Remediation of soils contaminated with polycyclic aromatic hydrocarbons (PAHs)

S. Gan, E. V. Lau, Hoon Kiat Ng

Research output: Contribution to journalReview ArticleResearchpeer-review

569 Citations (Scopus)

Abstract

Polycyclic aromatic hydrocarbons (PAHs) are carcinogenic micropollutants which are resistant to environmental degradation due to their highly hydrophobic nature. Concerns over their adverse health effects have resulted in extensive studies on the remediation of soils contaminated with PAHs. This paper aims to provide a review of the remediation technologies specifically for PAH-contaminated soils. The technologies discussed here include solvent extraction, bioremediation, phytoremediation, chemical oxidation, photocatalytic degradation, electrokinetic remediation, thermal treatment and integrated remediation technologies. For each of these, the theories are discussed in conjunction with comparative evaluation of studies reported in the specialised literature.

Original languageEnglish
Pages (from-to)532-549
Number of pages18
JournalJournal of Hazardous Materials
Volume172
Issue number2-3
DOIs
Publication statusPublished - 30 Dec 2009
Externally publishedYes

Keywords

  • Contaminated soil
  • Polycyclic aromatic hydrocarbons (PAHs)
  • Soil remediation

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