Produção Nacional
Revisado por pares
Phytoremediation potential of Khaya ivorensis and Cedrela fissilis in copper contaminated soil
2020; Elsevier BV; Volume: 268; Linguagem: Inglês
10.1016/j.jenvman.2020.110733
ISSN1095-8630
AutoresWatilla Pereira Covre, Wendel Valter da Silveira Pereira, Deyvison Andrey Medrado Gonçalves, Orivan Maria Marques Teixeira, Cristine Bastos do Amarante, Antônio Rodrigues Fernandes,
Tópico(s)Soil Management and Crop Yield
ResumoMineral exploration of copper (Cu) in the Amazon has significantly impacted the environment, leading to contamination of large areas that require remediation. Tropical tree species that can immobilize metals and restore plant cover should be selected for phytoremediation programs. The phytoremediation behavior of Khaya ivorensis and Cedrela fissilis was studied in Cu contaminated soil (60, 200, 400, and 600 mg kg−1). K. ivorensis absorbed extremely high amounts of Cu in the roots (329 mg kg−1) and excessive amounts in the shoot (52 mg kg−1), while maintaining similar growth to control plants. C. fissilis seedlings presented a higher Dickson quality index. Bioaccumulation (BCF) and translocation (TF) factors were low in both species, indicating that even with the high amounts of copper absorbed, these contents were lower than the soil concentration (BCF < 1) and that most of Cu was compartmentalized in the roots (TF < 1). The tolerance index of K. ivorensis (>1) and C. fissilis (~1) indicate their ability to grow in Cu contaminated soil. These results suggest that these species could potentially be used as phytoremediators.
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