复合改性蒙脱土在污水处理中的应用研究进展

Application and Research progress of composite modified montmorillonite in wastewater treatment

摘要:

随着经济社会的发展，污水处理问题已成为人们关注的热点。蒙脱土因孔结构丰富、储量丰富且廉价易得而被广泛用于污水处理领域，目前关于蒙脱土吸附材料的研究多采用酸改性、有机改性等于单一改性手段提升其吸附能力，但单一改性蒙脱土存在功能单一、活性较差等问题。诸多研究者将目光集中于复合改性，文章对复合改性蒙脱土，酸-有机改性、无机-有机改性和有机阴离子-阳离子活性剂改性等的研究进展进行了综述，并对复合改性蒙脱土的制备过程和吸附机理进行了分析。提出今后复合蒙脱土研究的主要方向是合成可利用多种方式实现对所有污染物的无差别处理且易于从溶液中分离再生的蒙脱土，如合成既有吸附性，又有光催化和Fenton氧化能力的复合改性蒙脱土，以期为蒙脱土在实际污水处理中提供一定的理论参考。

Abstract:

With the development of economy society, wastewater treatment has become the focus of people's attention. Montmorillonite has been widely used in the field of wastewater treatment because of its advantages of cheap, easy to obtain and abundant reserves. At present, adsorption materials based on montmorillonite mainly focuses on single modification, such as acid modification, organic modification, but the single modification of montmorillonite has the problem of single function and poor activity. In this paper, the research progress of composite modified montmorillonite, for example, acid-organic modification, inorganic-organic modification and organic anionic cationic surfactant modification are reviewed. The preparation process and adsorption mechanism of composite modified montmorillonite are analyzed. The main research directions in the future are proposed. It is suggested that the main research direction of composite montmorillonite in the future is to synthesize the montmorillonite which can be easily separated from solution and can treat all pollutants in a variety of ways, such as the synthesis of composite montmorillonite with adsorption, photocatalytic and Fenton oxidation ability. This paper may provide some reference for the practical application of montmorillonite in the area of wastewater treatment in future.