期刊
ADVANCES IN COLLOID AND INTERFACE SCIENCE
卷 152, 期 1-2, 页码 2-13出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cis.2009.07.009
关键词
Sorption; Modeling; Kinetics; Pseudo-first order; Pseudo-second order; Pollutants removal
A review of a certain class of theoretical models describing the kinetics of pollutants sorption onto various sorbents is presented. These assuming the rate of surface reaction as the rate-limiting step are considered. A special attention is paid to possible theoretical grounds of the most commonly applied mathematical expressions, such as the pseudo-second and the pseudo-first order equations. Simple theoretical considerations based on some fundamental theories suggest that these two formulae do not correspond to any specific physical model. They simply approximate well the behaviours predicted by many different theoretical approaches. (C) 2009 Elsevier B.V. All rights reserved.
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