The slow diffusion of pollutants to the surface of electrodes has limited the contact between OH radicals and micropollutants in electro-oxidation processes. In this study, conductive hollow fiber membrane (CHF) made with multi-walled carbon nanotube (CHF) was fabricated and operated with flow-through system. During the electro-oxidation of three micropollutants, a conventional flow-by reactor showed less than 60% of removals at the hydraulic retention time (HRT) of 30 minutes, while flow-through operation could achieve complete removal for all tested micropollutants at the same HRT. Moreover, the flow-through system exhibited complete removals even at the HRT of 1 minutes, while that of flow-by system were less than 10 %.

• 강석태(한국과학기술원 건설 및 환경공학과) | Seoktae Kang