Synergistic effects of different co-monomers on the uranium adsorption performance of amidoximated polyethylene nonwoven fabric in natural seawater
Synergistic effects of different co-monomers on the uranium adsorption performance of amidoximated polyethylene nonwoven fabric in natural seawater
复制标题
不同共聚单体对偕胺肟化聚乙烯非织造布天然海水中铀吸附性能的协同作用
DOI：
10.1007/s10967-017-5639-6
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发表时间：
2018-01-01
影响因子：
1.6
通讯作者：
Wu, Guozhong
中科院分区：
文献类型：
--
作者：
Li, Rong;Ma, Hongjuan;Wu, Guozhong
将几种共聚单体与丙烯腈共接枝到聚乙烯无纺布上制备酰胺肟化吸附剂。结果表明，在天然海水中，接枝共聚单体对偕胺肟化吸附剂的铀吸附容量和吸附选择性的影响顺序为：丙烯酰胺（AAm）<丙烯酸（AA）<柠檬酸（ITA）<甲基丙烯酸（MAA），这与在加铀卤水中的结果一致。在天然海水中浸泡56 d后，与MAA共接枝的偕胺肟化吸附剂对铀的吸附容量最大（1.05 mg/g），对铀/钒的吸附选择性最好（U/V质量比约为0.95）。
Several co-monomers were co-grafted with acrylonitrile onto polyethylene nonwoven fabric to prepare amidoximated sorbents. The grafted co-monomer was found to play an important role in the uranium adsorption capacity and sorption selectivity of amidoximated sorbent in natural seawater in the following order: acrylamide (AAm) < acrylic acid (AA) < itaconic acid (ITA) < methacrylic acid (MAA), which agreed well with the result in U-spike brine. The amidoximated sorbent co-grafted with MAA exhibited the highest uranium adsorption capacity (1.05 mg/g) and the best uranium/vanadium sorption selectivity (U/V mass ratio: ~ 0.95) after 56 days of immersion in natural seawater.