类Fenton氧化在污染土壤修复中的应用

Applitation of Like-Fenton oxidation on remediation of contaminated soil

传统的Fenton氧化要在酸性条件下进行,使用传统的方法处理污染土壤会造成土壤生态环境的破坏。为了保护生态环境,在不改变土壤pH值的条件下,利用铁盐和铁的氧化物矿石作催化剂催化H2O2氧化去除土壤中的污染物。研究结果表明:不同的催化剂催化氧化去除污染物的能力不同,可溶态的亚铁盐和铁盐催化效果比不可溶的固态铁矿石要好,其中可溶态的硫酸亚铁催化反应的效果最好,反应60min后,污染物的最大去除率能达到65%以上;不可溶的铁矿石中磁铁矿的催化效果比赤铁矿要好些,污染物的去除率能达到55%以上。

Acidic pH was often used to optimize Fenton oxidation efficiency. However, acidic soil environments might cause dramatic ecological impacts. In order to protect the soil econological environment like-Featon oxidation at natural soil pH has been carried out. The rusult shows that dissolved iron compounds were more effective than un-dissolved minerals and the like-Fenton oxidation reaction catalyzed by ferrous sulfate is the best, after reaction 6o minutes the removal of pllutant can reach 65%. magnetite was more effective than hematite Among the un-dissolved iron compounds and the removal of pollutant can reach 55%.