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首页> 外文期刊>Environmental Science & Technology >Electrodriven Selective Transport of Cs~+ Using Chlorinated Cobalt Dicarbollide in Polymer Inclusion Membrane: A Novel Approach for Cesium Removal from Simulated Nuclear Waste Solution
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Electrodriven Selective Transport of Cs~+ Using Chlorinated Cobalt Dicarbollide in Polymer Inclusion Membrane: A Novel Approach for Cesium Removal from Simulated Nuclear Waste Solution

机译：电驱动的Cs〜+离子在聚合物包裹膜中使用氯化双水合钴选择性迁移：从模拟核废液中去除铯的新方法

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摘要

The work describes a novel and cleaner approach of electrodriven selective transport of Cs from simulated nuclear waste solutions through cellulose tri acetate (CTA)/poly vinyl chloride (PVC) based polymer inclusion membrane. The electrodriven cation transport together with the use of highly Cs~+ selective hexachlorinated derivative of cobalt bis dicarbollide, allows to achieve selective separation of Cs~+ from high concentration of Na~+ and other fission products in nuclear waste solutions. The transport selectivity has been studied using radiotracer technique as well as atomic emission spectroscopic technique. Transport studies using CTA based membrane have been carried out from neutral solution as well as 0.4 M HNO_3, while that with PVC based membrane has been carried out from 3 M HNO_3. High decontamination factor for Cs~+ over Na~+ has been obtained in all the cases. Experiment with simulated high level waste solution shows selective transport of Cs~+ from most of other fission products also. Significantly fast Cs~+ transport rate along with high selectivity is an interesting feature observed in this membrane. The current efficiency for Cs~+ transport has been found to be ～100%. The promising results show the possibility of using this kind of electrodriven membrane transport methods for nuclear waste treatment.
机译：这项工作描述了一种新型的，更清洁的方法，可以通过模拟的三废纤维素溶液，通过三醋酸纤维素（CTA）/聚氯乙烯（PVC）的聚合物包裹膜对Cs进行电驱动的选择性运输。电驱动的阳离子迁移以及高双联双氰钴酸钴的高Cs〜+选择性六氯化衍生物的使用，可以实现从核废料溶液中高浓度的Na〜+和其他裂变产物中选择性地分离Cs〜+。已经使用放射性示踪剂技术和原子发射光谱技术研究了运输选择性。使用CTA基膜的转运研究已经从中性溶液以及0.4 M HNO_3中进行，而使用PVC基膜的转运研究已经从3 M HNO_3中进行了。在所有情况下，都获得了高于Na〜+的Cs〜+的高去污因子。模拟高放废物解决方案的实验表明，大多数其他裂变产物也选择性迁移了Cs〜+。在这种膜中观察到一个有趣的特征，即快速的Cs〜+传输速率以及高的选择性。已经发现，目前Cs〜+传输的效率约为100％。令人鼓舞的结果表明，使用这种电驱动膜运输方法进行核废料处理的可能性。

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  • 来源
    《Environmental Science & Technology》 |2014年第21期|12994-13000|共7页
  • 作者

    Sanhita Chaudhury; Arunasis Bhattacharyya; Asok Goswami;

  • 作者单位

    Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India;

    Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India;

    Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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