印染污泥的活性炭负载过渡金属化合物非均相催化臭氧化  

Catalytic Ozonation of Textile Dyeing Sludge with Heterogeneous Catalysts of Carbon-supported Transition Metal Compounds

作　　者：伏振宇[1] 李志光[1] 郭开[1] 夏兴良[1] 彭海军[1] 何纯莲[2] 

机构地区：[1]湖南农业大学理学院,长沙410128 [2]湖南师范大学医学院,长沙410006

出　　处：《应用化学》2013年第10期1169-1175,共7页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(21176063;21246009)资助项目;湖南省教育厅重点项目(12A085);湖南省科技厅科技计划项目(2013SK3134)

摘　　要：采用湿式浸渍法,将6种含过渡金属(Cu,Fe,Zn,Ni,Mn,Ce)元素的化合物负载在活性炭(AC)上,制得6种催化剂AC/M(M=Cu,Fe,Zn,Ni,Mn,Ce),在室温条件下,催化臭氧化处理苯酚溶液和印染污泥。催化剂AC/M通过Boehm滴定、XRD和BET分析进行表征。苯酚的3种降解方法中,AC/M催化剂的臭氧催化最好,AC/M吸附处理次之,单独臭氧处理的效果最差。在苯酚的降解处理过程中,AC/M催化臭氧化处理苯酚溶液的效率依次为:AC/Fe>AC/Zn>AC/Ni>AC/Ce>AC/Cu>AC/Mn。AC/M催化剂催化臭氧化效果随溶液pH值的增大而增强。AC/M催化剂处理印染污泥的效率依次为:AC/Fe>AC/Zn>AC/Ce=AC/Ni>AC/Cu>AC/Mn,AC/Fe催化臭氧化处理印染污泥可使污泥中有机质含量降低8.17%。Six transition metal（Cu,Fe,Zn,Ni,Mn,Ce） compounds were loaded on activated carbon（AC） by impregnation method to yield six catalysts （ AC/M （ M = Cu, Fe, Zn, Ni, Mn, Ce ） ） that were assessed as ozonation catalysts for the removal of aqueous phenol solution and textile dyeing sludge at room temperature. The resultant products were characterized by Boehm titrations, XRD and BET analyses. The presence of AC/ M catalysts considerably improved their degradati phenol decomposition were evaluated using three on in the ozonation of phenol and textile dyeing sludge. The catalytic systems： a） ozone （ 03 ）, b） AC/M catalysts, and c） a mixture of AC/M catalysts and O3. It was found that catalytic activity toward the degradation of phenol decreased in the order of c 〉 b 〉 a. Among the six catalysts for phenol decomposition, the order of AC/Fe 〉 AC/Zn 〉 AC/Ni 〉 AC/Ce 〉 AC/Cu 〉 AC/Mn was followed. For all the catalysts, their catalytic activities toward phenol degradation increase with the increase of pH value of phenol solution. For practical textile dyeing sludge, the similar order for the decomposition of phenol could be maintained except the catalytic activities of AC/Ce and AC/Ni are comparable. Using AC/Fe catalyst, together with ozone, the organic matter of textile dyeing sludge could be reduced by 8. 17%.

关 键 词：活性炭 苯酚 催化臭氧化 非均相催化 印染污泥 

分 类 号：O643.4[理学—物理化学] X791[理学—化学]