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对201×7型强碱性阴离子树脂吸附草酸的性能进行了研究。研究结果表明:树脂对草酸的吸附在室温时溶液p H=1.5,草酸浓度0.02mol·L-1,树脂用量2.0 g,吸附时间10 min条件下较优;静态等温吸附平衡方程符合Langmuir等温吸附式,理论最大静态饱和吸附容量为6.902 mg·g-1树脂;静态吸附动力学符合准二级动力学模型,吸附过程主要受化学吸附控制。
The performance of 201 × 7 strongly basic anion resin adsorbing oxalic acid was studied. The results showed that the adsorption of oxalic acid on resin was better at pH = 1.5, the concentration of oxalic acid was 0.02mol·L-1, the amount of resin was 2.0g, and the adsorption time was 10 min. The static isotherm equilibrium equation was in accordance with Langmuir isothermal adsorption The theoretical maximum static adsorption capacity was 6.902 mg · g-1 resin. The static adsorption kinetics was in accordance with the quasi-second-order kinetic model. The adsorption process was mainly controlled by chemisorption.