Hydrogen permeability of the hollow fibers used in H₂-based membrane biofilm reactors

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• 作者：Youneng Tang^a ; ^b ; ^{tayone0916@gmail.com} ; Chen Zhou^a ; ^{Chen.Zhou.2@asu.edu} ; Steven W. Van Ginkel^a ; ^c ; ^{steppen@asu.edu} ; Aura Ontiveros-Valencia^a ; ^{avontive@asu.edu} ; Junghun Shin^a ; ^d ; ^{sjhoon3@yahoo.co.kr} ; Bruce E. Rittmann^a ; ^{Rittmann@asu.edu}
• 关键词：Hydrogen permeability ; Membrane biofilm reactor ; Membrane material ; Membrane fouling
• 刊名：Journal of Membrane Science
• 出版年：2012
• 期刊代码：55_03767388
• 类别：ch
• 出版时间：15 July, 2012
• 卷：407-408
• 期：Complete
• 页码：176-183
• 文件大小：537 K

摘要

We developed and used steady-state permeation tests and a mathematical model to determine the H₂ permeabilities of three hollow fibers (composite, polyester, and polypropylene) commonly used in the H₂-based membrane biofilm reactor (MBfR). The H₂ permeabilities spanned a wide range: 1.6 脳 10^鈭?, 1.8 脳 10^鈭?, and 6.6 脳 10^鈭? m³ H₂ @ standard temperature and pressure m membrane thickness/m² hollow fiber surface area d bar for the composite, polypropylene, and polyester hollow fibers, respectively; this represents a ratio of the maximum H₂ flux for composite:polypropylene:polyester hollow fibers = 32:3.3:1. The H₂ permeabilities were then used to correlate hollow-fiber type to contaminant-removal flux in previous MBfR experiments. Only the experiments with composite hollow fibers were not routinely limited by H₂ delivery, although fouling by mineral precipitates lowered the H₂ flux in some cases. Since existing contaminant-removal data for the polyester hollow fibers were not adequate, we did special experiments to investigate the effect of H₂ pressure on contaminant removal in the MBfR with the polyester hollow fibers. We confirmed that this hollow fiber was operated at its maximum H₂-delivery capacity based on its H₂ permeability.