA/F-MWCNTs membranes showed superior potential to be further developed for FO applications.

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“…Js cv st = (2) where, Js is the reverse salt flux (g/m 2 ·h), c is the NaCl concentration of the feed solution, v is the volume of the feed solution, s is the area of the effective FO membrane, and t is the running time, respectively. Characterization of Membranes.…”

Section: Methodsmentioning

confidence: 99%

“…The early study of FO membranes employed reverse osmosis membranes of hydrophilic cellulose acetate (CA) and/or cellulose triacetate (CTA) polymers, which show low permeate water flux since their porous support layer [2]. However, higher internal concentration polarization was observed as well as, which occurs within the support layer and will cause a dramatic loss in the effective osmotic driving [3].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of CA/GO Mixed Matrix Forward Osmosis Membranes

Wang¹,

Liu²,

Hou³

et al. 2016

Proceedings of the International Symposium on Mechanical Engineering and Material Science

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Preparation of cellulose triacetate/cellulose acetate (CTA/CA)-based membranes for forward osmosis

Cited by 139 publications

References 36 publications

Forward osmosis as a pre-treatment for treating coal seam gas associated water: Flux and fouling behaviour

Forward osmosis as a pre-treatment for treating coal seam gas associated water: Flux and fouling behaviour

Preparation of modified cellulose acetate membranes using functionalized multi-walled carbon nanotubes for forward osmosis

Preparation and Characterization of CA/GO Mixed Matrix Forward Osmosis Membranes

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