ANALYTICAL APPROXIMATION FOR NONLINEAR ADSORBING SOLUTE TRANSPORT AND 1ST-ORDER DEGRADATION

被引：15
|
作者：
BOSMA, WJP
VANDERZEE, SEATM
机构：
[1] Department of Soil Science and Plant Nutrition, Agricultural University, EC Wageningen, 6700
来源：
TRANSPORT IN POROUS MEDIA | 1993年 / 11卷 / 01期
关键词：
NONLINEAR ADSORPTION; TRAVELING WAVE; 1ST-ORDER DEGRADATION; PESTICIDE TRANSPORT;
D O I：
10.1007/BF00614633
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Under some constraints, solutes undergoing nonlinear adsorption migrate according to a traveling wave. Analytical traveling wave solutions were used to obtain an approximation for the solute front shape, c(z, t), for the situation of equilibrium nonlinear adsorption and first-order degradation. This approximation describes numerically obtained fronts and breakthrough curves well. It is shown to describe fronts more accurately than a solution based on linearized adsorption. The latter solution accounts neither for the relatively steep downstream solute front nor for the deceleration in time of the nonlinear front.
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页码：33 / 43
页数：11
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