摘要
采用电化学氧化法处理黄连素制药废水,探讨了过程中黄连素的去除动力学,考察了阳极材料、偏压、初始pH及Cl-浓度等因素对废水中黄连素去除的影响。结果表明,黄连素在Pt/Ti等四种阳极上的电化学降解均符合假一级动力学;电化学生成的活性氯对黄连素的降解起重要作用,阳极偏压和初始Cl-浓度是影响黄连素降解速率的控制因素;在以Pt/Ti为阳极,阳极偏压为2.0～2.5V,废水初始pH为5.0～9.0,Cl-浓度为0.10mol/L条件下,电化学过程对黄连素降解动力学速率常数较高;黄连素易降解而生成有机酸等小分子化合物,其去除率达到90%以上。
Electrochemical process was applied to the treatment of berberine pharmaceutical wastewater. The degradation kinetics of berberine was studied, and the effects of anode, bias potential, initial pH and Cl- concentration on the berberine degradation were discussed. The results showed that the degradation of berberine on four anodes including Pt/Ti followed the pseudo-first order kinetics; electro-generated active chlorine played an important role on the degradation of berberine, anodie bias and initial Cl- concentrations were the control factors of berberine degradation; under the optimal conditions of bias potential of 2.0-2.5 V, initial pH of 5.0-9.0 and Cl- concentration of 0. 10 mol/L, the pseudo-first order kinetic constant kept high. Berberine was easily degraded into organic acid or other small molecular compounds, and the removal efficiency of berberine reached above 90%.
出处
《环境工程技术学报》
CAS
2013年第2期98-103,共6页
Journal of Environmental Engineering Technology
基金
国家自然科学基金项目(21107103)
国家水体污染控制与治理科技重大专项(2012ZX07202-002)
关键词
黄连素废水
电化学
PT
Ti阳极
活性氯
动力学
berberine wastewater
electrochemical process
Pt/Ti anode
active chlorine
kinetics
