Petroleum contaminated soil in Oman: Evaluation of bioremediation treatment and potential for reuse in hot asphalt mix concrete

Ahmad Jamrah, Ahmed Al-Futaisi, Hossam Hassan, Salem Al-Oraimi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper presents a study that aims at evaluating the leaching characteristics of petroleum contaminated soils as well as their application in hot mix asphalt concrete. Soil samples are environmentally characterized in terms of their total heavy metals and hydrocarbon compounds and leachability. The total petroleum hydrocarbon (TPH) present in the PCS before and after treatment was determined to be 6.8% and 5.3% by dry weight, indicating a reduction of 1% in the TPH of PCS due to the current treatment employed. Results of the total heavy metal analysis on soils indicate that the concentrations of heavy metals are lower when extraction of the soil samples is carried out using hexane in comparison to TCE. The results show that the clean soils present in the vicinity of contaminated sites contain heavy metals in the following decreasing order: nickel (Ni), followed by chromium (Cr), zinc (Zn), copper (Cu), lead (Pb), and vanadium (V). The current treatment practice employed for remediation of the contaminated soil reduces the concentrations of nickel and chromium, but increases the concentrations of all remaining heavy metals.

Original languageEnglish
Pages (from-to)331-341
Number of pages11
JournalEnvironmental Monitoring and Assessment
Volume124
Issue number1-3
DOIs
Publication statusPublished - Jan 2007

Keywords

  • Heavy metals
  • Hot asphalt mix
  • Hydrocarbons
  • Petroleum contaminated soil
  • Toxicity characteristic leaching procedure

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry

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