Sediment-air equilibrium partitioning of semi-volatile hydrophobic organic compounds. Part 1. Method development and water vapor sorption isotherm

G. De Seze, K. T. Valsaraj, D. D. Reible, L. J. Thibodeaux

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Contaminated sediments that become exposed to air as a result of dredging and disposal in confined disposal facilities are potential sources of air pollution. A critical parameter to develop emission estimation models is the equilibrium partition coefficient of contaminants, between sediment and air. In this first of two articles, we present a method, based on gas saturation in a flowing stream, to study both the adsorption of water and semi-volatile organic compounds on a sediment from the Campus Lake, Baton Rouge, LA, USA. The experimental set-up was used to determine the adsorption isotherm for water partitioning between sediment and pore-air. A detailed characterization of the sediment surface area and pore volume was used to develop an adsorption-condensation model for predicting water sorption on sediment. The model was used to estimate the importance of water adsorption on mineral surfaces and condensation in pores. This information serves, in the accompanying second article in the series, as the basis for the modeling of the partitioning of phenanthrene, and dibenzofuran. Copyright (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)15-26
Number of pages12
JournalScience of the Total Environment
Volume253
Issue number1-3
DOIs
StatePublished - May 15 2000

Keywords

  • Sediment-air partitioning
  • Water vapor sorption

Fingerprint Dive into the research topics of 'Sediment-air equilibrium partitioning of semi-volatile hydrophobic organic compounds. Part 1. Method development and water vapor sorption isotherm'. Together they form a unique fingerprint.

  • Cite this