教師資料查詢 | 類別: 期刊論文 | 教師: 李奇旺 Chi-Wang Li (瀏覽個人網頁)

標題:Electrochemical treatment for simultaneous removal of heavy metals and organics from surface finishing wastewater using sacrificial iron anode
學年106
學期2
出版(發表)日期2018/02/01
作品名稱Electrochemical treatment for simultaneous removal of heavy metals and organics from surface finishing wastewater using sacrificial iron anode
作品名稱(其他語言)
著者Vinh Ya; Natacha Martin; Yi-Hsuan Chou; Yi-Ming Chen; Kwang-Ho Choo; Shiao-Shing Chen; Chi-Wang Li
單位
出版者
著錄名稱、卷期、頁數Journal of the Taiwan Institute of Chemical Engineers 83, p.107-114
摘要Surface finishing wastewater having low pH (∼2) and high conductivity (>11 mS/cm) was treated by electrocoagulation (EC) or electrochemical Fenton (ECF) processes using sacrificial iron anodes. Under the same theoretical Fe dosage, the effects of electrolytic time, initial pH, and current density on the simultaneous removal of organic and heavy metal were investigated. A complete metal removal was achieved even at the low current density of 24.2 mA/cm2 and short electrolytic time of 4 min, whereas approximately 40% of chemical oxygen demand was removed. Increasing the electric current density did not improve removal efficiencies, but consumed more electric energy. Low current conditions produced a brown color sludge associated with ferric hydroxide. On the contrary, a greenish color sludge was created at a high current due to the formation of ferrous hydroxide. The formation of ferrous hydroxide impacted the treated water quality. The ECF was employed to overcome the low COD removal by the EC, achieving >67% of COD removal. The costs of ECF processes were slightly greater than that of chemical coagulation, but achieving a lot greater heavy metal removals. ECF process can be a promising method for simultaneous removal of heavy metal and organics from complex industrial wastewater.
關鍵字Sacrificing anode;Precipitation;Fe(II)/Fe(III) species;Surface finishing;Chemical sludge
語言英文(美國)
ISSN
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
國別中華民國
公開徵稿
出版型式,電子版
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