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Title: Impact of feed water pH and membrane material on nanofiltration of perfluorohexanoic acid in aqueous
Authors: Zeng, Chenghui
Tanaka, Shuhei  kyouindb  KAKEN_id
Suzuki, Yuji
Fujii, Shigeo  kyouindb  KAKEN_id
Author's alias: 田中, 周平
藤井, 滋穂
Keywords: Perfluorohexanoic acid (PFHxA)
Nanofiltration (NF)
Polyamide membrane
Sulfonated polyethersulfone membrane
Issue Date: Sep-2017
Publisher: Elsevier BV
Journal title: Chemosphere
Volume: 183
Start page: 599
End page: 604
Abstract: Nanofiltration was thought to be a good option for the recovery of perfluorohexanoic acid (PFHxA) from industrial wastewater. In this study, two commercially available nanofiltration (NF) membranes (NF 270 and NTR-7450) were tested to concentrate the PFHxA in aqueous solution. Filtration test was conducted in crossflow filtration mode. Membrane flux and PFHxA rejection rate were monitored throughout the filtration test. The impact of initial feed water pH on membrane performance was investigated. Results demonstrated that the two NF membranes showed different response to the change of initial feed water pH, which was caused by the intrinsic properties of membrane material. The flux performance of NF 270 was stable, while its rejection rate of PFHxA was very sensitive to the change of initial feed water pH. Opposite result was obtained with NTR-7450. It had a very good stability on rejection rate, while its flux was very sensitive to the change of initial feed water pH. The mechanisms behind these phenomena were also discussed. The results obtained in this study should be very useful for the process design in practical engineering.
Rights: © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
This is not the published version. Please cite only the published version.
DOI(Published Version): 10.1016/j.chemosphere.2017.05.132
PubMed ID: 28575703
Appears in Collections:Journal Articles

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