Xanthate functionalized PAMAM dendrimer (XFPD) chelating ligand for treatment of radioactive liquid wastes
Xanthate functionalized PAMAM dendrimer (XFPD) chelating ligand for treatment of radioactive liquid wastes
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DOI：
10.1016/j.jece.2015.03.013
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发表时间：
2015-06-01
影响因子：
7.7
通讯作者：
Venkatraman, B.
中科院分区：
文献类型：
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作者：
Ilaiyaraja, P.;Deb, Ashish Kumar Singha;Venkatraman, B.
以端羟基多胺树状大分子为原料，合成了首个黄药功能化PAMAM树状大分子螯合配体。研究了XFPD对水溶液中Cu2+和Eu3+金属离子的去除性能。对不同pH下Cu2+和Eu3+金属离子的定量去除研究表明，XFPD在pH为bbbb4时可有效沉淀金属离子，沉淀时间约为3 h。对于pH为bbbb6的Cu-XFPD配合物，沉淀需要添加混凝剂如硫酸铝。XFPD对Cu2+和Eu3+金属离子的负载量分别为0.48和0.95 g g(1)。XFPD螯合配体用于放射性废液（RLW）的处理表明，放射性核素的去除率依次为：Zr-95近似于Eu-154近似于Co-60 (> 99.8) > Ce-144 (98.8) > Sb-125 (83.3) > Ru-106 (79.4) > Mn-55 (54.3) > Cs-137（24.0）。研究表明，XFPD螯合配体在有效去除水中各种放射性核素方面具有潜在的应用前景。(C) 2015 Elsevier Ltd.版权所有。
Xanthate functionalized PAMAM dendrimer (XFPD) chelating ligand, first of its kind, has been synthesized from hydroxyl terminated poly(amido) amine dendrimer. Studies on performance of XFPD in removal of Cu2+ and Eu3+ metal ions were carried out from aqueous solution. Investigation on quantitative removal of Cu2+ and Eu3+ metal ions at various pH revealed that XFPD effectively precipitates the metal ions at pH > 4 with settling time of about 3 h. In case of Cu-XFPD complex at pH> 6, settling requires the addition of coagulating agent like aluminium sulphate. The loading capacity of XFPD for Cu2+ and Eu3+ metal ions was estimated to be 0.48 and 0.95 g g (1), respectively. The XFPD chelating ligand deployed for treatment of radioactive liquid waste (RLW) showed that percentage removal of radionuclides were in the following order; Zr-95 approximate to Eu-154 approximate to Co-60 (> 99.8) > Ce-144 (98.8) > Sb-125 (83.3) > Ru-106 (79.4) > Mn-55 (54.3) > Cs-137 (24.0). It has been demonstrated that XFPD chelating ligand has potential application in effective removal of various radionuclides from aqueous waste. (C) 2015 Elsevier Ltd. All rights reserved.