【摘 要】
：
A kind of Levextrel resin separation process was developed for separation of indium (Ⅲ), gallium (Ⅲ), and zinc (Ⅱ) from aqueous sulfate solution with Levextr
【机 构】
：
Department of Environmental Science and Engineering,School of Environmental Science and Engineering
论文部分内容阅读
A kind of Levextrel resin separation process was developed for separation of indium (Ⅲ), gallium (Ⅲ), and zinc (Ⅱ) from aqueous sulfate solution with Levextrel resin containing di(2-ethylhexyl) phosphoric acid (CL-P204). The aim of the research is to collect preliminary results for a pilot-scale production. Properties of adsorbing indium (Ⅲ), gallium (Ⅲ),and zinc (Ⅱ) from sulfate solution with the Levextrel resin were first studied by batch operation and column operation. The optimum pH, adsorption capacities and concentrations of stripping agents for indium (Ⅲ), gallim (Ⅲ) were tested. The separation order of indium (Ⅲ), gallim (Ⅲ), and zinc (Ⅱ) from sulfate solution with CL-P204 Levextrel resin was found that indium (Ⅲ) could be first separated by adsorbing at the acidity of 1.0 mol/L whereas gallium (Ⅲ) and zinc (Ⅱ) could not, and they were adsorbed together by adsorbing at pH = 2.8, then separated from each other by stripping with 0.1 and 0.5mol/L hydrochloric acid, respectively. The recoveries of three metal ions were all higher than 99%. The cyclic properties of this resin are well.
其他文献
A second order heat equation with convection in an infinite medium is studied. Suitable similarity transformations are used to reduce the parabolic heat equatio
A differential pulse voltammetric method was developed for the sensitive and selective determination of Cu(Ⅱ) at 4-methoxy-2,6-bis(3,5-dimethylpyrazoyl)-1,3,5-
The influence of Gd doping at La-site on the electrical transport properties and the colossal magnetoresistance of La0.7-xGdxSr0.3MnO3 (x = 0.00, 0.10, 0.15, 0.
The microstmcture characteristics of AlSiCuMg cast alloys were studied with different Cu content and the gradual solution treatment by DSC, SEM, TEM and mechani
流行病学研究显示,原因不明性卒中患者中的卵圆孔未闭(patent foramen ovale,PFO)患病率显著高于普通人群,二者之间的密切联系支持反常性栓塞为卒中病因的假说.然而,在原因不
Thermo-gravimetric analyzer (TGA) was used to determine the thermal behavior of stainless steelmaking dust and FTIR was used to detect the components of off-gas
本文主要讨论的是留学生在使用副词时出现的错序现象。文中的语料来源于留学生的作文和北语HSK动态作文语料库。文中首先简单介绍了现代汉语中副词的本体研究情况;接着分析了
The corrosion behavior of tantalum and its nitrides in stirring NaOH solutions was researched by potenfiostatic method, cyclic voltammetry and XPS. The results
Internet远程教育的出现,使整个教育思想、教育观念、教育体制、办学模式以及整体学习环境和个体学习环境都发生了变革,也给英语教学带来了新的活力.文中阐述的Internet运用
分析了现状交叉口转向交通量观测方法的不足 ,提出了通过观测进出口交通量和部分易观测转向交通量来推算各个转向交通量的精确算法 ,并给出了易观测转向交通量的布点方法及其