RT Journal Article
T1 Microbial biominers: Sequential bioleaching and biouptake of metals from electronic scraps
A1 García Balboa, María Del Camino
A1 Martínez‐Alesón García, Paloma
A1 López Rodas, Victoria
A1 Costas Costas, Eduardo
A1 Baselga Cervera, Beatriz
AB Electronic scraps (e‐scraps) represent an attractive raw material to mine demandedmetals, as well as rare earth elements (REEs). A sequential microbial‐mediated pro-cess developed in two steps was examined to recover multiple elements. First, wemade use of an acidophilic bacteria consortium, mainly composed of Acidiphiliummultivorum and Leptospidillum ferriphilum, isolated from acid mine drainages. Theconsortium was inoculated in a dissolution of e‐scraps powder and cultured for15 days. Forty‐five elements were analyzed in the liquid phase over time, includingsilver, gold, and 15 REEs. The bioleaching efficiencies of the consortium were >99%for Cu, Co, Al, and Zn, 53% for Cd, and around 10% for Cr and Li on Day 7. Thesecond step consisted of a microalgae‐mediated uptake from e‐scraps leachate. Thestrains used were two acidophilic extremotolerant microalgae, Euglena sp. (EugVP)and Chlamydomonas sp. (ChlSG) strains, isolated from the same extreme environ-ment. Up to 7.3, 4.1, 1.3, and 0.7 µg by wet biomass (WB) of Zn, Al, Cu, and Mn,respectively, were uptaken by ChlSG biomass in 12 days, presenting higher effi-ciency than EugVP. Concerning REEs, ChlSG biouptake 14.9, 20.3, 13.7, 8.3 ng ofGd, Pr, Ce, La per WB. Meanwhile, EugVP captured 1.1, 1.5, 1.4, and 7.5, respec-tively. This paper shows the potential of a microbial sequential process to revalorizee‐scraps and recover metals and REEs, harnessing extremotolerant microorganisms
PB Wiley
SN 2045-8827
YR 2022
FD 2022-02
LK https://hdl.handle.net/20.500.14352/115882
UL https://hdl.handle.net/20.500.14352/115882
LA eng
NO García Balboa, Camino; Martínez-Alesón García, Paloma; López Rodas, Victoria; Costas Costas, Eduardo; Baselga Cervera, Beatriz. Microbial biominers: Sequential bioleaching and biouptake of metals from electronic scraps. Microbiology Open. Wiley, 18/01/2022.
NO Author contributions: Camino García-Balboa: conceptualization (lead), data curation (equal), formal analysis (equal), investigation (equal), writing–original draft (supporting), writing–review and editing (equal). Paloma Martínez-Alesón: conceptualization (supporting), formal analysis (supporting), investigation (equal), writing–original draft (supporting), writing–review and editing (equal). Victoria López-Rodas: funding acquisition (lead), supervision (equal), writing–review and editing (equal). Eduardo Costas: funding acquisition (lead), supervision (equal), writing–review and editing (equal). Beatriz Baselga-Cervera: conceptualization (supporting), data curation (equal), formal analysis (equal), funding acquisition (supporting), visualization (lead), writing–original draft (lead), writing–review and editing (lead).
NO Fundación Alfonso Martín Escudero
DS Docta Complutense
RD 4 abr 2025