| 木质素吸附剂合成及吸附铀性能研究 |
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| 引用本文： | 陈志强,刘浩,黄永,李宏宇.木质素吸附剂合成及吸附铀性能研究[J].铀矿冶,2011,30(1). |
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| 作者姓名： | 陈志强 刘浩 黄永 李宏宇 |
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| 作者单位： | 1. 安阳师范学院,河南,安阳,455000
2. 核工业北京化工冶金研究院,北京,101149 |
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| 摘 要： | 利用成本低廉、来源广泛的可再生资源——酸析木质素作为主要原料,通过两步反应法:1)Mannich反应引入弱碱性基团,2)O-烷基化反应引入强碱性基团,制备出同时具有强碱性、弱碱性的木质素基吸附材料。采用红外光谱、元素分析对产物进行表征,结果表明,在木质素分子结构上成功引入了胺基基团;并且通过静态吸附试验,测试了该吸附剂在低浓度含铀溶液中的吸附效果。试验结果表明,当溶液的pH值为2.0,铀质量浓度为6 mg/L,吸附剂的用量为10 g/L时,溶液中铀的去除率可以达到93%以上。
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| 关 键 词： | 酸析木质素 吸附剂 改性 铀 |
Synthesis and uranium adsorption performance of a novel modified lignin-based adsorbent |
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| CHEN Zhi-qiang,LIU Hao,HUANG Yong,LI Hong-yu.Synthesis and uranium adsorption performance of a novel modified lignin-based adsorbent[J].Uranium Mining and Metallurgy,2011,30(1). |
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| Authors: | CHEN Zhi-qiang LIU Hao HUANG Yong LI Hong-yu |
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| Affiliation: | CHEN Zhi-qiang1,LIU Hao2,HUANG Yong2,LI Hong-yu2(1.Anyang Normal University,Anyang 455000,China,2.Beijing Research Institute of Chemical Engineering and Metallurgy,CNNC,Beijing 101149,China) |
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| Abstract: | The modified lignin-based adsorbent containing the strong-base and weak-base group,was prepared by two-step chemical modification of acid-precipitation lignin,which is a low-cost and abundant renewable natural polymer: 1) weak-base group introduced by Mannich reaction;2) strong-base group introduced by O-alkylation reaction.The adsorbent was characterized by Fourier transform infrared spectroscopy(FT-IR) and elementary analysis(EA),which demonstrated amino group was successfully introduced into the lignin.I... |
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| Keywords: | acid-precipitation lignin adsorbent modification uranium |
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