Use of packed scrap iron anodes for continuous electrochemical Cr(VI) reduction process in electroplating wastewater treatment
學年 110
學期 1
出版(發表)日期 2021-08-01
作品名稱 Use of packed scrap iron anodes for continuous electrochemical Cr(VI) reduction process in electroplating wastewater treatment
作品名稱(其他語言)
著者 Chao-Chuan Ho; Jui-Shuan Yu; Shao-Wei Yang; Vinh Ya; Hoang Anh Le; Liao-Ping Cheng; Kwang-Ho Choo; Chi-Wang Li
單位
出版者
著錄名稱、卷期、頁數 Journal of Water Process Engineering 42, 102191
摘要 The performance of an electrochemical reduction process was investigated for the treatment Cr(VI)-containing electroplating wastewater using a continuous-flow scrap iron packed column as an sacrificial anode. The effects of the key operating parameters including hydraulic retention time (HRT), current supply ratio (CSR), and inlet Cr(VI) concentration were systematically studied. With a fixed CSR of 106%, the HRT has no impact on Cr(VI) removal, but energy consumption increased with decreasing HRT. A complete Cr(VI) removal was obtained with a final ORP of approximately −100 mV. Increasing the inlet Cr(VI) concentration caused an inefficient removal efficiency of Cr(VI) with an increases in ORP. In contrast, Cr(VI) removal remained virtually unchanged, but ORP was dramatically decreased, when the influent Cr(VI) concentration decreased. Continuous and complete Cr(VI) reduction via electrochemical reactions can be achieved by the ORP range of −200 to −100 mV. The operating cost using continuous flow treatments with HRT of 60 min required less than batch reactor treatment around 40–57%.
關鍵字 Continuous electrochemical reduction;Cr(VI) reduction;Electroplating wastewater;Scrap iron packed column;Oxidation-reduction potential
語言 en_US
ISSN 2214-7144
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 Chi-Wang Li
審稿制度
國別 GBR
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/120936 )