Synthesis of asymmetrical cellulose acetate/cellulose triacetate forward osmosis membrane : Optimization
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 299-304 |
Journal / Publication | Journal of the Taiwan Institute of Chemical Engineers |
Volume | 96 |
Publication status | Published - 1 Mar 2019 |
Externally published | Yes |
Link(s)
Abstract
This study aims at identifying asymmetric cellulose acetate (CA)/cellulose triacetate (CTA) forward osmosis (FO) membranes that have high water flux (J v ) and low reverse salt diffusion flux (J s ) with acetic acid to replace the 1,4-dioxane for the mixed solvent for CA/CTA dissolution. The optimum fabrication parameters for the CA/CTA FO membranes are determined by using response surface methodology with a 4 3 Box-Behnken design. Effects of weight fraction of CA (at CA/CTA = 2), spinning speed, annealing temperature and annealing time on the J v and J s are investigated. The optimum conditions to maximize the J v to 6.4 L/m 2 /h and minimize J s to 0.47 g/m 2 /h together are: 6%/3% CA/CTA, 2993 rpm spinning speed, 87.8 °C annealing temperature and 180 s annealing time. The fabricated FO membranes can reject over 99.9% heavy metal ions from feed wastewater and can be used as an effective barrier for alginate gels with easy flux recovery by ultrasound cleaning.
Research Area(s)
- Forward osmosis, Membrane fabrication, Reverse salt diffusion, Surface response methodology, Water flux
Bibliographic Note
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Citation Format(s)
Synthesis of asymmetrical cellulose acetate/cellulose triacetate forward osmosis membrane: Optimization. / Chen, Guan-Jie; Lee, Duu-Jong.
In: Journal of the Taiwan Institute of Chemical Engineers, Vol. 96, 01.03.2019, p. 299-304.
In: Journal of the Taiwan Institute of Chemical Engineers, Vol. 96, 01.03.2019, p. 299-304.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review