title: Effect of interactions between Co(2+) and surface goethite layer on the performance of α-FeOOH coated hollow fiber ceramic ultrafiltration membranes.
abstract: The consideration of water energy nexus inspires the environmental engineering community to pursue a more sustainable strategy in the wastewater treatment. One potential response would be to enhance the performance of the low-pressure driven filtration system. To reach this objective, it is essential to have a better understanding regarding the surface interaction between the target substance and the surface of membrane. In this study, the hollow fiber ceramic membranes were coated with a goethite layer in order to enhance the Co(2+) rejection. Experimental results indicate that higher Co(2+) rejections are always accompanied with the significant reduction in the permeability. Based on the consideration of electroviscous effect, the surface interactions including the induced changes in viscosity, pore radius and Donnan effect in the goethite layer are likely responsible for the pH dependent behaviors in the rejection and permeability. These results could be valuable references to develop the filtration system with high rejection along with acceptable degree of permeability in the future.
authors.affiliation: Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics of Shandong Province, School of Materials Science and Engineering, Qilu University of Technology, Jinan, China.
authors.forename: Zhiwen
authors.initials: Z
authors.lastname: Zhu
authors.affiliation: Institute of Urban Environment, Chinese Academy Sciences, Xiamen, China.
authors.forename: Li
authors.initials: L
authors.lastname: Zhu
authors.affiliation: Institute of Urban Environment, Chinese Academy Sciences, Xiamen, China.
authors.forename: Jianrong
authors.initials: J
authors.lastname: Li
authors.affiliation: Institute of Urban Environment, Chinese Academy Sciences, Xiamen, China.
authors.forename: Jianfeng
authors.initials: J
authors.lastname: Tang
authors.affiliation: Institute of Urban Environment, Chinese Academy Sciences, Xiamen, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Li
authors.affiliation: Biomedical Engineering and Environment Sciences, National Tsing Hua University, Hsinchu, Taiwan.
authors.forename: Yi-Kong
authors.initials: YK
authors.lastname: Hsieh
authors.affiliation: Biomedical Engineering and Environment Sciences, National Tsing Hua University, Hsinchu, Taiwan. Electronic address: thwang@mx.nthu.edu.tw.
authors.forename: TsingHai
authors.initials: T
authors.lastname: Wang
authors.affiliation: Biomedical Engineering and Environment Sciences, National Tsing Hua University, Hsinchu, Taiwan. Electronic address: cfwang@mx.nthu.edu.tw.
authors.forename: Chu-Fang
authors.initials: CF
authors.lastname: Wang
keywords: Donnan effect; Surface complexation modeling; Surface interaction; Water energy nexus