首页> 外文期刊>Journal of Applied Polymer Science >Effect of pH, ionic strength, and temperature on uranyl ion adsorption by poly(N-vinyl 2-pyrrolidone-g-tartaric acid) hydrogels
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Effect of pH, ionic strength, and temperature on uranyl ion adsorption by poly(N-vinyl 2-pyrrolidone-g-tartaric acid) hydrogels

机译:pH,离子强度和温度对聚(N-乙烯基2-吡咯烷酮-g-酒石酸)水凝胶吸附铀酰离子的影响

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摘要

Poly-electrolyte N-vinyl 2-pyrrolidone-g-tartaric acid (PVP-g-TA) hydrogels with varying compositions were prepared in the form of rods from ternary mixtures of N-vinyl 2-pyrrolidone/tartaric acid/water. The effect of external stimuli, such as the solution pH, ionic strength, and temperature, on uranyl adsorption by these hydrogels was investigated. Uranyl adsorption capacities of the hydrogels were determined to be 53.2-72.2 (mg UO22+/g dry gel) at pH 1.8, and 35.3-60.7 (mg UO22+/g dry gel) at pH 3.8, depending on the amount of TA in the hydrogel. The adsorption studies have shown that the temperature and the ionic strength of the swelling solution also influence uranyl ion adsorption by PVP-g-TA hydrogels. (C) 2000 John Wiley & Sons, Inc. [References: 22]
机译:由N-乙烯基2-吡咯烷酮/酒石酸/水的三元混合物以棒状制备具有不同组成的聚电解质N-乙烯基2-吡咯烷酮-g-酒石酸(PVP-g-TA)水凝胶。研究了外部刺激(例如溶液的pH,离子强度和温度)对这些水凝胶吸附铀酰的影响。根据水凝胶中TA的量,确定水凝胶中的铀酰吸附能力在pH 1.8时为53.2-72.2(mg UO22 + / g干凝胶),在pH 3.8时为35.3-60.7(mg UO22 + / g干凝胶)。 。吸附研究表明,溶胀溶液的温度和离子强度也会影响PVP-g-TA水凝胶对铀酰离子的吸附。 (C)2000 John Wiley&Sons,Inc. [参考:22]

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