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Environ Technol

Title:		Leaching of VOCs from cement-based stabilized/solidified refinery oily sludge using solid phase microextraction
Author(s):		Karamalidis AK; Voudrias EA;
Address:		"Department of Environmental Engineering, Democritus University of Thrace, GR 671 00 Xanthi, Greece"
Journal Title:		Environ Technol
Year:		2007
Volume:		28
Issue:		10
Page Number:		1173 - 1185
DOI:		10.1080/09593332808618879
ISSN/ISBN:		0959-3330 (Print) 0959-3330 (Linking)
Abstract:		"Cement-based Stabilization/Solidification was applied to refinery oily sludge. Zero Headspace Extraction was employed for the investigation of the leaching behavior of volatile organic compounds from untreated and stabilized/solidified oily sludge in water. A method is described combining zero headspace extraction, solid phase microextraction and gas chromatography with flame ionization detector for determination of volatile organic compounds in aqueous leachates. For stabilization/solidification of the waste, two types of cement were used, I42.5 and II42.5. The I42.5 is a Portland Cement whereas the II42.5 is a Blended Cement, which contains pozzolanic material. In general, the I42.5 cement showed better immobilizing characteristics than the II42.5 cement, but the difference was small. The leaching behavior of toluene, o-xylene, p,m-xylene and ethylbenzene from stabilized/solidified samples was similar for both types of cement. The reduction in the maximum leached amount of stabilized/solidified specimens compared with that of the untreated oily sludge alone, varied from 80% to 98%, for specimens with 10% cement addition (both types). Increased leaching was observed with increasing cement addition. In the case of naphthalene, stabilized/solidified samples leached more than threefold the amount leached from the untreated oily sludge alone"
Keywords:		*Chemical Industry *Construction Materials Organic Chemicals/*isolation & purification *Petroleum Sewage/*chemistry Volatilization;
Notes:		"MedlineKaramalidis, A K Voudrias, E A eng England 2007/11/01 Environ Technol. 2007 Oct; 28(10):1173-85. doi: 10.1080/09593332808618879"