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    Kinetic study of seawater reverse osmosis membrane fouling

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    Type
    Article
    Authors
    Khan, Muhammad
    De, Carmemlara
    Aubry, Cyril
    Gutiérrez, Leonardo A.
    Croue, Jean-Philippe
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2013-09-13
    Online Publication Date
    2013-09-13
    Print Publication Date
    2013-10
    Permanent link to this record
    http://hdl.handle.net/10754/563022
    
    Metadata
    Show full item record
    Abstract
    Reverse osmosis (RO) membrane fouling is not a static state but a dynamic phenomenon. The investigation of fouling kinetics and dynamics of change in the composition of the foulant mass is essential to elucidate the mechanism of fouling and foulant-foulant interactions. The aim of this work was to study at a lab scale the fouling process with an emphasis on the changes in the relative composition of foulant material as a function of operating time. Fouled membrane samples were collected at 8 h, and 1, 2, and 4 weeks on a lab-scale RO unit operated in recirculation mode. Foulant characterization was performed by CLSM, AFM, ATR-FTIR, pyrolysis GC-MS, and ICP-MS techniques. Moreover, measurement of active biomass and analysis of microbial diversity were performed by ATP analysis and DNA extraction, followed by pyro-sequencing, respectively. A progressive increase in the abundance of almost all the foulant species was observed, but their relative proportion changed over the age of the fouling layer. Microbial population in all the membrane samples was dominated by specific groups/species belonging to Proteobacteria and Actinobacteria phyla; however, similar to abiotic foulant, their relative abundance also changed with the biofilm age. © 2013 American Chemical Society.
    Citation
    Khan, M. T., de O. Manes, C.-L., Aubry, C., Gutierrez, L., & Croue, J. P. (2013). Kinetic Study of Seawater Reverse Osmosis Membrane Fouling. Environmental Science & Technology, 47(19), 10884–10894. doi:10.1021/es402138e
    Sponsors
    We thank Dr. Wei Xu and Guangchao Wang for help in analyzing samples with confocal laser scanning microscope. Additionally, we thankfully acknowledge the support received from our WDRC lab staff. All the funds for this work were provided by King Abdullah University of Science and Technology (KAUST).
    Publisher
    American Chemical Society (ACS)
    Journal
    Environmental Science & Technology
    DOI
    10.1021/es402138e
    PubMed ID
    24032659
    ae974a485f413a2113503eed53cd6c53
    10.1021/es402138e
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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