类活性炭材料强化去除焦化废水中有机污染物的研究

摘要

Two kinds of analogous activated carbon materials:coke power and activated coke have been modified by three methods:HNO3 oxidation,HNO3-N2 combination and loaded TiO2. By comparing the removing effects on cok-ing wastewater,the optimum modification method is determined. The changes of activated carbon composition,crys-tal structures and surface functional groups of the modified materials before and after modification are characterized by SEM/EDS,XRD and FTIR. The results show that using HNO3-N2 composition and activation can not only in-crease the functional group,but also increase the porosity. The activated coke loaded with TiO2 having catalytic oxi-dation action can effectively increase the removing effect on organic matter.%选取焦粉和活性焦两种类活性炭材料,采用HNO3氧化、HNO3-N2联用和负载TiO2对其进行改性.通过对焦化废水去除效果的比较,确定最佳改性方法.并采用SEM-EDS、XRD和FTIR对改性前后类活性炭材料的组成、晶体结构和表面官能团的变化进行分析.结果显示,焦粉采用HNO3-N2联用活化不仅可以增加其表面官能团,还能够增加内部孔隙率;活性焦采用负载具有催化氧化作用的TiO2可以有效提高对有机物的去除效果.