Impact of simultaneous retention of micropollutants and laccase on micropollutant degradation in enzymatic membrane bioreactor

Asif, M, Hai, F, Dhar, B, Ngo, H, Guo, W, Jegatheesan, J, Price, W, Nghiem, L and Yamamoto, K 2018, 'Impact of simultaneous retention of micropollutants and laccase on micropollutant degradation in enzymatic membrane bioreactor', Bioresource Technology, vol. 267, pp. 473-480.


Document type: Journal Article
Collection: Journal Articles

Title Impact of simultaneous retention of micropollutants and laccase on micropollutant degradation in enzymatic membrane bioreactor
Author(s) Asif, M
Hai, F
Dhar, B
Ngo, H
Guo, W
Jegatheesan, J
Price, W
Nghiem, L
Yamamoto, K
Year 2018
Journal name Bioresource Technology
Volume number 267
Start page 473
End page 480
Total pages 8
Publisher Elsevier BV
Abstract This study systematically compares the performance of ultrafiltration (UF) and nanofiltration (NF) based enzymatic membrane bioreactors (EMBRs) for the degradation of five micropollutants, namely atrazine, carbamazepine, sulfamethoxazole, diclofenac and oxybenzone to elucidate the impact of effective membrane retention of micropollutants on their degradation. Based on the permeate quality, NF-EMBR achieved 9299.9% micropollutant removal (i.e., biodegradation + membrane retention), while the removal of these micropollutants by UF-EMBR varied from 20 to 85%. Mass balance analysis revealed that micropollutant degradation was improved by 1530% in NF-EMBR as compared to UF-EMBR, which could be attributed to the prolonged contact time between laccase and micropollutants following their effective retention by the NF membrane. A small decline in permeate flux was observed during EMBR operation. However, the flux could be recovered by flushing the membrane with permeate.
Subject Chemical Engineering not elsewhere classified
Keyword(s) Enzymatic membrane bioreactor Laccase-catalyzed degradation
High retention membrane
Micropollutants
Nanofiltration membrane
Ultrafiltration membrane
DOI - identifier 10.1016/j.biortech.2018.07.066
Copyright notice © 2018 Elsevier Ltd. All rights reserved.
ISSN 0960-8524
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