Work

Resistencia Al Cianuro Y Bioacumulación De Elementos Potencialmente Tóxicos En Especies Vegetales Desérticas Crecidas En Residuos Mineros Alcalinos: Estudio De Supervivencia Ambiental

Year: 2025

Type: article

Abstract: Background: The waste generated at the end of a mining process contains potentially toxic elements (PTEs) and, depending on the extraction method, may also contain cyanide. These threaten ecosystems because PTEs are non-biodegradable and can accumulate in organisms through bioaccumulation. Cyanide is particularly dangerous as it is highly toxic and can inhibit the growth of plant species that could be used in phytoremediation. Objective: To evaluate the cyanide survival capacity of four desert native plant species from the state of Baja California, and their ability to phytostabilize EPTs. Methodology: Completely randomized experiments were conducted under greenhouse conditions, using experimental units with mine tailings amended with four different proportions of plant compost as a mine tailings improver (0 %, 5 %, 10 %, and 15 %). Four native plant species were used for the study: Prosopis sp., Psorothamnus spinosus, Pluchea sericea, and Encelia farinosa. Results: Prosopis sp. demonstrated a high survival capacity in mine tailings containing cyanide (155 mg kg-1) and potentially toxic elements accumulated mainly in the root. Implications: Many plant species show adverse effects on their growth and development due to the toxicity of these elements. Furthermore, phytostabilizing species must be able to survive the climatic conditions of the area where this technique is implemented and tolerate cyanide. Conclusion: It was demonstrated that Prosopis sp. has phytostabilizing capacity by accumulating higher PTE concentrations in its roots without exceeding concentrations in the aerial part. The optimal treatments for this technique were those with 10 % and 15 % compost, which helped the species tolerate cyanide. Therefore, Prosopis sp. is confirmed as an effective native species for phytostabilization.

Source: Tropical and Subtropical Agroecosystems

DOI: 10.56369/tsaes.6026

Authors: María Guadalupe Rangel-Gonzalez, Fernando Amílcar Solís-Domínguez, Aseneth Herrera-Martínez, Jaime López-Luna, Rogelio Carrillo-González, Maria Del Carmen Cuevas-Diaz

Institutions: Universidad Autónoma de Baja California, Instituto de Ecología, Colegio de Postgraduados, Universidad Veracruzana

Language: English

Topic: Tailings Management and Properties

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Life on land, Responsible consumption and production

Open Access status: gold

Estimated APC paid: $150