Optimisation of acid bioleaching of metals from pyritic ashes

E.A. Vestola (Corresponding Author), Jarno Mäkinen, T. Korhonen, Raisa Neitola, A.H. Kaksonen

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

Solid waste from sulphuric acid production contains high concentrations of metals that are harmful if released to the environment. The purpose of this study was to evaluate the acid bioleaching of metals from a sample of pyritic ashes, consisting mainly of hematite. Bioleaching was tested in shake flasks and continuously stirred tank reactors (CSTR) inoculated with iron and sulphur oxidising acidophiles. Solubilisation of metals was mainly achieved through acid attack due to the formation of sulphuric acid by sulphur oxidising bacteria.
Original languageEnglish
Pages (from-to)520-523
JournalAdvanced Materials Research
Volume825
DOIs
Publication statusPublished - 2013
MoE publication typeNot Eligible
Event20th International Biohydrometallurgy Symposium, IBS 2013 - Antofagasta, Chile
Duration: 8 Oct 201311 Oct 2013
Conference number: 20

Fingerprint

Ashes
Bioleaching
Acids
Metals
Sulfur
Hematite
Solid wastes
Bacteria
Iron

Keywords

  • bioleaching
  • pyritic ash
  • sulphur oxidation
  • waste

Cite this

Vestola, E.A. ; Mäkinen, Jarno ; Korhonen, T. ; Neitola, Raisa ; Kaksonen, A.H. / Optimisation of acid bioleaching of metals from pyritic ashes. In: Advanced Materials Research. 2013 ; Vol. 825. pp. 520-523.
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Optimisation of acid bioleaching of metals from pyritic ashes. / Vestola, E.A. (Corresponding Author); Mäkinen, Jarno; Korhonen, T.; Neitola, Raisa; Kaksonen, A.H.

In: Advanced Materials Research, Vol. 825, 2013, p. 520-523.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Optimisation of acid bioleaching of metals from pyritic ashes

AU - Vestola, E.A.

AU - Mäkinen, Jarno

AU - Korhonen, T.

AU - Neitola, Raisa

AU - Kaksonen, A.H.

PY - 2013

Y1 - 2013

N2 - Solid waste from sulphuric acid production contains high concentrations of metals that are harmful if released to the environment. The purpose of this study was to evaluate the acid bioleaching of metals from a sample of pyritic ashes, consisting mainly of hematite. Bioleaching was tested in shake flasks and continuously stirred tank reactors (CSTR) inoculated with iron and sulphur oxidising acidophiles. Solubilisation of metals was mainly achieved through acid attack due to the formation of sulphuric acid by sulphur oxidising bacteria.

AB - Solid waste from sulphuric acid production contains high concentrations of metals that are harmful if released to the environment. The purpose of this study was to evaluate the acid bioleaching of metals from a sample of pyritic ashes, consisting mainly of hematite. Bioleaching was tested in shake flasks and continuously stirred tank reactors (CSTR) inoculated with iron and sulphur oxidising acidophiles. Solubilisation of metals was mainly achieved through acid attack due to the formation of sulphuric acid by sulphur oxidising bacteria.

KW - bioleaching

KW - pyritic ash

KW - sulphur oxidation

KW - waste

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DO - 10.4028/www.scientific.net/AMR.825.520

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SP - 520

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JF - Advanced Materials Research

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