铁基类芬顿催化剂的改性及其应用研究进展

Progress in Modification and Application of Iron-Based Fenton Catalysts

铁基化合物活性高、价格低廉、制备简单且稳定性好,芬顿氧化法可降解多种有毒有害的有机物、适用范围广、设备简单,两者联合组成的铁基类芬顿体系因pH适用范围更广泛、反应后溶铁量低、重复使用性能更好而成为热点话题和研究重点之一。该文综述了近年来铁基类芬顿催化剂的改性方法及其机理探究,探讨了其对印染废水、焦化废水、含酚废水、含抗生素废水、垃圾渗滤液等废水中难降解有机污染物的去除效能、降解机制以及降解过程中的影响因素(如p H值、催化剂投加量、过氧化氢投加量等),以期为其在废水处理的实际应用提供一定的理论基础。

Iron-based compounds have many advantages such as high activity,low price,simple preparation and high stability.Fenton oxidation can degrade many kinds of toxic and harmful organic matter,and it also has wide application as well as simple equipment.The combination of them can compose the iron-based Fenton system which is one of hot topics and research priorities nowadays because of the wider range of pH,the lower mass of ferolysis and the better reuse performance.This paper summarizes the modification methods of iron-based Fenton catalysts in recent years,overviewing iron-based Fenton catalysts such as zero-valent iron Fenton catalysts,iron oxide Fenton catalysts and basrix-loaded type iron-based Fenton catalysts which can activate hydrogen peroxide effectively,exploring its efficiency and degradation mechanism in disposing of printing and dyeing wastewater,coking wastewater,phenolic effluent,antibiotic wastewater and spam leachate.This paper also summarizes the influencing factors in the degradation process,including pH value,catalyst dosage,hydrogen peroxide dosage and so on.In order to provide some theoretical basis for its practical application in wastewater treatment.