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Abstract
Submerged hollow fiber membranes (SHFMs) are used for a wide variety of applications. Their applicability and their advantages, however, depend crucially on the prevailing hydrodynamics within single fibers. In this respect, the non-uniform distribution of transmembrane flux is a known problem related to inhomogeneous membrane fouling and disadvantages for cleaning. To address this problem, we propose an approach to homogenize transmembrane flux by varying the local membrane resistance using optimal control methods for the first time in SHFM research. Based on an established model, different scenarios are optimized, namely with different fiber lengths and inner radii. In addition, a double-end setup is explored. It is shown that the optimization goal is reached very well in all tested cases, which underlines the general validity of our strategy. Further uses and extensions of the optimization method are provided, as well as hints for the practical implementation of the suggested measures.
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Jia H, Feng F, Wang J, Ngo HH, Guo W, Zhang H. On line monitoring local fouling behavior of membrane filtration process by in situ hydrodynamic and electrical measurements. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.117245] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mu S, Xiao K, Fan H, Liu C, Liang S, Xiao F, Wang X, Huang X. Non-uniform distribution of adsorptive fouling along hollow fiber membrane: Characterization and quantification. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.05.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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