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 en
ISSN 1944-3994 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 是
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/106018 )