粉煤灰吸附城市生活污水中磷的动力学研究

Kinetics Study on Flyash's Adsorption of Phosphorus in Municipal Sewage

从动力学角度研究了粉煤灰吸附城市生活污水中磷的反应级数、指前因子和反应活化能.结果表明:粉煤灰对磷的吸附反应的反应级数为-0.0808,指前因子A为8.87×10-12(mol.L-1)1.0808min-1,表观活化能Ea为-25.45kJ.mol-1.

From the perspective of adsorption kinetics, factors concerning the reaction order, preexponential factor and the activation energy of flyash＇s adsorption of phosphorus in municipal sewage were all put under examination. The results showed that the reaction order was --0. 0808, the apparent activation energy --25.45kJ/mol and preexponential factor 8. 87 10^-12 （mol L-1 ）^1.0808 min-1.