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:Evaluating treatment options for wastewater generated from production of metal complex dyes
學年104
學期2
出版(發表)日期2016/06/06
作品名稱Evaluating treatment options for wastewater generated from production of metal complex dyes
作品名稱(其他語言)
著者Chi-Wang Li; Li-Wei Chang; Yang-Min Liang; Yi-Hsuan Chou; Shiao-Shing Chen
單位
出版者
著錄名稱、卷期、頁數Desalination and Water Treatment 57(30), pp.14044-14050
摘要Dye manufacturing process wastewater (DMPW) generated from production of metal complex dyes might be mainly consisted of organic chelates. It is hypothesized that these organic chelates might form complex with metal ions. As the result, coagulation, frequently employed for dyeing wastewater treatment through sweep-floc mechanism, might not be an effective process to treat DMPW, since Fe(III) or Al(III) might be chelated by organic dye molecules instead of precipitated as metal hydroxides. In this study, carbon/chelated Fe3+ molar ratio (C/Fe ratio) is used to represent the content of organic chelates in DMPW and is subsequently used to explore destruction of these chelates after various treatment processes. Finally, the treatment options for DMPW are proposed based on C/Fe ratio after various treatment processes. The C/Fe ratio of biologically treated DMPW is almost two times higher than that of raw DMPW, indicating that biological treatment process is very effective for destroying chelating functional groups and could be employed as a pretreatment process to improve coagulation efficacy subsequently. On the other hand, the C/Fe ratio of the advanced oxidation process-treated DMPW is quite close to that of raw DMPW, indicating that destruction of chelating molecules by heat-activated persulfate is a non-selective process.
關鍵字Metal complex dye;Chelating;Coagulation;Adsorption;Biological treatment
語言英文
ISSN1944-3994;1944-3986
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
國別英國
公開徵稿
出版型式,電子版,紙本
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