铝氧化物-水界面化学及其在水处理中的应用

天然水体中,铝氧化物矿物表面上的吸附等各种反应在很大程度上影响着金属阳离子、无机阴离子和一些天然有机物的迁移转化和归趋.在水处理等工业领域中,铝氧化物由于其水合表面的吸附能力而被用做离子交换剂和催化剂载体.因此,对铝氧化物表面化学过程的研究具有重要意义.铝氧化物-水界面上的反应十分复杂,对各种无机、有机污染物的吸附结合能力取决于氧化物固相表面性质、溶液条件和吸附质的性质.从对铝氧化物表面荷电特性和吸附活性的认识出发,就各种铝氧化物的结构特征和表面反应活性及其在水处理技术中的应用进行了简要综述.

Chemistry of aluminum (hydr)oxides-water interface and its application in water treatment

The adsorption of metal cations, inorganic anions and natural organic molecules on the aluminum mineral surfaces play an important role in the transfer and fate of these absorbates in the natural aquatic environment. And in the technological processes, such as water treatment process, alumina has been widely used as the adsorbent and catalyst carriors for the absorbability of surface. Thus, the study on the chemistry of alumina reactions in water is of great importance. The chemistry of alumina-water interface is complex, the adsorption ability to inorganic and organic compounds were determined by the properties of alumina surfaces in aqueous solution, the solution conditions and the nature of adions. The surface charging properties and adsorptive reactivity were summarized, and the structure characteristics of alumina, surface reactivity and its application in water treatment technology were briefly reviewed.