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Title:Bioleaching process for copper extraction from waste in alkaline and acid medium
Authors:ID Ristović, Ivica (Author)
ID Štyriaková, Darina (Author)
ID Štyriakova, Iveta (Author)
ID Šuba, Jaroslav (Author)
ID Širadović, Emilija (Author)
Files:URL URL - Source URL, visit https://www.mdpi.com/2075-163X/12/1/100
 
.pdf PDF - Presentation file, download (3,29 MB)
MD5: 1F5E602480EFD772A8042E1E9740BB20
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:Flotation wastes are becoming a valuable secondary raw material and source of many metals and semimetals worldwide with the possibilities of industrial recycling. The flotation tailings contain oxide and sulfide minerals that have not been sufficiently stabilized and form acidic mine waters, which in turn contaminate groundwater, rivers, and reservoi6sediments. An effective way to recycle these mine wastes is to recover the metals through leaching. While the focus is on acid bioleaching by iron- and sulfur-oxidizing bacteria, alkaline leaching, and the removal of iron- containing surface coatings on sulfide minerals contribute significantly to the overall environmental efficiency of leaching. For this study, static and percolate bioleaching of copper from flotation waste at the Bor copper mine in Serbia was investigated in alkaline and then acidic environments. The aim of the study was to verify the effect of alkaline pH and nutrient stimulation on the bioleaching process and element extraction. A sample was taken from a mine waste site, which was characterized by XRF analyses. The concentration of leached copper was increased when copper oxide minerals dissolved during alkaline bioleaching. The highest copper yield during alkaline bioleaching was achieved after 9 days and reached 67%. The addition of nutrients in acidic medium enhanced the degradation of sulfide minerals and increased Cu recovery to 74%, while Fe and Ag recoveries were not significantly affected. Combined bioleaching with alkaline media and iron- and sulfur-oxidizing bacteria in acidic media should be a good reference for ecological Cu recovery from copper oxide and sulfide wastes.
Keywords:copper, alkaline, acidic bioleaching, secondary raw materials, open access
Publication status:Published
Publication version:Version of Record
Publication date:15.01.2022
Publisher:MDPI AG
Year of publishing:2022
Number of pages:str. 1-14
Numbering:Vol. 12, no. 1
PID:20.500.12556/DiRROS-15840 New window
UDC:620.1/.2
ISSN on article:2075-163X
DOI:10.3390/min12010100 New window
COBISS.SI-ID:97131267 New window
Copyright:© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Note:Nasl. z nasl. zaslona; Opis vira z dne 11. 2. 2022;
Publication date in DiRROS:05.05.2023
Views:788
Downloads:405
Metadata:XML DC-XML DC-RDF
:
RISTOVIĆ, Ivica, ŠTYRIAKOVÁ, Darina, ŠTYRIAKOVA, Iveta, ŠUBA, Jaroslav and ŠIRADOVIĆ, Emilija, 2022, Bioleaching process for copper extraction from waste in alkaline and acid medium. Minerals [online]. 2022. Vol. 12, no. 1, p. 1–14. [Accessed 16 March 2025]. DOI 10.3390/min12010100. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=15840
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Record is a part of a journal

Title:Minerals
Shortened title:Minerals
Publisher:MDPI AG
ISSN:2075-163X
COBISS.SI-ID:519985177 New window

Document is financed by a project

Funder:Other - Other funder or multiple funders
Project number:18248
Name:Zero waste recovery of copper wastes in the ESEE region
Acronym:RIS-CuRE

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Keywords:baker, alkalno, kislo biološko izpiranje, sekundarne surovine, odprti dostop


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