TY - JOUR
T1 - Phenol Removal from Water by Polyamide and AgCl Mineralized Thin-Film Composite Forward Osmosis Membranes
AU - Huang, Yangbo
AU - Cay-Durgun, Pinar
AU - Lai, Tianmiao
AU - Yu, Ping
AU - Thomas, Marylaura
N1 - Funding Information:
The authors gratefully acknowledge the China Scholarship Council. We gratefully acknowledge Margarita Judith from Dr. Jerry Lin’s lab at Arizona State University for the phenol concentration determination. P.C.-D. is supported by the National Science Foundation through a CAREER Award CBET-1254215 and the Nanotechnology Enabled Water Treatment (NEWT) Engineering Research Center (ERC-1449500).
Publisher Copyright:
Copyright © 2018 American Chemical Society.
PY - 2018/5/23
Y1 - 2018/5/23
N2 - This study systematically investigated phenol removal from water and phenol fouling of membranes in forward osmosis (FO) using thin-film composite (TFC) polyamide and silver chloride (AgCl) mineralized thin-film composite (MTFC) membranes. The influence of operating parameters (membrane orientation, phenol concentration, draw solution concentration, pH, and ionic strength) on phenol rejection and phenol adsorption to the membrane was investigated to elucidate the phenol transport behaviors in the FO process. Overall, phenol rejection improved with increased draw solution concentration or feed solution pH. At a feed solution pH of 11, TFC membranes exhibited their highest phenol rejection of 97.0% and MTFC membranes exhibited their highest phenol rejection of 98.8%. Phenol adsorption on the membrane surface may be related to the solute hydrophobic character, electrostatic interaction, and reverse salt diffusion. Six-hour fouling experiments show that the phenol fouling of FO membranes is reversible and easily cleaned by physical flushing. Additionally, compared with the TFC membranes, the MTFC membranes have an increased flux and rejection for phenol in FO.
AB - This study systematically investigated phenol removal from water and phenol fouling of membranes in forward osmosis (FO) using thin-film composite (TFC) polyamide and silver chloride (AgCl) mineralized thin-film composite (MTFC) membranes. The influence of operating parameters (membrane orientation, phenol concentration, draw solution concentration, pH, and ionic strength) on phenol rejection and phenol adsorption to the membrane was investigated to elucidate the phenol transport behaviors in the FO process. Overall, phenol rejection improved with increased draw solution concentration or feed solution pH. At a feed solution pH of 11, TFC membranes exhibited their highest phenol rejection of 97.0% and MTFC membranes exhibited their highest phenol rejection of 98.8%. Phenol adsorption on the membrane surface may be related to the solute hydrophobic character, electrostatic interaction, and reverse salt diffusion. Six-hour fouling experiments show that the phenol fouling of FO membranes is reversible and easily cleaned by physical flushing. Additionally, compared with the TFC membranes, the MTFC membranes have an increased flux and rejection for phenol in FO.
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U2 - 10.1021/acs.iecr.8b00205
DO - 10.1021/acs.iecr.8b00205
M3 - Article
AN - SCOPUS:85046247851
SN - 0888-5885
VL - 57
SP - 7021
EP - 7029
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 20
ER -