Heterotrophic Bacterial Leaching of Zinc and Arsenic from Artificial Adamite

Marek Kolenčík, Hana Vojtková, Martin Urík, Mária Čaplovičová, Jaromír Pištora, Michael Cada, Aneta Babičová, Huan Feng, Yu Qian, Illa Ramakanth

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6 Scopus citations

Abstract

Artificial adamite [Zn2(AsO4)(OH)] is a convenient structural model because it is isostructural with other rock-forming minerals in secondary ore deposits formed in cementation zones. Microbial activity in these zones accelerates mineral biogeochemical deterioration and metal release, and our results confirmed that Pseudomonas, Rhodococcus and Cupriavidus strains accelerate adamite leaching by 10 to 465 times compared to controls. Here, the Pseudomonas chlororaphis ZK-1 bacterial strain in a static 42-day cultivation proved more effective than Rhodococcus and Cupriavidus by leaching over 90% arsenic and 10% zinc from adamite in one-step in vitro. We evaluated adamite with the VESTA visualization system for electronic and structural analysis, and our results enhance understanding of zinc and arsenic biogeochemical cycles and mobilization, and highlight bacteria’s beneficial natural and biotechnological application in environmental geochemistry and biohydrometallurgy.

Original languageEnglish
JournalWater, Air, and Soil Pollution
Volume228
Issue number6
DOIs
StatePublished - 1 Jan 2017

Keywords

  • Adamite
  • Arsenic
  • Bacterial leaching
  • Biodeterioration
  • Pseudomonas chlororaphis
  • Zinc

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    Kolenčík, M., Vojtková, H., Urík, M., Čaplovičová, M., Pištora, J., Cada, M., Babičová, A., Feng, H., Qian, Y., & Ramakanth, I. (2017). Heterotrophic Bacterial Leaching of Zinc and Arsenic from Artificial Adamite. Water, Air, and Soil Pollution, 228(6). https://doi.org/10.1007/s11270-017-3400-y