Type
ArticleKAUST Department
Biological and Environmental Sciences and Engineering (BESE) DivisionEnvironmental Science and Engineering Program
Water Desalination and Reuse Research Center (WDRC)
Date
2013-09-13Online Publication Date
2013-09-13Print Publication Date
2013-10Permanent link to this record
http://hdl.handle.net/10754/563022
Metadata
Show full item recordAbstract
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/es402138eSponsors
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)PubMed ID
24032659ae974a485f413a2113503eed53cd6c53
10.1021/es402138e
Scopus Count
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