TY - JOUR AU - AB - Uncorrected Proof © 2022 The Authors Water Supply Vol 00 No 0, 1 doi: 10.2166/ws.2022.345 Polydopamine-copper spacers improve longevity and prevent biofouling in reverse osmosis a, b c b Amos Taiswa *, Jessica M. Andriolo , Katherine R. Zodrow and Jack L. Skinner Earth Science and Engineering Ph.D., and Montana Tech Nanotechnology Laboratory, Montana Technological University, Butte, MT 59701, USA Montana Tech Nanotechnology Laboratory, Mechanical Engineering Department, Montana Technological University, Butte, MT 59701, USA Environmental Engineering Department, Montana Technological University, Butte, MT 59701, USA *Corresponding author. E-mail: ataiswa@mtech.edu ABSTRACT Reverse Osmosis (RO) is a promising technology that will increase access to clean and safe water sources throughout the world. However, the impact of RO filtration of natural waters is severely hindered by biofouling. Formation of complex biofilms on RO membranes dramatically decreases output due to release of extracellular polymeric substances (EPS) by the microorganisms. We present a polydopamine-copper (PD-Cu) coating for RO feed spacer materials to prevent biofouling and enhance longevity of Cu ions. The following spacers were tested in a continuous flow bench scale RO system: (1) Polypropylene (PP) feed spacers coated with PD-Cu, (2) a pristine PP, control spacer, (3), a PD control spacer and (4) a TI - Polydopamine-copper spacers improve longevity and prevent biofouling in reverse osmosis JF - Water Supply DO - 10.2166/ws.2022.345 DA - 2022-09-30 UR - https://www.deepdyve.com/lp/unpaywall/polydopamine-copper-spacers-improve-longevity-and-prevent-biofouling-0724OxJG4i DP - DeepDyve ER -