氨基酸功能基高分子吸附剂的制备及从盐湖卤水中吸附铀

Preparation of Amino Acid Functional Polymer Adsorbent and Adsorption of Uranium From Salt Lake Brine

借助化学改性手段制备了多种氨基酸功能基高分子吸附剂(LPPD),并考察了其从盐湖卤水中吸附铀的性能。结果表明:所制备的LPPD对从盐湖水中吸附铀有较好性能,吸附量达2.06 mg/g,吸附剂中赖氨酸功能基团与铀酰离子可形成3种稳定配位结构,并以化学控制为主的单分子层吸附机制吸附铀。

Multiple macromolecules with amino acid group were synthesized by chemical modifications,and its adsorption properties for uranium in salt lake brines were examined.The results show that the macromolecules with amino acid group can be used to adsorb uranium in salt lake brines,and the adsorption capacity for uranium can reach 2.06 mg/g.The amino acid group in the adsorbent can forming 3 types of coordination structures with uranyl ion.The adsorption mechanisms are single layer adsorptions and controlled by chemical reaction mainly.