高锰酸钾改性凹土对钴离子的吸附性能研究

Study on Adsorption of Cobalt Ions on Modified Concave Soil by Potassium Permanganate

首先,测量了不同浓度下钴离子溶液的吸光度,并通过线性拟合得到了相关系数为0.999的标准曲线.随后,采用酸性高锰酸钾改性法研究了GK-2H型凹土对钴离子的吸附能力.结果表明,经改性后的凹土对钴离子的吸附能力明显优于改性前的凹土吸附能力,特别是在高锰酸钾溶液pH值为2.44、浓度为0.06 mol/L时的吸附效果最佳,高达20.9%.最后,利用XRD、SEM、TEM和IR等方法对其进行检测,发现:改性后的凹土不但结构分散性好,而且表面也更圆润、杂质少.

Firstly,the absorbance of Cobalt ion solution at different concentrations was detected in the study,and the standard curve with a correlation coefficient of 0.999 was obtained by the linear fitting.Subsequently,the Attapulgite of GK-2H type was modified by the acidic Potassium Permanganate under different conditions,and the adsorption ability of the above samples on Cobalt ions was investigated.The test results showed that the adsorption ability of the modified Attapulgite on Cobalt ions was significantly better than that of the original Attapulgite.When the pH value and the concentration of Potassium Permanganate solution were 2.44 and 0.06 mol/L,the adsorption rate was nearly up to 20.9%.Finally,the modified Attapulgite was detected by XRD,SEM,TEM,and IR.The results suggested that the modified Attapulgite by acidic Potassium Permanganate had good structure dispersion and a smoother surface with fewer impurities.