Soil washing, ozofractionation and metal sequestration: removing organic and inorganic species from contaminated soil and water

Fergusson, Lee (2015) Soil washing, ozofractionation and metal sequestration: removing organic and inorganic species from contaminated soil and water. International Journal of Multidisciplinary Research and Development, 2 (4). pp. 574-579. ISSN 2349-5979

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Abstract

Most research of soil washing conducted around the world has involved the removal of inorganic species from contaminated soil matrices. Few have considered its potential for removing organic species, although it has been used to remove volatile organic compounds and diesel. Similarly, a significant amount of research has considered the roles of advanced oxidation and ozonation in destroying organic species in water, but few have examined the potential of ozofractionation to perform this role.

The purpose of this study was to assess the capacity of soil washing to remove both organic and inorganic species from a complex contaminated industrial soil, and once contaminants had been liberated from the solid phase, examine whether ozofractionation destroyed organic and inorganic species and whether a chemical reagent sequestered inorganic species in the flushing solution.
Findings suggest that soil washing had a salutary effect on liberating organic and inorganic species from contaminated soil, reducing total petroleum hydrocarbons, for example, from 1,290 mg/kg to 320 mg/kg.

The study also found that ozofractionation destroyed organic and inorganic species, for example reducing
polycyclic aromatic hydrocarbons from 13.2 mg/L to <0.5 mg/L and cyanide from 5.9 mg/L to 0.02 mg/L, and reagents sequestered heavy metals in the flushing solution.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: No Faculty
Date Deposited: 20 Aug 2018 05:11
Last Modified: 03 Sep 2018 04:36
Uncontrolled Keywords: soil washing, surfactant, flushing solution, ozofractionation, sequestration
Fields of Research : 05 Environmental Sciences > 0503 Soil Sciences > 050399 Soil Sciences not elsewhere classified
Socio-Economic Objective: D Environment > 96 Environment > 9614 Soils > 961407 Urban and Industrial Soils
URI: http://eprints.usq.edu.au/id/eprint/34571

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