Synthesis of asymmetrical cellulose acetate/cellulose triacetate forward osmosis membrane: Optimization

Guan-Jie Chen; Duu-Jong Lee

doi:10.1016/j.jtice.2018.10.031

Synthesis of asymmetrical cellulose acetate/cellulose triacetate forward osmosis membrane: Optimization

Guan-Jie Chen
, Duu-Jong Lee^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

31 Citations (Scopus)

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.

Original language	English
Pages (from-to)	299-304
Journal	Journal of the Taiwan Institute of Chemical Engineers
Volume	96
DOIs	https://doi.org/10.1016/j.jtice.2018.10.031
Publication status	Published - 1 Mar 2019
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation

Research Keywords

Forward osmosis
Membrane fabrication
Reverse salt diffusion
Surface response methodology
Water flux

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10.1016/j.jtice.2018.10.031

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title = "Synthesis of asymmetrical cellulose acetate/cellulose triacetate forward osmosis membrane: Optimization",

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.",

keywords = "Forward osmosis, Membrane fabrication, Reverse salt diffusion, Surface response methodology, Water flux",

author = "Guan-Jie Chen and Duu-Jong Lee",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

year = "2019",

month = mar,

day = "1",

doi = "10.1016/j.jtice.2018.10.031",

language = "English",

volume = "96",

pages = "299--304",

journal = "Journal of the Taiwan Institute of Chemical Engineers",

issn = "1876-1070",

publisher = "Taiwan Institute of Chemical Engineers",

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TY - JOUR

T1 - Synthesis of asymmetrical cellulose acetate/cellulose triacetate forward osmosis membrane

T2 - Optimization

AU - Chen, Guan-Jie

AU - Lee, Duu-Jong

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2019/3/1

Y1 - 2019/3/1

N2 - 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.

AB - 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.

KW - Forward osmosis

KW - Membrane fabrication

KW - Reverse salt diffusion

KW - Surface response methodology

KW - Water flux

UR - https://www.scopus.com/pages/publications/85057400037

UR - https://www.scopus.com/pages/publications/85057400037#tab=impact

U2 - 10.1016/j.jtice.2018.10.031

DO - 10.1016/j.jtice.2018.10.031

M3 - RGC 21 - Publication in refereed journal

SN - 1876-1070

VL - 96

SP - 299

EP - 304

JO - Journal of the Taiwan Institute of Chemical Engineers

JF - Journal of the Taiwan Institute of Chemical Engineers

ER -

Synthesis of asymmetrical cellulose acetate/cellulose triacetate forward osmosis membrane: Optimization

Abstract

Bibliographical note

UN SDGs

Research Keywords

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