二氧化钛电催化氧化处理甲基橙

以半导体材料二氧化钛为催化剂,对偶氮染料甲基橙溶液进行了电催化氧化降解实验;考察了催化剂量、槽电压、pH值、电解质浓度、反应时间等因素对处理效果的影响.实验结果表明:二氧化钛的催化效果显著,其色度和COD去除效果可比无催化剂时效果分别提高35%和28%;去除机制主要是电催化体系中产生的·OH对有机物的氧化、降解.

Study on the Degradation of Dye Wastewater by Electrochemical Oxidation with Titanium dioxide

As the electrochemical activator, titanium dioxide was introduced to treat methyl orange solution, the typical azo dyes with a novel electric catalysis system. This paper had investigated the effects of activator amount, applied voltage, pH value, electrolysis time on COD and color removal rate. The experiment results indicated that the electric catalytic oxidation process could efficiently remove and degrade methyl orange. color removal and COD removal with titanium dioxide activator could be 35% and 28% more than those without activator respectively. The removal efficiency could be attributed to the oxidation of hydroxyl radicals generated in electric catalysis system.