Phytoremediation of polycyclic hydrocarbon contaminated soil: Part II. Impact on ecotoxicity

Naressa Cofield, A. Paul Schwab, Phillip Williams, M. Katherine Banks

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Several biological assays were used to evaluate the toxic effects of contaminants in soil after phytoremediation. During the treatment process, significant decreases in overall toxicity were observed. Specifically, earthworm survivability and lettuce germination increased over the study period. Microbial respiration improved, but only in planted treatments. Toxicity and total polycyclic aromatic hydrocarbon concentrations showed some correlation, but the relationships generally were not significant. Soil moisture was less of a predictor for biological responses. The presence of plants did not provide a clear advantage for improving toxicity compared to unplanted treatments.

Original languageEnglish (US)
Pages (from-to)371-384
Number of pages14
JournalInternational Journal of Phytoremediation
Volume9
Issue number5
DOIs
StatePublished - Sep 2007

Keywords

  • Contamination
  • Earthworms
  • Microorganisms
  • Phytoremediation
  • Plants
  • Polycyclic aromatic hydrocarbons (PAHs)
  • Soil
  • Toxicity

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Plant Science

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