摘要
为考察催化材料α-FeOOH柱撑人造沸石(zeotileartificial pillared by α-FeOOH,ZPF)作为可渗透反应墙(PRB)活性介质的适应性,采用批试验测定反应体系中Fe离子浓度及循环试验中2,4-DNT的降解效果,并通过FTIR表征循环使用后ZPF的结构变化特征。结果表明,ZPF介质材料催化H2O2氧化降解2,4-DNT效果稳定;三次循环试验的降解率分别为48.2%、43.3%和44.6%;Fe离子的溶出水平较低,在中性及偏碱性条件下Fe离子的溶出浓度小于0.3mg/L。ZPF结构稳定,不会对环境产生二次污染。因此,ZPF介质材料可用于催化氧化修复地下水中的硝基苯类污染物。
Batch experiments were conducted to examine the adaptability of catalytic material zeotileartificial pillared by α-FeOOH （ZPF） using as fill-in material in the permeable reactive barrier （PRB） system. The concentration of Fe iron and the degradation of 2, 4-DNT in three circulating experiments using ZPF as catalyst were determined. Then, the ZPF filtrated and collected from the reaction solution was characterized by FTIR. The results demonstrated that the degradation of 2,4-DNT was ultimately stable in the ZPF-H202 reaction system, and the degradation rate was 48.2% , 43.3% , and 44.6% , respectively. The concentration of Fe ions maintained at low levels, and especially under neutral and alkaline conditions it was less than 0.3 mg/L, thus without changeable structure and secondary pollution toward the groundwater environment. ZPF could be used to repair such pollutants as nitrobenzene in the underground through catalytic oxidation.
出处
《环境工程技术学报》
CAS
2012年第5期386-389,共4页
Journal of Environmental Engineering Technology
基金
国家环境保护公益性行业科研专项(200909079)
关键词
ZPF
2
4-DNT
地下水修复
适应性
ZPF
2,4-dinitrotoluene
groundwater remediation
adaptability
