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Cho, Jaeweon
도시환경 감각연구소/Sense Laboratory
Research Interests
  • Convergence of Science and Arts; Environment Ethics; Meta-modernism in Semantics Engineering

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Removal of N-nitrosamines in a membrane bioreactor and nanofiltration hybrid system for municipal wastewater reclamation: Process efficiency and mechanisms

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Title
Removal of N-nitrosamines in a membrane bioreactor and nanofiltration hybrid system for municipal wastewater reclamation: Process efficiency and mechanisms
Author
Chon, KangminKim, Sung HyunCho, Jaeweon
Issue Date
2015-08
Publisher
ELSEVIER SCI LTD
Citation
BIORESOURCE TECHNOLOGY, v.190, pp.499 - 507
Abstract
This study investigated the removal efficiency and mechanisms of water contaminants (mainly N-nitrosamines) during municipal wastewater reclamation by a membrane bioreactor (MBR) and nanofiltration (NF) hybrid system. The removal of bulk water contaminants was governed by the microbial activities in the MBR and molecular weight cut-off (MWCO) of the NF membranes. The removal of N-nitrosamines by the MBR was primarily attributed to biodegradation by aerobic bacteria, which can be determined by the reactivity of the amine functional groups with the catabolic enzymes (removal efficiency = 45-84%). Adsorption and formation of membrane fouling can enhance the removal of N-nitrosamines by the NF membranes. However, size-exclusion is found to play a major role in the removal of N-nitrosamines by the NF membranes since the removal efficiencies of N-nitrosamines varied significantly depending on molecular weight of the N-nitrosamines and MWCO of the NF membranes (removal efficiency: NE90 > NE70).
URI
https://scholarworks.unist.ac.kr/handle/201301/11126
URL
http://www.sciencedirect.com/science/article/pii/S0960852415002667
DOI
10.1016/j.biortech.2015.02.080
ISSN
0960-8524
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