Desenvolvimento de sensor de baixo custo e avaliação de Jacarandá-Mimoso (Jacaranda mimosifolia D. Don) para fitorremediação de zinco em amostras de solo

Abstract

Remedying soils contaminated by heavy metals has become a necessity nowadays. Thus, the objective of this work was to evaluate the ability of Jacaranda mimoso (Jacaranda mimosifolia), which is a forest species (EF) to extract the heavy metal zinc in soil columns. The experiment was carried out in a completely randomized design, in soil columns with EF cultivation in which different concentrations of ZnCl2 (0, 50, 100 and 200 mg/Kg) will be added. The plants remained in contaminated soil for 29 days. Zinc concentrations in substrates and plant tissues were determined by Flame Atomic Absorption Spectrophotometry (FAAS) and used to evaluate the efficiency of removing metals from the soil. The plant was resistant to zinc up to a concentration of 200 mg/kg of zinc. Presenting good development at concentrations of 50 and 200 mg/kg of zinc. The results obtained were compared with other works and indicated that the Jacarandá-mimoso species can be used in areas contaminated by the heavy metal Zn and has a phytoremediation potential for this metal up to a concentration of 200 mg/Kg.