Maeng, Sung Kyu Khan, Waris Park, Ji Won Han, Ihnsup Yang, Hee Sung Song, Kyung Guen Choi, Wook Jin Kim, Sungpyo Woo, Hyoungmin Kim, Hyun-Chul 2024-01-19T23:04:05Z 2024-01-19T23:04:05Z 2021-09-03 2018-03-15 0011-9164 https://pubs.kist.re.kr/handle/201004/121603 This study achieves a better understanding how Scenedesmus quadricauda microalgae participate in the phycoremediation of a reverse osmosis (RO) concentrate at a high salinity (8000 mg Cl- L-1). Algal treatment of the RO concentrate under continuous illumination resulted in a notable increase in the biodegradability of dissolved organic matter, subsequent removal of biodegradable fractions, and simultaneous removal of nutrients (N and P). This is the first time that S. quadricauda is shown to induce the degradation of polymeric organic matter in the RO concentrate, which is typically refractory to microbial decomposition. In this study, the mechanisms for algae-induced degradation were investigated by measuring the hydrogen peroxide (H2O2) released out of algal cells and dispersed in the aqueous phase. The algae-induced biodegradation process has an advantage over typical electrochemical oxidation technologies in that photo-sensitive living organisms are capable of self-repair, reproduction, and nutrient uptake. Our results indicate that the use of algae-induced oxidation is highly feasible as a safe, inexpensive technology to pre-treat non- or slowly-biodegradable organic matter in wastewater prior to downstream biological processing. English ELSEVIER SCIENCE BV REVERSE-OSMOSIS CONCENTRATE MUNICIPAL WASTE-WATER UVC/H2O2 TREATMENT ACTIVATED CARBON MICROALGAE PRETREATMENT COAGULATION IMPACT TECHNOLOGIES RIVER Treatment of highly saline RO concentrate using Scenedesmus quadricauda for enhanced removal of refractory organic matter Article 10.1016/j.desal.2017.12.056 1 DESALINATION, v.430, pp.128 - 135 DESALINATION 430 128 135 scie scopus 000424173900013 2-s2.0-85039985506 Engineering, Chemical Water Resources Engineering Water Resources Article REVERSE-OSMOSIS CONCENTRATE MUNICIPAL WASTE-WATER UVC/H2O2 TREATMENT ACTIVATED CARBON MICROALGAE PRETREATMENT COAGULATION IMPACT TECHNOLOGIES RIVER Reverse osmosis concentrate Phycoremediation Scenedesmus quadricauda Reactive oxygen species Biodegradation