季铵盐表面活性剂改性沸石对水体污染物吸附研究进展

Research progress of adsorption for the pollutants in aqueous solution by quaternary ammonium surfactant modified zeolites

随着工农业的快速发展,水中的有机物污染已经对生态环境造成了严重的污染。沸石具有比表面积大、稳定性好、阳离子交换能力强等优点,被广泛应用于水体污染物的吸附。季铵盐阳离子表面活性剂表面活性高,易于附着于沸石表面从而改变其表面电性,常被用作沸石的改性剂。综述了沸石的结构特性、季铵盐阳离子表面活性剂与沸石的相互作用、季铵盐阳离子表面活性剂改性沸石与吸附质之间的相互作用。综述改性沸石对药物、重金属离子、水溶性染料、氨氮以及酚类化合物吸附的研究进展。提出了表面活性剂改性沸石及其在水污染去除中存在的一些问题及可能的发展方向,为改性沸石在环境保护方面的实际应用提供理论指导。

With the rapid development of industry and agriculture,organic pollutants in aqueous solution has caused serious influence for ecological environment.Zeolite have the advantages of large surface area,good stability and strong cation exchange ability.Therefore,it is widely used in adsorption of pollutants in aqueous solution.Quaternary ammonium cationic surfactant is often used as a modifier for zeolite because it has high surface activity,easy to adhere to the zeolite surfaces and change surface electrical properties of zeolite.The structural properties of zeolite,the quaternary ammonium cationic surfactant interaction with zeolite and modified zeolite interaction with adsorbent are reviewed.Research progress on the adsorption of drugs,heavy metal ions,water-soluble dyes,ammonia nitrogen and phenolic compounds by quaternary ammonium cationic surfactant modified zeolite is also introduced.It puts forward some problems and possible development directions in the use of modified zeolite in water pollution removal.It provides theoretical guidance for the practical application of modified zeolite environmental protection.