中国非金属矿工业导刊Issue(4)：20-23,25,5.
正长石去除镉离子的试验研究
Experimental Studies of the Interaction of Aqueous Cadmium Ion With Orthoclase
摘要
Abstract
The interactions between cadmium-bearing solution and orthoclase have been studied in the conditions of different mixed periods and pH value, Cd-feldspar was synthesized. The concentrations of Cd2+ were reduced with the reaction time extending, the remove rate of Cd2+ was up to 96% after 120 hours. The Cd2+ removal effect is almost up to equilibrium, about 78.40%, in the weak acid condition about pH 6. The phase composition of the reaction results was determined by XRD, showing the silicate phase cadmium-bearing occurred. The analysis of XPS were used to ascertained that the Cd 3d5/2 binding energy is 406.12eV, suggesting that Cd entered the structure of orthoclase, ion exchange reaction happened and ion bond formed. Both reactions of adsorption and ion exchange were deduced for the removal of cadmium pollution. It is concluded that wide distributed and amount of feldspar has a function of treating the Cd2+ pollution in the water.关键词
正长石/表面吸附/离子交换/镉污染Key words
orthoclase/ surface adsorption/ ion exchange/ pollution of cadmium分类
天文与地球科学引用本文复制引用
刘瑞,王志华,于娜,徐强..正长石去除镉离子的试验研究[J].中国非金属矿工业导刊,2012,(4):20-23,25,5.基金项目
国家自然基金项目(41172043) （41172043）
吉林省教育厅项目(2005156). （2005156）
