Kim, Heegon Choi, Yeseul Lee, Soonjae Lee, Ki-Bong Jung, Kyung-Won Choi, Jae-Woo 2024-01-19T15:34:22Z 2024-01-19T15:34:22Z 2021-09-02 2021-01 1226-086X https://pubs.kist.re.kr/handle/201004/117601 Dissolved organic matter and scaling are the main causes of electrode fouling, blocking activated carbon pores and reducing their performance. However, limited information exists on fouling by low molecular weight organic matter in the capacitive deionization (CDI) process. This study therefore systematically investigated for the first time a pretreatment process to prevent the accumulation of organic and inorganic matter as well as scaling in the CDI process. During various pretreatments, activated filter media and granule activated carbon were considered promising for drinking water treatment. The higher the turbidity and organic matter concentration in the CDI feed solution was, the greater the reduction of salt removal efficiency, production rate, and energy consumption became. Divalent ions, such as Ca2+, had no noticeable effect on CDI treatment performance because of the neutralization effect of the dispersant, whereas iron had a noticeable effect on CDI electrode fouling. The results of this study are foreseen to help minimize its negative impact by reducing organic matter fouling and enabling water reuse. (C) 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. English 한국공업화학회 Pretreatment for capacitive deionization: Feasibility tests using activated filter media and granule activated carbon filtration Article 10.1016/j.jiec.2020.10.001 1 Journal of Industrial and Engineering Chemistry, v.93, pp.253 - 258 Journal of Industrial and Engineering Chemistry 93 253 258 N scie scopus kci ART002680036 000594534800006 2-s2.0-85094116843 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article WASTE-WATER RECLAMATION REVERSE-OSMOSIS BRINE TREATMENT DEIONISATION DESALINATION MEMBRANE OPTIMIZATION PERFORMANCE IMPROVEMENT EFFICIENCY Liquid chromatography with organic carbon detection Capacitive deionization Activated filter media Municipal wastewater