Phytoremediation with Medicago sativa and Taraxacum officinale for the remediation of heavy metal-contaminated soil from a landfill site
DOI:
https://doi.org/10.51252/reacae.v3i1.649Keywords:
contamination, phytotechnology, toxicity, treatmentAbstract
Phytotechnology through phytoremediation has definite advantages such as efficiency and reduced cost of its application for the remediation of contaminated soils compared to conventional physicochemical techniques. In this study, the potential of Medicago sativa and Taraxacum officinale species to remediate soils contaminated with heavy metals (lead, mercury and cadmium) at the Yacucatina solid waste dump was evaluated. Although the initial concentration of lead in the soil (9.41 mg/kg) was below the ECA of 70 mg/kg, cadmium (5.60 mg/kg) exceeded the permitted limit of 1.4 mg/kg. After applying phytoremediation with Medicago sativa, the average concentration of lead decreased to 8.50 mg/kg and cadmium to 1.13 mg/kg, while with Taraxacum officinale the final values were 7.39 mg/kg for lead and 1.36 mg/kg for cadmium, complying with environmental standards. In terms of removal efficiency, Medicago sativa showed an efficiency of 9.68 % for lead and 79.82 % for cadmium, while Taraxacum officinale showed an efficiency of 21.57 % for lead and 75.71 % for cadmium; concluding that both species showed promise for the decontamination of soils affected by heavy metals.
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Copyright (c) 2024 Karina Silva-Mori, Wildoro Ramírez Ramírez, Delmester Chuquimbalqui-Marina, Yrwin Daniel Azabache-Aliaga
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