臭氧催化氧化处理苯酚废水研究  

Degradation of Aqueous Phenol by Catalytic Ozonation

作　　者：洪浩峰[1] 潘湛昌[1] 许磊[1] 肖楚民[1] 徐阁[1] 魏志钢[1] 董奋强[1] 

机构地区：[1]广东工业大学轻工化工学院,广东广州510006

出　　处：《环境科学与技术》2010年第S1期301-304,共4页Environmental Science & Technology

基　　金：广东省科技计划资助项目(2008B010600048)

摘　　要：采用臭氧催化氧化法处理苯酚废水,用自制的催化剂--活性炭负载金属氧化物(Fe/AC,Cu/AC,Mn/AC)对模拟苯酚废水进行臭氧催化氧化比较,并对影响催化氧化效果的几个因素:不同的活性组成分、初始COD、反应时间、pH值进行了分析。结果表明:在每次处理量为500mL苯酚废水时,负载铁氧化物的活性炭催化剂用量为15g、反应时间为40min、COD初始浓度为1000mg/L、pH值为9、臭氧投加量为10mg/L,催化氧化具有较佳的效果;催化剂的重复利用性较好,连续使用11次,COD的去除率仍可达70.4%;通过GC-MS的检测,推测其反应机理为:苯酚→苯二酚类及苯醌类化合物→醛酮类化合物→羧酸类化合物→CO2。The reactive phenol wastewater was treated by ozone catalytic oxidization systems. Different activated carbon supported metal oxides,i.e. Fe/AC(iron carried by activated carbon) ,Cu/AC,Mn/AC,were used in these simulations as the catalysts to get the optimal reaction conditions such as different active component,initial COD,reaction time,and pH value. The results showed that when the Fe/AC is 15g/500mL,reaction time is 40min,the initial COD is 1000mg/L,pH is 9,and adding ozone amount is 10mg/L,COD removal rate can still reach 70.4% after the catalyst was used 11 times continuously. Using GC-MS,we can presume that the reaction mechanism is phenol hydroquinone compounds or benzoquinones compounds aldehydes and ketones compounds carboxylic compounds CO2,H2O.

关 键 词：臭氧 臭氧催化氧化 金属氧化物 活性炭 苯酚 机理 

分 类 号：X703.1[环境科学与工程—环境工程]