中文摘要：

为探讨湿地土壤处理含磷污染物的机制，以鄱阳湖湿地土壤作为吸附剂，测定其基本理化性质，研究了其对磷的吸附特性。研究结果表明：Langmuir方程和Freundlich方程均可以较好地描述土样对磷的等温吸附过程，相关系数均在0．9以上；相比而言，Langmuir方程的拟合效果更好，通过Langmuir方程得出土样对磷的最大吸附量为588．2353mg／kg，吸附平衡常数为0．4596L／mg；不同pH下，土样对磷的吸附量与有机质含量呈正相关关系；土样对磷的吸附为吸热反应。

英文摘要：

The wetland soil of Poyang Lake was used as adsorbent for removal of phosphorus from aquatic solu tion. The basic physical and chemical properties of the wetland soil were detected, and the phosphorus adsorption characteristic and mechanism of wetland soil was investigated. The experimental results showed that both Langmuir equation and Freundlich equation could well describe the isothermal adsorption of phosphorus on wetland soil, the cor relation coefficient was more than 0.9. Langmuir equation fitted the experiment flata better than Freundlich equation. Base on the Langmuir fitting equation,the maximum phosphorus adsorption capacity and adsorption equilibrium con stant of wetland soil was calculated,they were 588. 235 3 mg/kg and 0. 459 6 L/mg respectively. The correlation of the phosphorus adsorption capacity and organic matter content of the 5 section soil sample was investigate under different pH condition,results showed that they were positive correlated with each other. The enthalpy and free energy of adsorption process at different temperature was detected, and the phosphorus adsorption process was proved to be an endothermic reaction.