摘要
本文从溶质、溶剂与吸附剂表面三者之间相互作用的角度,阐明了Freundlich方程(x=kc1/0)在固-液吸附中两个参数的物理意义,k是与吸附平衡常数成正比的特征参数,k值大小则表示吸附反应进行的程度;α与溶质和吸附剂表面脱落的溶剂分子数的比值有关,是表征吸附作用力性质的特征参数。由实验求得的k和α值初步探讨了Zn在石灰性土壤中的吸附机制和迁移规律,结果是令人满意的。
The Freundlich adsorpriom equation (x=KC^(1/α)) was developed based on the interaction between soluie (or adsorbate), solven' and adsorbent surface, x is the adsorption capacity, C the concentration of equilibrium sol ttion, and K the characteristic parameter, as a measurement of the capacity of adsorption, which is proportional to the equilibrium constant of Zn adsorption. α is related to the ratio of the s'olvent moleculae released from solute and adsorbent surface and could be considered as a measurement of the intensity of adsorption force. The velues of K and α calculated were used satisfactorily to explain the mechanism and movement of Zn added in calcareous soil.
出处
《土壤学报》
CAS
CSCD
北大核心
1991年第4期390-395,共6页
Acta Pedologica Sinica
