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阿拉尔河下游沉积物对铀的吸附及其影响因素
王国强; 许建新; 韩积斌
2018-09-10
Source Publication铀矿地质
Volume34Issue:05Pages:293-299
Other Abstract采用静态吸附实验,研究了阿拉尔河下游沉积物对水溶液中铀的吸附机制,分析了反应时间、pH值、粒径、固液比、铀初始浓度等因素对沉积物吸附铀的影响,并对其吸附动力学过程和热力学性质进行了探究。结果表明:阿拉尔河河流沉积物对铀的吸附在16 h左右趋于平衡;溶液pH值对沉积物吸附铀具有显著影响,当pH=6~7时,吸附率最大;在一定条件下,吸附率与固液比呈正相关,与粒径及铀初始浓度呈负相关;吸附量与固液比呈负相关,与铀初始浓度呈正相关;吸附动力学过程遵循准二级动力学模型,由两个以上步骤共同控制;吸附热力学符合Freundlich吸附等温模型,沉积物对铀的吸附以多分子层吸附为主,是自发、吸热的熵增过程。
Keyword河流沉积物 静态吸附实验 吸附动力学 吸附热力学
Language中文
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6787
Collection中国科学院青海盐湖研究所
Recommended Citation
GB/T 7714
王国强,许建新,韩积斌. 阿拉尔河下游沉积物对铀的吸附及其影响因素[J]. 铀矿地质,2018,34(05):293-299.
APA 王国强,许建新,&韩积斌.(2018).阿拉尔河下游沉积物对铀的吸附及其影响因素.铀矿地质,34(05),293-299.
MLA 王国强,et al."阿拉尔河下游沉积物对铀的吸附及其影响因素".铀矿地质 34.05(2018):293-299.
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