光电催化协同高效降解苯酚和去除溶液的COD  

Removal COD and Phenol with High Efficiency by Catalyst with Ray and Electricity

作　　者：秦天羽 郑凯[1] 殷绪华 顾权钟 施成[1] 朱璇睿 

机构地区：[1]南京工程学院环境工程学院,江苏南京211167

出　　处：《化工时刊》2014年第7期1-4,共4页Chemical Industry Times

基　　金：江苏省环保厅项目(2013023);江苏省工业节水减排重点实验室开放基金重点项目(IWCER201202);国家自然科学基金资助项目(51278253);江苏省大学生科技创新项目:166201130046

摘　　要：开发一种电化学方法,高效降解低浓度苯酚溶液。按照钛离子与铜离子比例100∶1,将铜离子掺杂到锐钛型二氧化钛晶格中,获得铜离子掺杂锐钛型二氧化钛,铜离子掺杂前后,晶型保持不变。将掺杂铜离子二氧化钛配制成溶液,涂布于不锈钢表面,经过干燥,获得复合电极;以复合电极为正极、不锈钢网为负极,降解浓度为100 mg/L、体积为6 L苯酚溶液;研究结果表明:当特征波长为380 nm紫外灯、照射强度为1 100μw/cm2、溶解氧浓度为9 mg/L、电压为12 V时,苯酚降解速度最快,2 h内苯酚开环率达到98%,溶液的化学需氧量去除率大于95%,溶液的COD小于10mg/L。A new electrochemical method was availed to decompose low concentration phenol with high efficien-cy. The copper ion was doped into matrix of anatase titanium dioxide according the ratio 100： 1 of Ti ion and copper ion; the composite material doped copper ion can maintain the same crystal form as that of anatase titanium dioxide. The solution mixed with composite material was used to coat onto the surface of stainless steel. The complex electrode was obtained by incineration the surface of stainless steel. During the whole electrochemical reaction, the complex e-lectrode was used to anode; the stainless steel mesh was used to cathode. The chosen phenol concentration was e-qualed to 100 mg / L. The researched results indicated that when the characteristic wavelength of ultraviolet lamp was 380nm, the radiation rate of ultraviolet lamp was 1 100 μw / cm2 , DO was 9 mg / L, voltage were 12 volts, the degra-dation rate of phenol reached a maximum. At present, open loop rate of phenol reached 98% within two hours, re-moval rate of COD was more than 95% , COD of residual solution was smaller than 10 mg / L.

关 键 词：锐钛型 二氧化钛 电极 溶解氧 苯酚 开环率 COD 去除率 

分 类 号：X703[环境科学与工程—环境工程] X78