کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
691590 1460440 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrochemical degradation of phenol in aqueous solution using PbO2 anode
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Electrochemical degradation of phenol in aqueous solution using PbO2 anode
چکیده انگلیسی

The PbO2 electrode was prepared by electrodeposition method in this paper. The electrode was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and cyclic voltammetry (CV). The electrochemical oxidation of phenol in aqueous solution was studied by galvanostatic electrolysis using PbO2 electrode as anode. UV spectroscopy, total organic carbon (TOC) and chemical oxygen demand (COD) measurements were conducted to study the kinetics of phenol electrochemical degradation and the mineralization efficiency under different current densities. The experimental results showed that the applied current density had a positive influence on the degradation of phenol and removal of TOC, but a higher current density led to lower current efficiency and higher energy consumption. The phenol degradation always followed a pseudo-first-order kinetics. In addition, aromatic intermediates and general carboxylic acids generated in the degradation of phenol have been indentified using high-performance liquid chromatography (HPLC) and a general pathway for the electrochemical degradation of phenol on PbO2 anode was proposed.


► PbO2 electrode with an interlayer of SnO2–Sb2O3 was prepared.
► The electrode was characterized by SEM, XRD and CV.
► UV spectroscopy and TOC measurements were conducted to study the kinetics of phenol degradation.
► Intermediates of phenol degradation were identified by HPLC.
► a general pathway for the electrochemical degradation of phenol on PbO2 anode was proposed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Taiwan Institute of Chemical Engineers - Volume 44, Issue 1, January 2013, Pages 95–102
نویسندگان
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