Recycling of solvent used in a solvent extraction of petroleum hydrocarbons
contaminated soil.

Wu, Guozhong; Li, Xingang; Coulon, Frederic; Li, Hong; Lian, Jingyan; Sui, Hong

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dc.contributor.author	Wu, Guozhong	-
dc.contributor.author	Li, Xingang	-
dc.contributor.author	Coulon, Frederic	-
dc.contributor.author	Li, Hong	-
dc.contributor.author	Lian, Jingyan	-
dc.contributor.author	Sui, Hong	-
dc.date.accessioned	2011-11-29T23:02:04Z
dc.date.available	2011-11-29T23:02:04Z
dc.date.issued	2011-02-15T00:00:00Z	-
dc.identifier.citation	Guozhong Wu, Xingang Li, Frédéric Coulon, Hong Li, Jingyan Lian, Hong Sui, Recycling of solvent used in a solvent extraction of petroleum hydrocarbons contaminated soil, Journal of Hazardous Materials, Volume 186, Issue 1, 15 February 2011, Pages 533-539.
dc.identifier.issn	0304-3894	-
dc.identifier.uri	http://dx.doi.org/10.1016/j.jhazmat.2010.11.041	-
dc.identifier.uri	http://dspace.lib.cranfield.ac.uk/handle/1826/6763
dc.description.abstract	The application of water washing technology for recycling an organic composite solvent consisting of hexane and pentane (4:1; TU-A solvent) was investigated for extracting total petroleum hydrocarbons (TPH) from contaminated soil. The effects of water volume, water temperature, washing time and initial concentration of solvent were evaluated using orthogonal experiments followed by single factor experiments. Our results showed that the water volume was a statistically significant factor influencing greatly the water washing efficiency. Although less important, the other three factors have all increased the efficacy of water washing treatment. Based on a treatment of 20g of contaminated soil with a TPH concentration of 140mgg(-1), optimal conditions were found to be at 40°C, 100mL water, 5min washing time and 660mgg(-1) solvent. Semi-continuous water extraction method showed that the concentration of the composite solvent TU-A was reduced below 15mgg(-1) d.w. soil with a recovery extraction efficiency >97%. This finding suggests that water washing is a promising technology for recycling solvent used in TPH extraction from contaminated soils	en_UK
dc.publisher	Elsevier Science B.V., Amsterdam.	en_UK
dc.rights	NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Hazardous Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Hazardous Materials, VOL 186, ISSUE 1, (2011) DOI:10.1016/j.jhazmat.2010.11.041
dc.title	Recycling of solvent used in a solvent extraction of petroleum hydrocarbons contaminated soil.	en_UK
dc.type	Article	-