Biodegradation

, Volume 11, Issue 1, pp 1–9

Combined ozonation and biodegradation for remediationof mixtures of polycyclic aromatic hydrocarbons in soil

  • Kyoungphile Nam
  • Jerome J. Kukor
Article

DOI: 10.1023/A:1026592324693

Cite this article as:
Nam, K. & Kukor, J.J. Biodegradation (2000) 11: 1. doi:10.1023/A:1026592324693

Abstract

A study was conducted to investigate the feasibilityof a combined treatment (i.e., ozonation andbiodegradation) to overcome the inherent bacterialbioavailability limitation, and hence bioremediationlimitation, of polycyclic aromatic hydrocarbons insoil. Ozonation was very efficient in the removal ofnaphthalene, fluorene, phenanthrene, and anthracene,but not for pyrene, chrysene, and benzo(a)pyrene fromsoil freshly spiked with the hydrocarbons. A similarresult was obtained from coal tar-contaminated soil.Elimination of polycyclic aromatic hydrocarbonsincreased appreciably in sand containing 0.03%organic carbon, indicating the adverse effect oforganic carbon on the efficiency of ozone treatment.In spiked and coal tar-contaminated soils, ozonationfollowed by biodegradation significantly increased thedegradation of various polycyclic aromatichydrocarbons including chrysene and benzo(a)pyrenewhich were not degraded by the test bacterialconsortium alone. In particular, the effect of thecombined treatment was more pronounced in coaltar-contaminated soil than in sterile soil spiked withhydrocarbons, probably due to the augmented biologicalactivity of the introduced consortium. The resultssuggest that a combined treatment including ozonationand biodegradation may be a promising bioremediationtechnology in soil contaminated with mixtures ofpolycyclic aromatic hydrocarbons such as formermanufactured gas plant sites.

Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • Kyoungphile Nam
    • 1
  • Jerome J. Kukor
    • 3
  1. 1.Biotechnology Center for Agriculture and the Environment, Cook College CampusRutgers UniversityNew BrunswickUSA
  2. 2.School ofCivil, Urban, and Geosystem EngineeringSeoul National UniversitySeoulKorea
  3. 3.Biotechnology Center for Agriculture and the Environment, Cook College CampusRutgers UniversityNew BrunswickUSA

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