腐殖酸磷肥中的腐殖酸对磷迁移的影响及机理

景建元,袁亮,张水勤,李燕婷,赵秉强

Effects and Mechanism of Humic Acid in Humic Acid Enhanced Phosphate Fertilizer on Fertilizer-Phosphorus Migration

JING JianYuan,YUAN Liang,ZHANG ShuiQin,LI YanTing,ZHAO BingQiang

表4 HA与PHA吸附磷酸盐的动力学拟合参数

Table 4 Adsorption kinetics fitting parameters of HA and PHA on phosphate

准一级动力学方程 Pseudo first order kinetic equation 准二级动力学方程 Pseudo second order kinetic equation qe,cal (mg·g-1) k1 (h-1) R2 qe,cal (mg·g-1) k2(h-1) R2 HA 3.83 9.49 0.93 3.99 4.45 0.94 PHA 1.88 5.71 0.95 1.98 4.63 0.87