It is great significance to develop technology of efficient separation and extraction for Cs+ in the Qinghai salt lake.AMP functionalized random copolymers were prepared by covalent graft copolymers P(styrene-co-acrylic acid)[P(St-co-AA)] and P(N-isopropylacrylamide-co-acrylic acid)[P(NIPAM-co-AA)] of ammonium phosphomolybdate (AMP) with specific adsorption for Cs+.Then,nanotubes were constructed using P(St-co-AA)-AMP and P(NIAPM-co-AA)-AMP to achieve effective separation and extraction of Cs+ in brine.The results shown that the adsorption process of P(St-co-AA)-AMP and P(NIAPM-co-AA)-AMP nanotubes for Cs+ followed the quasi-second-order kinetic model and was belong to chemical adsorption.The adsorption equilibrium reached within 25h,and the equilibrium adsorption capacities were 13.02 and 16.97mg/g,respectively.The results shown that P(NIAPM-co-AA)-AMP nanotubes were considered to be the most suitable adsorption material.
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基金资助
青海省基础研究计划(2020-ZJ-764);国家自然科学基金青年基金(21804078)
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