NKY树脂吸附水溶性染料的研究

Study on Adsorption of Watersoluble Dyes onto NKY Resin

研究了新型树脂NKY对7种水溶性染料的静态吸附特性。结果表明,该树脂对水溶性染料的吸附具有特效性。通过三常数方程非线性回归实验数据可求出吸附过程的 A G’,说明 NKY对染料的第一层吸附为物理和化学作用并存的过程,多层吸附为典型的物理吸附。由分配比和温度关系曲线可求得j什,推导出的标准自由摘为正值,说明吸附是自发进行的。

Performance of static adsorption of seven kinds of dyes onto resin NKY has been studied in details. The results showed that NKY exhibited superior adsorption for the dyes. G0 could be calculated from the constants obtained through nonlinear regression of three-parameter equation and △H0 could be calculated from the relationship curve of distribution ratio and temperature. The obtained △S0 was positive, indicating that adsorption could take place automatically. Moreover, the dye structure has effect on the enthalpy of the adsorption.