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Title: Cosolvent effects of oxygenated fuels on PAH solubility

Abstract

Cosolvents have been recognized to have a significant impact on the redistribution and movement of hydrophobic organic compounds (HOCs) in the environment. The cosolvent effect of oxygenated compounds (methanol, ethanol, and methyl tert-butyl ether) on the solubility of polynuclear aromatic hydrocarbons (PAHs) was examined by laboratory experiments. Coal-tar-contaminated sediment was used to study the redistribution and facilitated solubilization of 18 PAH compounds in both sediment and aqueous phases caused by cosolvent effects when oxygenated fuel spills occur. A batch dilution experiment was designed to represent the dilution effect of the cosolvent in a simulated river system. The results indicate that PAH solubility increased essentially in a long-linear manner with an increased volume fraction of methanol and ethanol. Deviations from a log-linear relationship were observed for methyl tert-butyl ether due to its limited aqueous solubility, and the cosolvent effect was seen only at the simulated fuel spill site. A linear relationship between the cosolvency power and logarithm of octanol/water partition coefficient was observed.

Authors:
;  [1]
  1. Univ. of Florida, Gainesville, FL (United States). Dept. of Environmental Engineering Science
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
477250
Resource Type:
Journal Article
Journal Name:
Journal of Environmental Engineering
Additional Journal Information:
Journal Volume: 123; Journal Issue: 4; Other Information: PBD: Apr 1997
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 02 PETROLEUM; POLYCYCLIC AROMATIC HYDROCARBONS; ENVIRONMENTAL TRANSPORT; ORGANIC SOLVENTS; HAZARDOUS MATERIALS SPILLS; SOLUBILITY; ENVIRONMENTAL EFFECTS; COAL TAR; BENCH-SCALE EXPERIMENTS

Citation Formats

Chen, C S, and Delfino, J J. Cosolvent effects of oxygenated fuels on PAH solubility. United States: N. p., 1997. Web. doi:10.1061/(ASCE)0733-9372(1997)123:4(354).
Chen, C S, & Delfino, J J. Cosolvent effects of oxygenated fuels on PAH solubility. United States. https://doi.org/10.1061/(ASCE)0733-9372(1997)123:4(354)
Chen, C S, and Delfino, J J. 1997. "Cosolvent effects of oxygenated fuels on PAH solubility". United States. https://doi.org/10.1061/(ASCE)0733-9372(1997)123:4(354).
@article{osti_477250,
title = {Cosolvent effects of oxygenated fuels on PAH solubility},
author = {Chen, C S and Delfino, J J},
abstractNote = {Cosolvents have been recognized to have a significant impact on the redistribution and movement of hydrophobic organic compounds (HOCs) in the environment. The cosolvent effect of oxygenated compounds (methanol, ethanol, and methyl tert-butyl ether) on the solubility of polynuclear aromatic hydrocarbons (PAHs) was examined by laboratory experiments. Coal-tar-contaminated sediment was used to study the redistribution and facilitated solubilization of 18 PAH compounds in both sediment and aqueous phases caused by cosolvent effects when oxygenated fuel spills occur. A batch dilution experiment was designed to represent the dilution effect of the cosolvent in a simulated river system. The results indicate that PAH solubility increased essentially in a long-linear manner with an increased volume fraction of methanol and ethanol. Deviations from a log-linear relationship were observed for methyl tert-butyl ether due to its limited aqueous solubility, and the cosolvent effect was seen only at the simulated fuel spill site. A linear relationship between the cosolvency power and logarithm of octanol/water partition coefficient was observed.},
doi = {10.1061/(ASCE)0733-9372(1997)123:4(354)},
url = {https://www.osti.gov/biblio/477250}, journal = {Journal of Environmental Engineering},
number = 4,
volume = 123,
place = {United States},
year = {Tue Apr 01 00:00:00 EST 1997},
month = {Tue Apr 01 00:00:00 EST 1997}
}