Effect of skin layer surface structures on the flux behaviour of RO membranes |
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| Institution: | 1. Department of Civil & Environmental Engineering, University of California, California NanoSystems Institute and Institute of the Environment & Sustainability, Los Angeles, CA, USA;2. Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA;3. Department of Civil & Environmental Engineering, Technion – Israel Institute of Technology, Haifa, Israel;1. Department of Chemical Engineering, University of Missouri, Columbia, MO 65211, USA;2. Al-Dour Technical Institute, Northern Technical University, Al-Dour, Saladin, Iraq;3. Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO 65211, USA;1. Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 639798, Singapore;2. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore;3. Department of Chemical & Biological Engineering, University of Colorado, Boulder, CO 80309-0424, USA |
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| Abstract: | The relationship between the surface structures of skin layers of crosslinked aromatic polyamide composite reverse osmosis (RO) membranes and their RO performances have been studied using two surface analytical techniques: SEM and AFM. As a result, it was found that RO membranes whose skin layer surface structures were rough produced high fluxes, and an approximately linear relationship existed between this surface roughness and RO membrane flux. Accordingly, skin layer surface unevenness of crosslinked aromatic polyamide composite RO membranes is regarded as an enlargement of the effective RO membrane area. |
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