Journal
CHEMOSPHERE
Volume 210, Issue -, Pages 769-778Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2018.07.086
Keywords
Membrane fouling; interfacial interactions; XDLVO theory; Membrane bioreactor; Surface morphology
Categories
Funding
- National Natural Science Foundation of China [51578509, 21506195]
- Zhejiang Provincial Natural Science Foundation of China [LY17E080003, LQ16E080003]
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While governing adhesion/deposition of various foulants on membrane surface and membrane fouling in membrane bioreactors (MBRs), interfacial interactions with real membrane surface have not yet been fully quantified. In this study, theoretical deduction and experiments were carried out to numerically elucidate interfacial interactions in a MBR. A continuous real membrane morphology was reconstructed based on atomic force microscopy (AFM) characterization and triangulation technique. Thereafter, a method to calculate those interactions was established by incorporating the spatial relationship between a foulant and the reconstructed morphology into surface element integration (SEI) method. A case study of the proposed method was conducted. With surface characterization of the foulants and membrane, the interfacial interactions with real membrane morphology were approximated for the first time by computer programming according to composite Simpson's rule. The results showed that rough morphology prolonged the interfacial interactions, indicating the profound role of morphology in the interfacial interactions related with membrane fouling. The new method would provide significant in-sights into membrane fouling in MBRs. (C) 2018 Elsevier Ltd. All rights reserved.
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