Naphthalene biosorption in soil/water systems of low or high sorptive capacity |
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| Authors: | B E Whitman J R Mihelcic D R Lueking |
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| Institution: | (1) Department of Civil and Environmental Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, USA. Fax: 906-487-3292, US;(2) Department of Biological Sciences, Michigan Technological University, Houghton, MI 49931, USA, US |
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| Abstract: | A model system was developed for evaluating naphthalene biosorption based on the use of a mutant (strain TG-5 Nah-) derived from a naphthalene-degrading Pseudomonas fluorescens isolate. Cells of strain TG-5 had a sorptive capacity for naphthalene (partition coefficient of 380 cm3/g) significantly higher than a soil with a 5.1% organic carbon content (partition coefficient of 41 cm3/g). However, experimental results and a mass balance model demonstrated that, in soil systems of high organic carbon content,
the mass of naphthalene associated with biological solids is insignificant. In contrast, in a soil system of nonsorptive Ottawa
sand, up to 10% of the initial naphthalene was demonstrated experimentally, and by modeling, to be associated with cells of
strain TG-5.
Received: 6 June 1994/Received revision: 12 September 1994/Accepted: 28 September 1994 |
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