Journal article
Impact of Physical and Chemical Cleaning Agents on Specific Biofilm Components and the Implications for Membrane Biofouling Management
Industrial & engineering chemistry research, v 57(9), pp 3359-3370
07 Mar 2018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
A homogeneous layer of a single biofilm component (polysaccharides, proteins, and nucleic acids) was studied on an ultrafiltration membrane and its interaction with different cleaning solutions (base, oxidizer, surfactant, and chelating agent) was evaluated by comparing permeate flux, with the base and oxidizer showing the best cleaning performance. The presence of calcium in the feed solution hindered the ability of the cleaning solutions to completely remove the foulants in the absence of a chelating agent. Backwashing the membranes fouled with polysaccharides and DNA resulted in full flux recovery but had little effect on recovering the flux of protein-fouled membranes. The efficacy of cleaning agents toward model biofilm component mixtures designed to mimic Gram-negative and Gram-positive bacterial biofilms were tested. Flux recovery was enhanced by the usage of a base and oxidizer. However, full recovery was never achieved using chemical cleaning agents. It was determined that the presence of proteins in biofilms determines their susceptibility to cleaning.
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Details
- Title
- Impact of Physical and Chemical Cleaning Agents on Specific Biofilm Components and the Implications for Membrane Biofouling Management
- Creators
- Caroline Y. Kim - University of California, Los AngelesXiaobo Zhu - Univ Calif Los Angeles, Dept Civil & Environm Engn, Los Angeles, CA 90028 USAMoshe Herzberg - Ben-Gurion University of the NegevSharon Walker - University of California, RiversideDavid Jassby - University of California, Los Angeles
- Publication Details
- Industrial & engineering chemistry research, v 57(9), pp 3359-3370
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 12
- Grant note
- 1437860 / National Science Foundation's Environmental Engineering Program 1437860 / Div Of Chem, Bioeng, Env, & Transp Sys; Directorate For Engineering; National Science Foundation (NSF); NSF - Directorate for Engineering (ENG)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- College of Engineering
- Web of Science ID
- WOS:000427203000022
- Scopus ID
- 2-s2.0-85043474086
- Other Identifier
- 991021230000304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Engineering, Chemical