复合树脂吸附剂对磷酸盐的吸附性能研究

Study on Adsorption Properties of Phosphate by Composite Resin Adsorbent

通过静态吸附实验考察两种复合树脂HFO-N和HFO-B对磷酸盐的吸附性能,研究反应温度与反应时间对磷酸盐吸附去除率的影响,探讨其吸附动力学曲线。结果表明,两种复合树脂对磷酸盐均表现出较好的吸附去除能力。随着反应时间的延长,HFO-N与HFO-B复合树脂对于磷酸盐的吸附去除率均逐渐提高。两种复合树脂对于磷酸盐的吸附去除率均随着反应温度的升高而增加。在同等实验条件下,HFO-N复合树脂吸附剂对磷酸盐的吸附性能明显优于HFO-B复合树脂。准一级动力学方程和准二级动力学方程均能较好的拟合HFO-N型树脂对磷酸盐的吸附行为,而HFO-B型树脂对磷酸盐的吸附行为更符合准二级反应方程。

The adsorption properties of two kinds of composite resins HFO- N and HFO- B on phosphate were investigated by static adsorption experiments. The effects of reaction temperature and reaction time on the removal rate of phosphate were studied, and the adsorption kinetics curves were also discussed. The results showed that the two composite resins exhibited good adsorption and removal ability to phosphate. With the extension of reaction time, the adsorption removal rate of HFO-N and HFO-B composite resin for phosphate was increased gradually. The removal efficiency of phosphate adsorption by two kinds of composite resins increased with the increase of the reaction temperature. Under the same experimental conditions, HFO-N composite resin adsorbent had better adsorption performance on phosphate than that of HFO-B composite resin. Both the quasi-first-order kinetics equation and the quasi- second-order kinetics equation could well fit the adsorption behavior of HFO-N resin on phosphate. The adsorption behavior of HFO-B resin on phosphate was more consistent with quasi-second-order reaction equation.