柳江河沉积物和沿岸土壤对磷的吸附及解吸动力学  

KINETICS OF PHOSPHOROUS ADSORPTION ON BANK SOILS AND DESORPTION FROM SEDIMENTS OF LIUJIANG RIVER

作　　者：田玉红[1] 刘正西[1] 

机构地区：[1]广西工学院生物与化学工程系,柳州545006

出　　处：《山东农业大学学报（自然科学版）》2004年第4期621-624,共4页Journal of Shandong Agricultural University：Natural Science Edition

摘　　要：本文研究了柳江河沿岸土壤和沉积物对磷的吸附及解吸动力学。在实验条件下 ,柳江河沿岸土壤对磷吸附速度较快 ,吸附规律符合交换平衡动力学方程 :t/Xd(t) =t/Xd(eq) +B。在相同实验条件下 ,柳江河沉积物则出现了释磷现象。Adsorption kinetics of phosphorous on coastwise soil and desorption from sediment of Liujiang River were investigated. When pH value is 7 and original concentration of phosphorous is 2.0mg/l, the adsorption kinetics of phosphorous on soil can be well described by exchange equilibrium kinetics models:t/X d(t)=t/X d(eq) +B. At the same time, phosphorus from sediment was released.

关 键 词：土壤 江河 磷吸附 解吸动力学 实验条件 平衡 现象 沉积物 吸附规律 动力学方程 

分 类 号：S153[农业科学—土壤学] X131[农业科学—农业基础科学]