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A mathematical model for the sequestering of chemical contaminants by magnetic particles

Bigger, Stephen W and Ngeh, Lawrence and Orbell, John (2010) A mathematical model for the sequestering of chemical contaminants by magnetic particles. Journal of Environmental Engineering, 136 (11). pp. 1255-1259. ISSN 0733-9372

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Abstract

A mathematical model is developed and implemented to characterize the pickup of various liquid chemical contaminants by polyethylene-coated magnetic particles. The model and its associated experimental and analytical protocols were applied to a wide range of liquid chemicals in order to gain insights into the physical basis for the pickup phenomenon. The characteristics of the pickup isotherms range between “ideal” and “nonideal” behaviors that are reflected in the mathematical model by a single parameter, �0, where �0=1 corresponds to ideal behavior and �0�1 corresponds to a departure from idealized behavior that is directly quantified by the magnitude of �0. The parameter �0 is also related to the efficiency of pickup, and since most isotherms observed in the study deviate from ideality, the high efficiency of pickup observed in these systems has been attributed in part to this deviation. The proposed model and its associated experimental and analytical protocols demonstrate great potential for the systematic evaluation of the uptake of chemical contaminants using magnetic particle technology.

Item Type: Article
Uncontrolled Keywords: ResPubID19770, iron compounds, pollutants, oils, mathematical models, iron powder, chemical contaminants, magnetic particles
Subjects: FOR Classification > 0904 Chemical Engineering
FOR Classification > 0907 Environmental Engineering
SEO Classification > 970105 Expanding Knowledge in the Environmental Sciences
Faculty/School/Research Centre/Department > Institute for Sustainability and Innovation (ISI)
Faculty/School/Research Centre/Department > School of Engineering and Science
Depositing User: VUIR
Date Deposited: 14 Nov 2011 06:01
Last Modified: 08 Oct 2013 01:47
URI: http://vuir.vu.edu.au/id/eprint/7349
DOI: 10.1061/(ASCE)EE.1943-7870.0000276
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