Evaluation of Long-Term Post Process Inactivation of Bioleaching Microorganisms

Malin Bomberg (Corresponding author), Hanna Miettinen, Margareta Wahlström, Tommi Kaartinen, Sarita Ahoranta, Aino Maija Lakaniemi, Päivi Kinnunen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Abstract

The H2020 BioMOre project (www.biomore.info, Grant Agreement #642456) tests the feasibility of in-situ bioleaching of copper in deep subsurface deposits in the Rudna Mine, Poland. Copper is leached using biologically produced ferric iron solution, which is recycled back to the in-situ reactor after re-oxidation by iron-oxidizing bacteria (IOB). From a post operational point of view, it is important that the biological processes applied during the operation can be controlled and terminated. Our goal was to determine the possibility to use natural saline mine water for the inactivation of introduced IOB remaining in the in-situ reactor after completion of the leaching process of the Kupferschiefer ore. Aerobic and anaerobic microcosms containing acid-leached (pH 2) sandstone or black shale from the Kupferschiefer in the Rudna mine were further leached with the effluent from an iron-oxidizing bioreactor, at a temperature of 30°C, for 10 days, to simulate in-situ leaching. After the removal of the iron solution, residing IOB were inactivated by filling the microcosms with saline water (65 g L -1 Cl -) originating from the mine. The saline water completely inactivated the IOB and the naturally occurring saline water of the mine can be used for long-term post process inactivation of bioleaching microorganisms.

Original languageEnglish
Title of host publication22nd International Biohydrometallurgy Symposium
EditorsSabrina Hedrich, Kathrin Rübberdt, Franz Glombitza, Wolfgang Sand, Axel Schippers, Mario Vera Véliz, Sabine Willscher
Pages57-60
Number of pages4
DOIs
Publication statusPublished - 1 Jan 2017
MoE publication typeA4 Article in a conference publication

Publication series

SeriesSolid State Phenomena
Volume262
ISSN1012-0394

Fingerprint

Bioleaching
microorganisms
Microorganisms
deactivation
Iron
iron
evaluation
bacteria
Saline water
Bacteria
leaching
water
Leaching
Copper
reactors
bioreactors
copper
Poland
effluents
sandstones

Keywords

  • In situ bioleaching
  • inactivation
  • iron-oxidizing bacteria

Cite this

Bomberg, M., Miettinen, H., Wahlström, M., Kaartinen, T., Ahoranta, S., Lakaniemi, A. M., & Kinnunen, P. (2017). Evaluation of Long-Term Post Process Inactivation of Bioleaching Microorganisms. In S. Hedrich, K. Rübberdt, F. Glombitza, W. Sand, A. Schippers, M. V. Véliz, & S. Willscher (Eds.), 22nd International Biohydrometallurgy Symposium (pp. 57-60). Solid State Phenomena, Vol.. 262 https://doi.org/10.4028/www.scientific.net/SSP.262.57
Bomberg, Malin ; Miettinen, Hanna ; Wahlström, Margareta ; Kaartinen, Tommi ; Ahoranta, Sarita ; Lakaniemi, Aino Maija ; Kinnunen, Päivi. / Evaluation of Long-Term Post Process Inactivation of Bioleaching Microorganisms. 22nd International Biohydrometallurgy Symposium. editor / Sabrina Hedrich ; Kathrin Rübberdt ; Franz Glombitza ; Wolfgang Sand ; Axel Schippers ; Mario Vera Véliz ; Sabine Willscher. 2017. pp. 57-60 (Solid State Phenomena, Vol. 262).
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abstract = "The H2020 BioMOre project (www.biomore.info, Grant Agreement #642456) tests the feasibility of in-situ bioleaching of copper in deep subsurface deposits in the Rudna Mine, Poland. Copper is leached using biologically produced ferric iron solution, which is recycled back to the in-situ reactor after re-oxidation by iron-oxidizing bacteria (IOB). From a post operational point of view, it is important that the biological processes applied during the operation can be controlled and terminated. Our goal was to determine the possibility to use natural saline mine water for the inactivation of introduced IOB remaining in the in-situ reactor after completion of the leaching process of the Kupferschiefer ore. Aerobic and anaerobic microcosms containing acid-leached (pH 2) sandstone or black shale from the Kupferschiefer in the Rudna mine were further leached with the effluent from an iron-oxidizing bioreactor, at a temperature of 30°C, for 10 days, to simulate in-situ leaching. After the removal of the iron solution, residing IOB were inactivated by filling the microcosms with saline water (65 g L -1 Cl -) originating from the mine. The saline water completely inactivated the IOB and the naturally occurring saline water of the mine can be used for long-term post process inactivation of bioleaching microorganisms.",
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author = "Malin Bomberg and Hanna Miettinen and Margareta Wahlstr{\"o}m and Tommi Kaartinen and Sarita Ahoranta and Lakaniemi, {Aino Maija} and P{\"a}ivi Kinnunen",
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editor = "Sabrina Hedrich and Kathrin R{\"u}bberdt and Franz Glombitza and Wolfgang Sand and Axel Schippers and V{\'e}liz, {Mario Vera} and Sabine Willscher",
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Bomberg, M, Miettinen, H, Wahlström, M, Kaartinen, T, Ahoranta, S, Lakaniemi, AM & Kinnunen, P 2017, Evaluation of Long-Term Post Process Inactivation of Bioleaching Microorganisms. in S Hedrich, K Rübberdt, F Glombitza, W Sand, A Schippers, MV Véliz & S Willscher (eds), 22nd International Biohydrometallurgy Symposium. Solid State Phenomena, vol. 262, pp. 57-60. https://doi.org/10.4028/www.scientific.net/SSP.262.57

