Desorption kinetics studies on PAH-contaminated soil under varying temperatures
作者： Anja Enell , Fredrik Reichenberg , Göran Ewald , Per Warfvinge
DOI: 10.1016/J.CHEMOSPHERE.2005.04.092
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摘要: The purpose of this study was to investigate the effect temperature on release polycyclic aromatic hydrocarbons (PAHs) from aged contaminated soil. fluorene, phenanthrene, anthracene, fluoranthene and pyrene at 7, 15, 18 23 °C studied using a column leaching method with hydraulic retention time 0.5 h. As declined 7 concentrations decreased by factor 11–12 for all compounds except which only 7. Rate constants maximum rate four temperatures were assessed. From dependence studies, apparent activation energies desorption, , calculated. -values appeared be in range 105–137 kJ mol−1 PAHs increased LeBas molar volume compounds. increase molecular size indicates stronger sorption hydrophobicity
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