文章制备了多壁碳纳米管修饰电极(MWCNT-ME)并考察了其对焦化废水中难降解有机物的电催化性能。对MWCNT-ME的表面形貌、有机污染物吸附性能及苯胺和苯酚单项污染物电化学特性进行初步表征分析,在此基础上结合气质联用(GC/MS)检测和COD检测分析对比了MWCNT-ME与IrSnSb金属电极对焦化废水中难降解有机污染物的电化学降解能力。MWCNT-ME对于苯胺和苯酚单项污染物有高的电化学反应活性;MWCNT-ME与粉体吸附介质比较表现出较低的吸附活性,电化学降解是MWCNT-ME处理废水时有机污染物浓度降低的主要因素;在相同工作条件下,MWCNT-ME降解焦化废水中难降解有机物的COD降解效率的高于IrSnSb电极,具有降解焦化废水中难降解有机物的应用潜力。
Multiwall carbon nanotubes mollified electrode(MWCNT-ME) was fabricated and its electrocatalytic activity to refractory organic pollutants of coking wastewater was investigated.The surface morphology,absorption properties and electrochemical behavior of aniline and phenol at MWCNT-ME were analyzed.Using GC/MS and COD test,electrochemical oxidation properties of refractory organic pollutants of coking wastewater using MWCNT-ME and IrSnSb electrode were analyzed.MWCNT-ME showed high electrochemical reactivity to aniline and phenol.Compared with the powder adsorption media,MWCNT-ME showed a lower adsorption activity,and electrochemical degradation is the major factor of degradation of organic pollutants.Under the same working conditions,MWCNT-ME has higher COD removal rate than IrSnSb electrode,which has application potential of electrochemical oxidation to refractory organic pollutants of coking wastewater.