硅藻土的研究现状及进展

硅藻土具有多孔性、密度小、比表面积大、吸附性好、耐酸、耐碱、绝缘等特性，并且中国硅藻土矿储量丰富，所以硅藻土作为一种新型的吸附材料近年来已被广泛应用于许多工业部门。本文在简单介绍硅藻土化学成分、表面特性等性质的基础上，综述了近年来国内外用聚苯胺、聚乙烯亚胺等聚合物对硅藻土进行改性的方法，同时针对不同的工业废水介绍了目前硅藻土的改性方法以及改性前后的硅藻土作为吸附材料对工业废水中的染料、重金属离子以及非极性芳香烃吸附的研究进展，并展望了硅藻土作为新型的吸附材料的发展趋势。

The Present Situation and Development of Diatomite

The diatomite is characteristic of Porosity,low density,high superficial area,good adsorbability,acid resistant,alkali resistance,insulation and rich reserves.As a result,the diatomite is widely used in many industrial sector as a kind of new adsorption material.The character of diatomite including chemical components and surface characteristics is briefly introduced,then describes synthetically the method of diatomite modified by the polymer such as polyaniline and polyethyleneimine.The recent research pro...