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Influence of Humic Acid on the Sorption of Uranium(IV)to Kaolin
Author(s): Nick Evans, Peter Warwick, Tara Lewis, Nick Bryan, Wang Yuexin, Qi Xinge
Pages: 35-
40
Year: 2011
Issue:
1
Journal: Humic Acid
Keyword: 四价铀; 腐植酸; 三元系统; 线性可加模型;
Abstract: 在土壤中,对放射性废物处理的安全性评估,要求评价放射性核素的迁移.PH值从4到8,腐植酸浓度从15 mg/kg到200 mg/kg条件下,腐植酸对高岭土吸附四价铀的影响试验表明,没有腐植酸的情况下,20%~40%的四价铀存在于溶液中,pH值越高,吸附作用越强.在腐植酸的存在下,随着腐植酸浓度和PH值的升高,四价铀的溶解度随之增大,四价铀在腐植酸中的可溶性最高可达90%.腐植酸吸附和四价铀的吸附是对...
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