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Phytoremediation of heavy metal and PAH-contaminated brownfield sites. S é bastien Roy, et al. 2004 Plant and Soil 272: 277-290. Background Information. Use of plants to clean up pollutants in environment Set of technologies that use different plants for techniques

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phytoremediation of heavy metal and pah contaminated brownfield sites

Phytoremediation of heavy metal and PAH-contaminated brownfield sites

Sébastien Roy, et al. 2004

Plant and Soil

272: 277-290

background information
Background Information
  • Use of plants to clean up pollutants in environment
  • Set of technologies that use different plants for techniques
    • Containment, destruction, extraction, transpiration
goals of this paper
Goals of this paper
  • Assess heavy metal phytoextraction performance from alkaline soils
  • Assess the impact of phytoextraction plants on rhizosphere communities
materials and methods
Materials and Methods
  • Soil excavation
    • Alkaline soils contaminated with metals and PAHs
  • Indian mustard, willow, and fescue
    • Chosen because they can extract heavy-metals and grow on the tested soils
  • Pot Trials
    • Chelating agent EDTA
materials and methods7
Materials and Methods
  • Heavy metal analysis
    • Roots and aerial
  • Microbial enumerations
    • Plate count
  • Community DNA extraction and DGGE
    • 13 samples, characterized diversity
results
Results

Indian mustard

Willow

Fescue

Figure 1

Figure 2

discussion
Discussion
  • Heavy metal accumulations
  • Preferred Harvests
  • Plant mixtures
  • Rhizosphere populations
  • PAH degradation
  • Usefulness of study for projections
conclusion
Conclusion
  • Phytoremediation
    • can offer a feasible alternative for restoration
    • can take a long time with many harvests
    • is an important tool for controlling contaminant migration
sources
Sources
  • Becker, Hank. “Phytoremediation: Using Plants to Clean Up

Soils”. Agricultural Research Magazine. June 2000 Vol. 48, No. 6. http://www.ars.usda.gov/is/AR/archive/jun00/soil0600.htm

  • National Risk Management Research Laboratory, USEPA. “Introduction to Phytoremediation”.

http://clu-in.org/download/remed/introphyto.pdf

  • Roy, Sebastien, et al. “Phytoremediation of heavy metal and PAH-contaminated brownfield sites”. Plant and Soil (2005) 272: 277-290.
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