Advanced search
1 file | 3.55 MB Add to list

Bioleaching of metals from secondary materials using glycolipid biosurfactants

Author
Organization
Abstract
With the global demand for economically important metals increasing, compounded by the depletion of readily accessible ores, secondary resources and low-grade ores are being targeted to meet growing demands. Novel technologies developed within biobased industries, such as microbial biosurfactants, could be implemented to improve the sustainability of traditional hydrometallurgy techniques. This study investigates newly developed microbial biosurfactants (acidic- and bolaform glycolipids) for the leaching of metals (particularly Cu and Zn) from a suite of mine tailings, metallurgical sludges and automotive shredder residues. Generally, acidic sophorolipids were the most performant, and optimal Cu leaching was observed from a fayalite slag (27%) and a copper sulfide mine tailing (53%). Further investigation of the leached fayalite material showed that leaching was occurring from small metallic Cu droplets in this material via a corrosion-based mechanism, and/or from Cu-Pb sulfides, selective against the dominant Fe-silicate matrix. This study highlights that acidic sophorolipid microbial biosurfactants have the potential to leach Cu and Zn from low-grade secondary materials. It also provides important fundamental insights into biosurfactant-metal and mineral interactions that are currently unexplored. Together, the convergence of leaching and mining industries with bio-industries can improve material recovery and will positively impact the bio- and circular economies and the environment.
Keywords
Sophorolipids, Bioleaching, Heavy metal recovery, Fayalite, Copper, HEAVY-METALS, CONTAMINATED SOIL, REMEDIATION, REMOVAL, EXTRACTION, SEDIMENTS, COPPER, SLAG, SURFACTANTS, MICELLES

Downloads

  • published.pdf
    • full text (Published version)
    • |
    • open access
    • |
    • PDF
    • |
    • 3.55 MB

Citation

Please use this url to cite or link to this publication:

MLA
Castelein, Martijn Georges, et al. “Bioleaching of Metals from Secondary Materials Using Glycolipid Biosurfactants.” MINERALS ENGINEERING, vol. 163, 2021, doi:10.1016/j.mineng.2020.106665.
APA
Castelein, M. G., Verbruggen, F., Van Renterghem, L., Spooren, J., Yurramendi, L., Du Laing, G., … Williamson, A. (2021). Bioleaching of metals from secondary materials using glycolipid biosurfactants. MINERALS ENGINEERING, 163. https://doi.org/10.1016/j.mineng.2020.106665
Chicago author-date
Castelein, Martijn Georges, Florian Verbruggen, Lisa Van Renterghem, Jeroen Spooren, Lourdes Yurramendi, Gijs Du Laing, Nico Boon, et al. 2021. “Bioleaching of Metals from Secondary Materials Using Glycolipid Biosurfactants.” MINERALS ENGINEERING 163. https://doi.org/10.1016/j.mineng.2020.106665.
Chicago author-date (all authors)
Castelein, Martijn Georges, Florian Verbruggen, Lisa Van Renterghem, Jeroen Spooren, Lourdes Yurramendi, Gijs Du Laing, Nico Boon, Wim Soetaert, Tom Hennebel, Sophie Roelants, and Adam Williamson. 2021. “Bioleaching of Metals from Secondary Materials Using Glycolipid Biosurfactants.” MINERALS ENGINEERING 163. doi:10.1016/j.mineng.2020.106665.
Vancouver
1.
Castelein MG, Verbruggen F, Van Renterghem L, Spooren J, Yurramendi L, Du Laing G, et al. Bioleaching of metals from secondary materials using glycolipid biosurfactants. MINERALS ENGINEERING. 2021;163.
IEEE
[1]
M. G. Castelein et al., “Bioleaching of metals from secondary materials using glycolipid biosurfactants,” MINERALS ENGINEERING, vol. 163, 2021.
@article{8688722,
  abstract     = {{With the global demand for economically important metals increasing, compounded by the depletion of readily accessible ores, secondary resources and low-grade ores are being targeted to meet growing demands. Novel technologies developed within biobased industries, such as microbial biosurfactants, could be implemented to improve the sustainability of traditional hydrometallurgy techniques. This study investigates newly developed microbial biosurfactants (acidic- and bolaform glycolipids) for the leaching of metals (particularly Cu and Zn) from a suite of mine tailings, metallurgical sludges and automotive shredder residues. Generally, acidic sophorolipids were the most performant, and optimal Cu leaching was observed from a fayalite slag (27%) and a copper sulfide mine tailing (53%). Further investigation of the leached fayalite material showed that leaching was occurring from small metallic Cu droplets in this material via a corrosion-based mechanism, and/or from Cu-Pb sulfides, selective against the dominant Fe-silicate matrix. This study highlights that acidic sophorolipid microbial biosurfactants have the potential to leach Cu and Zn from low-grade secondary materials. It also provides important fundamental insights into biosurfactant-metal and mineral interactions that are currently unexplored. Together, the convergence of leaching and mining industries with bio-industries can improve material recovery and will positively impact the bio- and circular economies and the environment.}},
  articleno    = {{106665}},
  author       = {{Castelein, Martijn Georges and Verbruggen, Florian and Van Renterghem, Lisa and Spooren, Jeroen and Yurramendi, Lourdes and Du Laing, Gijs and Boon, Nico and Soetaert, Wim and Hennebel, Tom and Roelants, Sophie and Williamson, Adam}},
  issn         = {{0892-6875}},
  journal      = {{MINERALS ENGINEERING}},
  keywords     = {{Sophorolipids,Bioleaching,Heavy metal recovery,Fayalite,Copper,HEAVY-METALS,CONTAMINATED SOIL,REMEDIATION,REMOVAL,EXTRACTION,SEDIMENTS,COPPER,SLAG,SURFACTANTS,MICELLES}},
  language     = {{eng}},
  pages        = {{11}},
  title        = {{Bioleaching of metals from secondary materials using glycolipid biosurfactants}},
  url          = {{http://dx.doi.org/10.1016/j.mineng.2020.106665}},
  volume       = {{163}},
  year         = {{2021}},
}

Altmetric
View in Altmetric
Web of Science
Times cited: