Remediation of metal ore mine waste using combined chemical- and phytostabilisation

Viktoria Feigl, Katalin Gruiz, Attila Anton

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The combination of chemical stabilisation (using fly ash, lime and steel shots) and phytostabilisation (using grass mixture and two Sorghum species) were applied to remediate a highly acidic metal ore mine waste in Gyöngyösoroszi, Hungary. The change in metal mobility was monitored by chemical, biological and ecotoxicological methods. Chemical stabilisation reduced the amount of Cd from 441 to 0.42 μg l-1, Cu from 1510 to 11.7 μg l-1 and Zn from 89079 to 48.8 μg l-1 in drainage water and extractable As from 0.404 to 0.086 mg kg-1 in waste within two years. The high toxicity of the mine waste was reduced to nontoxic and healthy vegetation developed on the previously barren surface with metal content fulfilling animal fodder quality criteria. The technology reduced the risk on all possible pathways fulfilling all target criteria. c Periodica Polytechnica 2010.

Original languageEnglish
Pages (from-to)71-80
Number of pages10
JournalPeriodica Polytechnica Chemical Engineering
Volume54
Issue number2
DOIs
Publication statusPublished - Jan 1 2010

Keywords

  • Chemical soil treatment
  • Chemical stabilisation
  • Fly ash
  • In situ
  • Phytostabilisation
  • Toxic metals

ASJC Scopus subject areas

  • Chemical Engineering(all)

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