Kim, Hye-Won Choi, Woodan Suh, Dongwoo Baek, Youngbin Cho, Kyungjin Jeong, Seongpil 2024-01-19T08:30:20Z 2024-01-19T08:30:20Z 2023-11-08 2023-11 0959-6526 https://pubs.kist.re.kr/handle/201004/113123 Water scarcity is a severe issue for humans owing to global climate change. Water reuse via reverse osmosis (RO) has been widely used to stabilize water supplies; however, RO membrane fouling increases operational costs and necessitates intermittent operation. The biofouling study on the RO pilot was operated either intermittently or continuously using collected brackish water. The environmental microbiome was incubated under oxic and anoxic conditions to simulate surface and groundwater conditions as the feed water. The least fouling was observed on the RO membrane surface when the RO system was operated intermittently using feed water incubated under anoxic conditions. The microbial results showed that specific biofilm communities were formed on RO membrane surface after brackish water RO (BWRO) operation. The major biofilm-forming bacteria distinctively differed with influent water conditions (i.e., oxic vs. anoxic), whereas they were less different with operational strategies (i.e., continuous vs. intermittent). Intermittent operation could compensate for physical cleaning. However, chemical cleaning showed the most effective results for microbe removal on the membrane surface. Therefore, intermittent operation using anoxic feed water can mitigate fouling formation on RO membranes. English Elsevier BV Pilot study of biofouling occurrence in a brackish water reverse osmosis system using intermittent operation Article 10.1016/j.jclepro.2023.139097 1 Journal of Cleaner Production, v.425 Journal of Cleaner Production 425 Y scie scopus 001087205100001 2-s2.0-85173149408 Green & Sustainable Science & Technology Engineering, Environmental Environmental Sciences Science & Technology - Other Topics Engineering Environmental Sciences & Ecology Article DESALINATION MEMBRANES FLUX DESIGN PLANT MICROBIAL COMMUNITY STRUCTURE SP-NOV. BIOFILM FORMATION MARINE SEDIMENT GEN. NOV. Reverse osmosis Intermittent operation Biofouling Oxic/anoxic conditions Microbial community analysis