填充床电化学反应器催化氧化法降解苯酚工艺条件的优化  

Optimization of Process Conditions for Phenol Degradation by Catalytic Oxidation in Packed Bed Electrochemical Reactor

作　　者：田娟[1] 王立章[1] 李鹏[1] 胡云龙[1] 

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116

出　　处：《化工环保》2013年第5期390-393,共4页Environmental Protection of Chemical Industry

基　　金：国家自然科学基金资助项目(50908226);江苏省科技计划项目(BK2011224);江苏省博士后科研资助计划项目(1001022C);中国矿业大学青年科研基金资助项目(2009A038)

摘　　要：采用填充床电化学反应器,以Na2SO4为支持电解质,分别以IrO2-Ta2O5/Ti和PbO2/Ti为阳极,以Ti板为阴极催化氧化降解苯酚。考察了电流密度和进水流量对废水COD去除率、平均电流效率(ACE)和电耗(Esp)的影响。实验结果表明:PbO2/Ti阳极电催化氧化苯酚的效率高于IrO2-Ta2O5/Ti阳极,且PbO2/Ti阳极有更高的ACE和更低的Esp;在以PbO2/Ti为阳极、电流密度为100 A/m2、进水流量为0.8 L/h的条件下,COD去除率最高为90.59%,ACE较高,Esp较低。Phenol was degraded by catalytic oxidation in the packed bed electrochemical reactor using Na2SO4 as supporting electrolyte, Ti board as cathode, IrO2-Ta2O5/Ti and PbO2/Ti as anodes respectively. The effects of current density and influent flow on COD removal rate, average current efficiency （ACE）and power consumption （Esp）were studied. The experimental results show that： Comparing with IrO2-Ta2O5/Ti anode, the PbO2/Ti anode exhibits higher electro-catalytic oxidation efficiency to phenol, higher ACE and lower Esp; Under the conditions of using PbO5/Ti anode, optimum current density 100 A/m2 and influent flow 0.8 L/h, the highest COD removal rate is 90.59% with higher ACE and lower Esp.

关 键 词：填充床电化学反应器 电催化氧化 苯酚 阳极材料 电流密度 废水处理 

分 类 号：X703.1[环境科学与工程—环境工程]