کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
624979 1455413 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparative efficiencies of the decolourisation of leather dyes by enzymatic and electrochemical treatments
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Comparative efficiencies of the decolourisation of leather dyes by enzymatic and electrochemical treatments
چکیده انگلیسی

Leather dyes are important chemical pollutants of industrial origin. The society demand for colour-free waste discharge to receiving waters has made decolourisation of industrial wastes a top priority. Due to their complex chemical structures, the decolourisation of these wastes is a challenging task. In this study, the decolourisation and degradation efficiency of six leather dyes by enzymatic and electrochemical treatments were studied. In the presence of salts, all dyes were totally decolourised by electrochemical treatment in 4 h. Though it has showed appreciable ability of enzymatic degradation, it was observed that the salts present in tannery effluents cause inhibition problems that significantly affected the dye degradation. In addition, enzymatic and electrochemical treatments with a mixture of the six dyes were carried out. Once again, the electrochemical treatment shows better results and after 4 h the obtained decolourisation was total which is squared with a complete total organic carbon (TOC) reduction. Besides, the degradation of this mixture was carried out successfully in a continuous electrochemical bubble reactor. Therefore, the results provide fundamental knowledge for the treatment of a leather wastewater stream.

Research Highlights
► Enzymatic and electrochemical degradation of leather dyes was studied.
► Salts present in tannery effluents cause inhibition problems in enzymatic treatment.
► After 4 h dyes were totally degraded by electrochemical treatment in presence of salts.
► Dye leather mixture was treated successfully in a continuous electrochemical reactor.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 278, Issues 1–3, 1 September 2011, Pages 312–317
نویسندگان
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