Influence of Surfactants on Spreading of Contaminants and Soil Remediation

P. Knabner (), S. Bitterlich, R. Iza Teran, A. Prechtel and E. Schneid
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P. Knabner: University of Erlangen-Nuremberg, Institute for Applied Mathematics
S. Bitterlich: University of Erlangen-Nuremberg, Institute for Applied Mathematics
R. Iza Teran: University of Erlangen-Nuremberg, Institute for Applied Mathematics
A. Prechtel: University of Erlangen-Nuremberg, Institute for Applied Mathematics
E. Schneid: University of Erlangen-Nuremberg, Institute for Applied Mathematics

A chapter in Mathematics — Key Technology for the Future, 2003, pp 152-161 from Springer

Abstract: Abstract Surfactants occur already in undisturbed biological processes in soils but within the development of remediation techniques these substances are of large interest because of their interaction with hydrophobic substances. The standard models for (un-)saturated water flow and solute transport are extended to include the influence of the surfactant transport on the flow of the water phase. Two effects of surfactants on (un-)saturated water flow are included: the modification of the interfacial tension between water and air and the swelling of clay minerals due to sorption of surfactants. Simulations are presented, which exhibit the feedback of surfactant transport on water flow and content. An identification algorithm for hydraulic soil properties has been developed that supplements the simulation tool.

Keywords: Hydraulic Conductivity; Pressure Head; Surface Active Agent; Multigrid Method; Water Retention Curve (search for similar items in EconPapers)
Date: 2003
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DOI: 10.1007/978-3-642-55753-8_12

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