Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Biotechnological Tool for Metal(loids) Management with Multiple Approaches

Adalgisa Scotti
* ORCID logo ,
Ana Rosa Castaño Gañan
ORCID logo ,
Vanesa Analia Silvani
ORCID logo ,
Natalia Andrea Juarez
,
Gabriela Coria
,
Sofía Utge Perri
,
Roxana Paula Colombo
,
Inmaculada García Romera
ORCID logo ,
María Luisa Izaguirre-Mayoral
ORCID logo ,
Alicia Margarita Godeas
,
Stefano Ubaldini
Version 1 : Received: 22 September 2024 / Approved: 23 September 2024 / Online: 24 September 2024 (04:05:37 CEST)

How to cite: Scotti, A.; Castaño Gañan, A. R.; Silvani, V. A.; Juarez, N. A.; Coria, G.; Utge Perri, S.; Colombo, R. P.; García Romera, I.; Izaguirre-Mayoral, M. L.; Godeas, A. M.; Ubaldini, S. Biotechnological Tool for Metal(loids) Management with Multiple Approaches. Preprints 2024, 2024091719. https://doi.org/10.20944/preprints202409.1719.v1 Scotti, A.; Castaño Gañan, A. R.; Silvani, V. A.; Juarez, N. A.; Coria, G.; Utge Perri, S.; Colombo, R. P.; García Romera, I.; Izaguirre-Mayoral, M. L.; Godeas, A. M.; Ubaldini, S. Biotechnological Tool for Metal(loids) Management with Multiple Approaches. Preprints 2024, 2024091719. https://doi.org/10.20944/preprints202409.1719.v1

Abstract

Contaminated soils are a challenge for implementing biotechnology in bioremediation, recovery of Critical and Strategic Raw Materials (CRMs and SRMs), and food security. European Union (EU) Governments have established strict limits on As, Pb, Cd, and Hg in foods (Document 32023R0915), and requested the recovery of 34 CRMs within a circular economy (CE) (5th CRMs list). This study proposed a biotechnological tool for the decontamination of soil with heavy metal(loids) by arbuscular mycorrhizal (AM)-assisted phytoextraction and subsequent recovery of CRMs, or by phytostabilization to prevent their entry into the food chain. It consisted of placing Baccharis salicifolia plants, inoculated or non-inoculated with AM fungi, into Bioreactors (BRs) containing mining soil with Cd, Ni, and Cu, according to the argentinian Patent (AR090183B1). The bioextractive potential (BP) was also estimated at the highest Technological Readiness Level (TRL) using a Vegetable Depuration Module (VDM, TRL 6). Inoculated plants showed significantly higher aerial bioaccumulation coefficients (Cd: 68.62; P: 2.99; Ni: 2.51; Cu: 0.18) in BRs, and the BP values reached 1.16 g, 9.75 g, 2.40 g, and 213.1 g for Ni, Cd, Cu, and P, respectively. Finally, those CRMs and SRMs could be recovered from biomass through hydrometallurgy within a CE framework.

Keywords

food security; circular economy; mycorrhizal-assisted phytomanagement; TRL 6; CRM

Subject

Environmental and Earth Sciences, Waste Management and Disposal

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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