Title: Waste management of a microemulsion using elevated temperatures

Authors: Clayton J. Clark II

Addresses: Civil and Coastal Engineering Department, University of Florida, 580B Weil Hall, Gainesville, FL 32611, USA

Abstract: Elevated temperatures reduced NAPL-saturated fraction of a treated SPME waste effluent. As temperature increased, aqueous fraction of the separated SPME increased to 0.96 at 90°C. Composite volume samples had optimal separation at 75°C, where >95% of NAPL mass partitioned into the organic phase; while in first pore volume samples, it decreased with increasing temperature after 70°C. Increasing temperature of composite volume samples increased surfactant partitioning into the organic phase; in first pore volume samples, it was evenly divided into both phases. Increased temperatures reduced COD of aqueous phases >75%. Overall, elevated temperatures reduced volume of NAPL-saturated solution by 96%.

Keywords: single-phase microemulsion; waste management; elevated temperatures; phase separation; NAPL; volume reduction; surfactant partitioning; non-aqueous phase liquid.

DOI: 10.1504/IJEP.2005.006393

International Journal of Environment and Pollution, 2005 Vol.23 No.1, pp.16 - 28

Published online: 03 Mar 2005 *

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