CAJ | 학술논문

选用石墨为阳极,不锈钢为阴极构成二维电极降解对苯二酚模拟废水.利用正交试验考察了各种条件对苯二酚去除效果的影响,并分析了对苯二酚的降解过程.当电解质的浓度为0.04mol·L~(-1)、电压为8V、pH为8.5时,对苯二酚去除效果最好,可达到90.44%.电压对有机物去除影响显著,在中性以及弱酸弱碱条件下有机物去除比较稳定,电解质对有机物去除影响较小.对苯二酚在电化学催化系统中的降解过程很好地符合了1级反应模型;在最佳试验条件下,去除对苯二酚的速率常数k_1为0.017 9 min~(-1).
선용석묵위양겁,불수강위음겁구성이유전겁강해대분이분모의폐수.이용정교시험고찰료각충조건대분이분거제효과적영향,병분석료대분이분적강해과정.당전해질적농도위0.04mol·L~(-1)、전압위8V、pH위8.5시,대분이분거제효과최호,가체도90.44%.전압대유궤물거제영향현저,재중성이급약산약감조건하유궤물거제비교은정,전해질대유궤물거제영향교소.대분이분재전화학최화계통중적강해과정흔호지부합료1급반응모형;재최가시험조건하,거제대분이분적속솔상수k_1위0.017 9 min~(-1).
The p-benzenediol wastewater treatment process by electrochemical oxidation in the two-dimensional cell is studied.The influence of the supporting electrolytes concentration,electrolysis voltage,and the initial pH value are investigated by orthogonal experiment.The results showed that the influence of the electrolysis voltage on p-benzenediol removal rate is the most prominent; the p-benzenediol removal rate is stable with neutral and alkalescent condition.The electrochemical oxidation process for p-benzenediol accords with the apparent first-order law.With the initial p-benzenediol concentration of 300 mol·L~(-1),the supporting electrolytes concentration of 0.04 mol·L~(-1),the electrolysis voltage of 8 V and the initial pH value of 8.5,the p-benzenedioi removal rate is 90.44%,the oxidation rate constant is 0.017 9 min~(-1).