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Experimental Design Approach for the Optimization of Supercritical Fluid Extraction of Pyralene and Aldrin in Soil Matrix by R Zaragoza; L Barna; J.M Blanchard is a Environmental Science article available to read on EtoBox.

What is Experimental Design Approach for the Optimization of Supercritical Fluid Extraction of Pyralene and Aldrin in Soil Matrix about?

Characterisation and remediation of contaminated soils are crucial issues in environmental control. Extraction of pollutants with supercritical ̄uids is a competitive and viable technique on a laboratory scale and is of great interest for the treatment of contaminated soils in the future. Extraction by supercritical ̄uids (CO 2 or modi®ed CO 2 ) has been carried out on a standard soil (EUROSOIL 1), arti®cially polluted by organochloride compounds, i.e. pyralene and aldrin. A commercialised extraction apparatus has been used in order to determine the optimal operating conditions for quantitative extraction. A systematic extraction study has been developed and interpreted according to the optimal design method. Several parameters in ̄uencing extraction have been identi®ed and studied: pressure, temperature, extraction ̄ow-rate, type of extracting ̄uid, water content of soil. The percentage recovery has been determined for each experiment. Linear regression of the resulting data has allowed the construction of a recovery response surface, which indicates that high recovery can be obtained over a wide range of extraction conditions.

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Author

R Zaragoza; L Barna; J.M Blanchard

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0956-053X)

Published

1998

Language

EN

Field

Environmental Science (Physical Sciences)