腐殖酸对U(Ⅵ)的吸附性能研究
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天津地质调查中心,天津地质调查中心,天津地质调查中心,天津地质调查中心,天津地质调查中心

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国家“973”项目(编号:2015CB453000)


On Adsorption Performance of Humic Acid on Uranium
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Tianjin Center of Geological Survey,Tianjin Center of Geological Survey,Tianjin Center of Geological Survey,Tianjin Center of Geological Survey,Tianjin Center of Geological Survey

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    摘要:

    砂岩型铀矿的形成与腐殖酸存在密切联系,在铀成矿过程中的化学作用受多方面因素的制约。通过静态吸附试验,探讨了影响腐殖酸吸附U(Ⅵ)的因素,考查了pH值、吸附时间、加入量等的影响。结果表明:pH值对腐殖酸的吸附影响较大,当pH值为6时,吸附率达到最大;少量的腐殖酸就能使U(Ⅵ)吸附率达到98.79%,随着腐殖酸加入量的增加吸附率随之增加,最后趋于平衡;吸附在较短的时间内基本达到平衡。在腐殖酸-粘土、腐殖酸-砂岩二元系统中,混合后吸附效果增加,并且随着腐殖酸加入量的增加吸附率也随之增大,在腐殖酸-粘土-砂岩三元系统中,也得到了相似的吸附趋势。

    Abstract:

    The formation of sandstonetype uranium is closely related to humic acid,and uranium mineralization is restrained by many chemical factors. Adsorption experiment was designed to investigate the adsorption effects of humic acidparameters such as solution Ph, adsorption time and humic acid dosage on uranium (VI). The results show that pH value has great effect on adsorption of humic acid, and adsorption rate reached the maximum when pH value was 6. A small amount of humic acid dosage could make the U (Ⅵ)adsorption rate to 98.79 %. With adsorption rate increasing, the amount of humic acid increase,and finally tended to balance. Adsorption achieved a basic balance in a short time. In the binary system of humic acidclay and humic acidsandstone,mixed adsorption increases with the increasing amount of humic acid. In the ternary system of humicclaysandstone,the similar adsorption result was also obtained.

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曾江萍,安树清,徐铁民,刘义博,张莉娟.2016.腐殖酸对U(Ⅵ)的吸附性能研究[J].地质学报,90(12):3563-3569.
ZENG Jiangping, AN Shuqing, XU Tiemin, LIU Yibo, ZHANG Lijuan.2016. On Adsorption Performance of Humic Acid on Uranium[J]. Acta Geologica Sinica,90(12):3563-3569.

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  • 收稿日期:2016-12-14
  • 最后修改日期:2016-12-14
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  • 在线发布日期: 2017-01-13
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