Bioremediation of a Petroleum-Contaminated Cryic Soil: Effects of Phosphorus, Nitrogen, and Temperature

J. L. Walworth

Research output: Contribution to journalArticlepeer-review

68 Scopus citations


Bioremediation has been shown to be an effective means of treating petroleum-contaminated soils in cold areas, although the conditions required to maximize bioremediation in cold region (cryic) soils are not well documented. A laboratory study was conducted to investigate the effects of nitrogen and phosphorus levels and temperature on petroleum bioremediation. A cryic entisol contaminated with diesel fuel was treated with nitrogen (0,400, 800, or 1200 mg/kg of soil) and phosphorus (0, 60,120, or 180 mg/kg of soil) and incubated at two temperatures (10 and 20°C). At 10°C, bioremediation rates were not affected by fertility treatments. At 20°C, reaction rates were increased by the addition of P, but unaffected by N. Regardless of fertility regime, the rate of diesel loss was much greater in soil incubated at 20°C than in soil incubated at 10°C.

Original languageEnglish (US)
Pages (from-to)299-310
Number of pages12
JournalJournal of Soil Contamination
Issue number3
StatePublished - Jul 1995


  • biodegradation
  • environmental factors
  • hydrocarbons
  • nutrients

ASJC Scopus subject areas

  • Environmental Chemistry
  • Soil Science
  • Pollution
  • General Earth and Planetary Sciences
  • Health, Toxicology and Mutagenesis


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