کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
191037 459713 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Degradation of Alizarin Red by electro-Fenton process using a graphite-felt cathode
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Degradation of Alizarin Red by electro-Fenton process using a graphite-felt cathode
چکیده انگلیسی

The removal of the anthraquinone dye Alizarin Red S (AR) has been investigated by electro-Fenton process using a commercial graphite-felt to electrogenerate in situ hydrogen peroxide and regenerate ferrous ions as catalyst. The effect of operating conditions such as applied current, catalyst concentration, and initial dye content on AR degradation has been studied. AR decay kinetic, the evolution of its oxidation intermediates and the mineralization of the aqueous solutions were monitored during the electrolysis by UV–Vis analysis and TOC measurements. The experimental results showed that AR was completely removed by the reaction with OH radicals generated from electrochemically assisted Fenton's reaction, and the decay kinetic always follows a pseudo-first-order reaction. Applying a current of 300 mA and with catalyst concentration of 0.2 mM Fe2+, 95% of the initial TOC was removed in 210 min of electrolysis, meaning the almost complete mineralization of the organic content of the treated solution.


► Electrochemical removal of Alizarin Red using a graphite-felt cathode was studied.
► We examine the influence of the main operating parameters affecting the treatment.
► Kinetic of dye oxidation and mineralization was monitored.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 56, Issue 20, 1 August 2011, Pages 7084–7087
نویسندگان
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