Evaluation of Long-Term Post Process Inactivation of Bioleaching Microorganisms. / Bomberg, Malin (Corresponding author); Miettinen, Hanna; Wahlström, Margareta; Kaartinen, Tommi; Ahoranta, Sarita; Lakaniemi, Aino Maija; Kinnunen, Päivi.

22nd International Biohydrometallurgy Symposium. ed. / Sabrina Hedrich; Kathrin Rübberdt; Franz Glombitza; Wolfgang Sand; Axel Schippers; Mario Vera Véliz; Sabine Willscher. 2017. p. 57-60 (Solid State Phenomena, Vol. 262).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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T1 - Evaluation of Long-Term Post Process Inactivation of Bioleaching Microorganisms

AU - Bomberg, Malin

AU - Miettinen, Hanna

AU - Wahlström, Margareta

AU - Kaartinen, Tommi

AU - Ahoranta, Sarita

AU - Lakaniemi, Aino Maija

AU - Kinnunen, Päivi

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N2 - The H2020 BioMOre project (www.biomore.info, Grant Agreement #642456) tests the feasibility of in-situ bioleaching of copper in deep subsurface deposits in the Rudna Mine, Poland. Copper is leached using biologically produced ferric iron solution, which is recycled back to the in-situ reactor after re-oxidation by iron-oxidizing bacteria (IOB). From a post operational point of view, it is important that the biological processes applied during the operation can be controlled and terminated. Our goal was to determine the possibility to use natural saline mine water for the inactivation of introduced IOB remaining in the in-situ reactor after completion of the leaching process of the Kupferschiefer ore. Aerobic and anaerobic microcosms containing acid-leached (pH 2) sandstone or black shale from the Kupferschiefer in the Rudna mine were further leached with the effluent from an iron-oxidizing bioreactor, at a temperature of 30°C, for 10 days, to simulate in-situ leaching. After the removal of the iron solution, residing IOB were inactivated by filling the microcosms with saline water (65 g L -1 Cl -) originating from the mine. The saline water completely inactivated the IOB and the naturally occurring saline water of the mine can be used for long-term post process inactivation of bioleaching microorganisms.

AB - The H2020 BioMOre project (www.biomore.info, Grant Agreement #642456) tests the feasibility of in-situ bioleaching of copper in deep subsurface deposits in the Rudna Mine, Poland. Copper is leached using biologically produced ferric iron solution, which is recycled back to the in-situ reactor after re-oxidation by iron-oxidizing bacteria (IOB). From a post operational point of view, it is important that the biological processes applied during the operation can be controlled and terminated. Our goal was to determine the possibility to use natural saline mine water for the inactivation of introduced IOB remaining in the in-situ reactor after completion of the leaching process of the Kupferschiefer ore. Aerobic and anaerobic microcosms containing acid-leached (pH 2) sandstone or black shale from the Kupferschiefer in the Rudna mine were further leached with the effluent from an iron-oxidizing bioreactor, at a temperature of 30°C, for 10 days, to simulate in-situ leaching. After the removal of the iron solution, residing IOB were inactivated by filling the microcosms with saline water (65 g L -1 Cl -) originating from the mine. The saline water completely inactivated the IOB and the naturally occurring saline water of the mine can be used for long-term post process inactivation of bioleaching microorganisms.

KW - In situ bioleaching

KW - inactivation

KW - iron-oxidizing bacteria

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M3 - Conference article in proceedings

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A2 - Hedrich, Sabrina

A2 - Rübberdt, Kathrin

A2 - Glombitza, Franz

A2 - Sand, Wolfgang

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A2 - Véliz, Mario Vera

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ER -

Bomberg M, Miettinen H, Wahlström M, Kaartinen T, Ahoranta S, Lakaniemi AM et al. Evaluation of Long-Term Post Process Inactivation of Bioleaching Microorganisms. In Hedrich S, Rübberdt K, Glombitza F, Sand W, Schippers A, Véliz MV, Willscher S, editors, 22nd International Biohydrometallurgy Symposium. 2017. p. 57-60. (Solid State Phenomena, Vol. 262). https://doi.org/10.4028/www.scientific.net/SSP.262.57