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合成了以丙烯腈(AN)-二乙烯基苯(DVB)-甲基丙烯酸(MA)为骨架、含有偕胺肟基团的大孔螯合树脂,研究了DVB、MA、致孔剂用量及胺肟化反应条件对树脂阴离子交换性能的影响,考察了溶液pH、吸附时间、铀初始质量浓度对丙烯腈骨架螯合树脂吸附容量的影响。结果表明:以甲苯为致孔剂,在交联度为10%,甲基丙烯酸用量为10%条件下,合成树脂的阴离子交换容量为4.3mmol/g干树脂;在25℃、pH=5、吸附2h、溶液中碳酸钠质量浓度为50g/L、铀质量浓度为300mg/L条件下,吸附接近饱和,吸附容量为20.0mg/g干树脂。
Abstract：Macroporous chelating resins with amidoxime groups were prepared after the crosslinked copolymers based on acrylonitrile(AN)-divinylbenzene(DVB)-methylacrylate(MA)were synthesized via suspensin polymerization method.The effects of dosages of DVB,MA,pore former and other reaction factors on the exchange capability of the chelating resins were investigated.The effects of pH,adsorption time,and initial uranium concentration on adsorption properties of the resins were examined.The results indicate that the anion exchange capacity of the synthesized resin is 4.3mmol/g when toluene is chosen as a pore former,degree of crosslinking is 10%and content of MA is 10%.The maximum adsorption capacity is observed at the pH =5.0and 25 ℃.Adsorption equilibrium is achieved in 2happroximately.Adsorption capacity of the resin for uranium is 20.0mg/g when initial concentration of Na2CO3 is 50g/L and uranyl concentration is 300mg/L.
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基本信息:
DOI：10.13355/j.cnki.sfyj.2015.05.002
中图分类号:TQ324.8
引用信息:
[1]郎哲思,封宇,王凤菊等.吸附铀的丙烯腈骨架螯合树脂的研制[J].湿法冶金,2015,34(05):356-360.DOI:10.13355/j.cnki.sfyj.2015.05.002.
基金信息: