出版社：Thai Society of Higher Eduction Institutes on Environment
摘要：Performance of carbon-ceramic composite electrode was investigated for degradating of Remazol black B dye on indirect electrochemical oxidation reactor. Carbon-ceramic composite electrode was prepared by mixing alumina, kaolin and liquid clay with carbon addition as a conductive phase. The electrode was casted in stainless steel mold and then sintered at 900 degree Celsius in a vacuum furnace for 7 h. The surface morphology, crystalline phase and electrical conductivity of the carbon-ceramic composite electrodes were investigated. The electrode with a highest electrical conductivity was applied on indirect electrochemical oxidation reactor for degradating Remazol black B. The operational parameters investigated included the infl uence of initial pH, electrolyte concentration and dye concentration on color removal effi ciency. The research revealed that the electrical conductivity of carbon-ceramic composite electrode with addition of 30% carbon was 5.04 S/cm. The color removal effi ciency of Remazol black B on the reactor using this electrode was 87.75% for 60 min. of electrolysis time with an applied voltage of 12 V, at pH 6, with the addition of 3 g table salt per liter of waste and dye concentration of 100 mg/L. This study indicates that carbon-ceramic composite electrode is prospective to be used as an electrode on electrochemical cells for wastewater treatment.
关键词：Carbon-ceramic composite electrode; Electrical conductivity; Indirect electrochemical oxidation; Color removal effi ciency; Remazol black B textile dye
