Ti-Ni/γ-Al_2O_3粒子电极的制备及其处理氯霉素废水的效果

Preparation of Ti-Ni/γ-Al_2O_3 particle electrode and its treatment on chloramphenicol wastewater

以活性氧化铝(γ-Al_2O_3)为载体,Ti、Ni为负载金属,采用溶胶凝胶法制备复合型Ti-Ni/γ-Al_2O_3粒子电极,并用其电催化处理模拟氯霉素废水。考察了Ti和Ni负载组分比例、负载次数、电流强度、pH、电极板间距等因素对氯霉素降解效果的影响。结果表明,Ni∶Ti摩尔比为1∶10、负载2次制备的复合型Ti-Ni/γ-Al_2O_3粒子电极电催化效果最好,在电流强度为0.09A、pH为4、电极间距为40mm的优化电解条件下,氯霉素去除率可高达80.56%。

The composite Ti-Ni/γ-Al2O3 particle electrodes were prepared by sol-gel method using activated alumina （γ-Al2O3） as the carrier and Ti and Ni as the supported metal. The obtained composite Ti-Ni/γ-Al2O3 particle electrodes were used for electrocatalytic treatment of simulated chloramphenicol wastewater. The effects of various factors such as the ratio of Ti and Ni load components, the number of loading times,current intensity, solution pH and electrode plate spacing on the degradation of chloramphenicol were investigated. The results showed that the composite Ti-Ni/γ-Al2O3 particle electrodes with the molar ratio of Ni ： Ti of 1 ： 10 and loading times of twice presented the best electrocatalytic property. The degradation rate of chloramphenicol could reach 80.56% under the optimized electrolysis conditions of current intensity 0.09 A,solution pH 4 and electrode spacing 40 mm.