Regularized least-squares methods for the calculation of discrete and continuous affinity distributions for heterogeneous sorbents
Article Abstract:
The discrete and continuous affinity distribution functions of environmental sorbents were calculated from experimental isotherms using regularized least squares methods. The least squares methods attempt to solve the difficulty of calculating affinity distributions for cases when chemicals are adsorbed from the aqueous phase to heterogeneous environmental sorbents. The resulting affinity distribution patterns are stable and are thus useful for comparisons of the sorption properties of minerals, soils, humic substances, sediments, rock and other environmental substances.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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Determination of nonlinear adsorption isotherms from column experiments: an alternative to batch studies
Article Abstract:
The use of measured breakthrough curves of sorbing chemicals in local equilibrium for determining nonlinear adsorption isotherms was studied. The technique's main advantage lies in the ease by which automated and accurate measurements of adsorption isotherms can be made. In addition, one column works at a high solid solution ratio close to the one encountered in the natural system of interest. These advantages avoid difficulties and limitations inherent in conventional batch studies.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1993
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Measurement of sorption isotherms with flow-through reactors
Article Abstract:
An alternative flow-through reactor technique for measuring sorption isotherms on solid environmental materials is developed. The method is based on chemical engineering and analytical chemistry and integrates the approaches of batch and column experiments. The flow-through method allows easy intensive prewashing, is less complicated than batch experiment instrumentation and maintains solid material stability throughout the experiment.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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