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Biodegradation of polycyclic aromatic hydrocarbons (PAHs) by some bacteria isolated from coal tar contaminated soil

Safekordi, A ; Sharif University of Technology | 2001

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  1. Type of Document: Article
  2. Publisher: Sharif University of Technology , 2001
  3. Abstract:
  4. Microbiological analyses of soil chronically exposed to coal tar of an industrialized area in Iran resulted in isolation of some bacteria capable of degrading naphthalene, phenanthrene and anthracene in an aqueous solution. The initial PAH concentrations were at the water solubility level and degradation proceeded to a nondetectable level in some cases. The degradation rate decreased with an increase in the number of fused benzene rings. For PAHs with the same number of fused rings, however, fewer clustered molecules appeared to degrade faster. The kinetic parameters of hydrocarbon (substrates) degradation and microorganism growth rates were determined using the logestic mathematical model. The calculated data based on the proposed model were in good agreement with the experimental ones
  5. Keywords:
  7. Source: Scientia Iranica ; Volume 8, Issue 3 , 2001 , Pages 197-202 ; 10263098 (ISSN)
  8. URL: http://scientiairanica.sharif.edu/article_2749.html