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TiO2-AC电催化氧化含酚废水
  • ISSN号：1673-9108
  • 期刊名称：《环境工程学报》
  • 时间：0
  • 分类：X703.1[环境科学与工程—环境工程] O646[理学—物理化学;理学—化学]
  • 作者机构：中国矿业大学环境测绘学院, 中国矿业大学化学化工学院
  • 相关基金：国家自然科学基金资助项目(50908226);国家自然科学基金创新研究群体科学基金项目(51221462);江苏省自然科学基金基础研究计划资助项目(BK2011224);江苏省研究生培养创新工程(CXLX13-956)
作者： 李鹏, 赵跃民, 王立章, 张波, 张静
关键词： 填充床电化学反应器, TiO2-AC, 传质系数, 氧化选择系数, 紫外吸收光谱
中文摘要：

采用溶胶凝胶法制备了TiO2负载型活性炭颗粒。使用X-射线衍射仪(XRD)、电子扫描显微镜(SEM)对其进行物相组成及微观形貌分析,结果表明,TiO2晶粒主要以锐钛矿及金红石相填充于AC孔径之中,并形成均匀连续的负载膜;以TiO2-AC/AC分别作为填充床电化学反应器的填充物质对苯酚废水进行了电催化氧化对比性研究,引入表征填充床电化学反应器传质特性的传质系数km计算阳极和粒子电极对苯酚废水的氧化选择系数;实验结果表明,在苯酚废水浓度600 mg/L,操作电压为4.0 V,30 A/m2电流密度,流速0.6 L/h反应条件下以TiO2-AC为填充颗粒时填充床电化学反应器体系的传质系数4.032×10-6m/s大于以AC为填料时填充床电化学反应器的传质系数3.281×10-6m/s,电化学反应电荷控制阶段进程延长0.21 h,苯酚废水COD的去除率由73.2%提高至80.4%,体系电流效率亦由40.2%增加至49.5%,能耗降低2.01 kWh/kg COD;TiO2-AC/AC作为填充床电化学反应器填充颗粒对苯酚废水的选择氧化系数分别为0.74和0.80;紫外吸收光谱表明,TiO2-AC/AC作为填料电催化氧化苯酚废水过程中表现出不同的降解路径。

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期刊信息
  • 《环境工程学报》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国科学院生态环境研究中心
  • 主编：曲久辉
  • 地址：北京东黄城根北街16号
  • 邮编：100017
  • 邮箱：
  • 电话：010-62941074
  • 国际标准刊号：ISSN：1673-9108
  • 国内统一刊号：ISSN：11-5591/X
  • 邮发代号:82-448
  • 获奖情况:
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘
  • 被引量:20083