کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
581717 | 1453160 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced biodecolorization of azo dyes by electropolymerization-immobilized redox mediator
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhanced biodecolorization of azo dyes by electropolymerization-immobilized redox mediator Enhanced biodecolorization of azo dyes by electropolymerization-immobilized redox mediator](/preview/png/581717.png)
چکیده انگلیسی
The biodecolorization rate of azo dyes can be improved by the addition of some soluble quinoid redox mediators, but continuous dosing and discharge of these mediators will result in the secondary contamination due to their recalcitrant trait. In this study, the effect of anthraquinone-2,6-disulfonate (AQDS) bound into polypyrrole (PPy) on activated carbon felt (ACF) on anaerobic biodecolorization of azo dyes was investigated and compared with that immobilized on platinum (Pt). The results showed that in the presence of AQDS/PPy/ACF, the biodecolorization efficiency of azo dye RR15 reached over 80% at the optimal pH 7 in 8Â h and kept stable during successive 10 times repeated experiments. In contrast, in the presence of AQDS/PPy/Pt biodecolorization efficiency of RR15 was less than 60% under the above conditions, and the PPy doped by AQDS desquamated from the substrate material Pt at the third biodecolorization experiment. In addition, in the presence of AQDS/PPy/ACF biodecolorization efficiencies of 5 reactive dyes, 4 acid dyes and 2 direct dyes increased more than 3-fold than that without AQDS. This indicates that electropolymerization-immobilized AQDS (AQDS/PPy/ACF) has potential applications in accelerating the anaerobic biodecolorization of azo dyes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 168, Issues 2â3, 15 September 2009, Pages 1098-1104
Journal: Journal of Hazardous Materials - Volume 168, Issues 2â3, 15 September 2009, Pages 1098-1104
نویسندگان
Wang Jing, Li Lihua, Zhou Jiti, Lu Hong, Liu Guangfei, Jin Ruofei, Yang Fenglin,