期刊论文

Zhou, Shu-Kui(zhoushukui@usc.edu.cn)

中文

中国有色金属学报

1004-0609

2015

25

9

2604-2611

10.19476/j.ysxb.1004.0609.2015.09.037

国家自然科学基金资助项目

本校为第一且通讯机构

针对铀矿中酸法含铀废水处理的难点,利用木屑制备季铵盐型螯合吸附剂(MS)强化其除铀效果。研究环氧氯丙烷(ECH)添加量、二乙烯三胺(DETA)添加量、醚化反应时间、接枝反应时间对木屑的改性效果及其对废水中U(VI)吸附效果的影响,获取制备MS的最佳工艺条件。对MS进行表征分析并探讨吸附剂的改性机理。单因素实验结果表明:随着ECH、DETA添加量的增加及醚化时间的延长,MS对U(VI)的吸附性能先增大后减小;而随着接枝时间的增加,MS对U(VI)的吸附效果先增大而后基本保持不变。正交优化实验结果表明:对U(VI)吸附性能的影响醚化反应时间最大,接枝反应时间次之,ECH、DETA添加量最小。最优制备条件为ECH添加量...

The problem of processing uranium wastewater in the uranium milling plant was studied by preparing a kind of quaternary ammonium salt chelate adsorbent (MS) to strengthen the effect of adsorbing uranium. The effects of epichlorohydrin dosage, diethylenetriamine dosage, etherification reaction time, grafting reaction time on the modification effect of sawdust and its U(VI) adsorption in wastewater were studied, and the optimal technological conditions for preparing MS were gotten. And the MS was characterized and the modification mechanism of the adsorbent was studied. The single factor test re...