微波诱导Mn/AC去除阳离子红GTL研究  

Removal of cationic red GTL by microwave-induced process with Mn/AC

作　　者：张亚平[1] 陈锦芳[1] 林郑忠[1] 吕春枚[1] 郑丽娥[1] 

机构地区：[1]集美大学生物工程学院,福建厦门361021

出　　处：《化学工程》2011年第9期52-56,共5页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(51004053);福建省自然科学基金资助项目(2009J01033);福建省青年创新人才项目(2008F3076);集美大学创新团队基金项目(2010A007);集美大学优秀骨干教师项目(2008C004);福建省大学生创新性实验项目(Z80076);厦门市杰出青年科技人才创新项目(3502Z20116008)

摘　　要：为了查明阳离子类染料在微波诱导过程中的去除效果和机理,以Mn/AC为诱导催化剂,将阳离子红GTL作为目标物进行了微波诱导去除。考察了催化剂用量、微波功率、染料初始质量浓度、反应过程pH值对阳离子红GTL去除率的影响,通过阳离子红GTL不同工艺去除比较、异丙醇添加及反应过程中溶液的紫外-可见吸收光谱变化探讨了微波诱导过程机制;进一步通过催化剂的多次使用效果及扫描电镜分析研究了金属锰负载对催化剂活性和稳定性的影响。结果表明:在Mn/AC用量4 g,微波功率300 W,阳离子红质量浓度为50 mg/L,pH=7.0,反应时间5 m in的条件下,阳离子红GTL去除率达到98.85%;微波和Mn/AC催化剂具有协同效应;该微波诱导过程同时存在氧化反应和热吸附效应,热吸附效应和氧化反应对CODCr的去除比例为26/10,Mn/AC催化剂具有较高的稳定性。Cationic red GTL wastewater was treated as target by microwave-induced process with Mn/AC as a catalyst in order to identify the removal effect and mechanism of cationic dyes.The effects of catalyst dosage,microwave power,initial mass concentration of dye,pH value,different processes and addition of isopropyl alcohol on the removal of cationic red GTL were investigated.The influence of Mn loaded on the catalyst was further discussed through repeated using of the catalyst and scanning electron microscopy analysis.The results show that synergetic effect of the microwave and Mn/AC catalyst is significant.The removal of cationic red GTL can reach 98.85% under the conditions of pH=7.0,Mn/AC catalyst 4 g,cationic red GTL mass concentration 50 mg/L,microwave power 300 W and reaction time 5 min.Oxidation reaction and thermal adsorption effect exist simultaneously in microwave induced process.The removal of CODCr ratio between thermal absorption and oxidation is 26/10.Mn/AC catalyst has higher stability.

关 键 词：水处理 微波诱导氧化 Mn/AC 染料废水 

分 类 号：X703.1[环境科学与工程—环境工程]