摘要
以双酚A(BPA)为代表的环境内分泌干扰物的广泛使用带来了环境污染和生态健康风险。本实验以BPA为研究对象,对比了BDD电极、Ru O2电极与自制的Ti/Sn O2-Sb和Ti/Sn O2-Sb/Pb O2电极在硫酸钠电解质中电催化降解BPA的效果,研究了电流密度、电解质浓度等因素对BPA降解的影响。结果表明,BDD电极相比于Sn O2、Pb O2和Ru O2电极,对内分泌干扰物BPA电化学处理效果更好;以BDD电极为阳极,Ti板为阴极,电流密度为5m A/cm2,电解质浓度为0.05M Na2SO4时,20mg/L的BPA溶液在两小时内的去除率达到90%以上,TOC的去除率达到56%左右;电流密度增大,去除效果提高,但是电流效率下降;增加Na2SO4的浓度有助于BPA的降解过程。
The widespread uses of environmental endocrine disruptors, such as bisphenol A （ BPA）, have caused serious environmental pollution and ecological health risks. In this study, the electrochemical degradation of BPA in sodium sulfate electrolyte was comparatively investigated using the BDD electrode, the RuO2 electrodes, Ti/SnO2 and Ti/SnO2/PbO2 electrodes. The effects of current density, electrolyte concentration were correspondingly studied. The results showed that the BDD electrode is superior to the SnO2, PbO2 and RuO2 electrodes for the electrochemical degradation of BPA. The removal rate higher than 90% and TOC removal rate higher than 56% were achieved when the BDD anode and Ti plate cathode were used at 5 mA/cm2 in 0.05 M Naz SO4. With increased current density, the removal efficiency increased, but the current efficiency dropped.
出处
《山东化工》
CAS
2015年第12期153-155,157,共4页
Shandong Chemical Industry
基金
国家自然科学基金(51278386)
苏州市科技局国际合作项目(SH201218)
