Biological solubilisation of metals from solid waste materials from copper, steel and recycling industries

Elina Vestola, M.K. Kuusenaho, H.M. Närhi, O.H. Tuovinen, J.A. Puhakka, J.J. Plumb, A.H. Kaksonen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The aim of the present work was to study the feasibility of using bioleaching for the solubilisation of metals from solid waste streams and by-products of copper, steel and recycling industries. Optimal process conditions were tested using iron and sulphur oxidising acidophiles in shake flasks at 25°C. The effects of inoculum, ferrous iron, sulphur, chloride ion, pH, and the type of waste material on metal solubilisation were evaluated. Solubilisation of metals was mainly achieved through acid attack due to the formation of sulphuric acid by sulphur oxidising bacteria. Addition of ferrous iron and chloride ion did not enhance solubilisation.
Original languageEnglish
Pages (from-to)673-676
JournalAdvanced Materials Research
Volume71-73
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

Keywords

  • converter sludge
  • copper solubilisation
  • electronic scrap
  • metallic waste materials
  • smelter slag
  • solid waste management
  • solid wastes

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    Vestola, E., Kuusenaho, M. K., Närhi, H. M., Tuovinen, O. H., Puhakka, J. A., Plumb, J. J., & Kaksonen, A. H. (2009). Biological solubilisation of metals from solid waste materials from copper, steel and recycling industries. Advanced Materials Research, 71-73, 673-676. https://doi.org/10.4028/www.scientific.net/AMR.71-73.673