Removal of Prussian blue from contaminated soil in the rhizosphere of cyanogenic plants

Dong Hee Kang, Lee Yen Hong, A. Paul Schwab, M. Katherine Banks

Research output: Contribution to journalArticle

15 Scopus citations


The fate of radiolabeled cyanide in soil was investigated during exposure to cyanogenic plant species, sorghum (Sorghum bicolor var. P721) and flax (Linum usitassimum var. Omega-Gold), in fully-contained growth chambers. Labeled cyanide was subject to microbial transformation, assimilation by plant roots, incorporation and biodegradation in plant tissue. For this study, 14C-labeled cyanide was added to soil, and distribution of 14C activity was assessed before plant establishment and after harvest. After 3 months of plant growth, 7% of the 14C-labeled cyanide was converted to 14CO2 with sorghum and 6% with flax, compared with only 2% conversion in unplanted soil. A small amount of unaltered cyanide was shown to be accumulated by the plants (≈140 mg cyanide/kg plant or <0.1% of the total). Results from this experiment demonstrate the potential of cyanogenic plants for use in phytoremediation of cyanide-contaminated soil.

Original languageEnglish (US)
Pages (from-to)1492-1498
Number of pages7
Issue number9
StatePublished - Nov 2007


  • Contamination
  • Cyanide
  • Groundwater
  • Phytoremediation
  • Prussian blue
  • Soil

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

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