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Author

Kwon, Young-Nam
Superior Membrane-based Advanced Research & Technology (SMART) Lab
Research Interests
  • Membrane, Reverse(Forward) osmosis, Membrane distillation, Hydrate-induced ice desalination

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

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Title
Preparation of cellulose triacetate/cellulose acetate (CTA/CA)-based membranes for forward osmosis
Author
Thi Phuong Nga NguyenYun, Eun-TaeKim, In-ChulKwon, Young-Nam
Keywords
Annealing temperatures; Casting thickness; Cellulose acetates; Cellulose triacetate; Commercial membranes; Evaporation time; Forward osmosis; Immersion precipitation; Membrane performance; Preparation conditions; Salt resistance; Smooth surface; Substrate types; Water flux
Issue Date
201304
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF MEMBRANE SCIENCE, v.433, no., pp.49 - 59
Abstract
Cellulose triacetate/cellulose acetate (CTA/CA)-based membranes for forward osmosis (FO) were prepared by immersion precipitation. Casting composition and preparation conditions 1,4-dioxane/acetone ratio, CTA/CA ratio, substrate type, casting thickness, evaporation time and annealing temperature - were tested for their effects on formation and subsequent performance of membranes. Membranes were characterized by various methods, and their performances were tested against commercially available membranes. The FO membrane prepared under optimized composition and conditions had a smooth surface and showed higher water flux and salt resistance than the commercial membranes. Annealing improved the membrane performance by removing residual additives and solvents. The computerized image processing of optical microscopy images was shown to be useful for assessing the membrane substrates.
URI
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DOI
http://dx.doi.org/10.1016/j.memsci.2013.01.027
ISSN
0376-7388
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UEE_Journal Papers

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