Time and particle size of Musa Sapientum shell on the adsorption of Cu and Pb in mining effluent
DOI:
https://doi.org/10.17268/rev.cyt.2024.04.06Keywords:
Mining efluente, heavy metals, solid waste, contact time, particle sizeAbstract
The study focused on the reduction of solid waste, especially banana peels, and the treatment of effluents generated by mining, which contain heavy metals such as lead (Pb) and copper (Cu). It was observed that banana peel (Musa Sapientum) can be used to reduce the concentration of these metals in mining effluent discharges. The results showed a decrease in the concentrations of Pb and Cu, from 50,25 mg/L and 21,75 mg/L to 21,70 mg/L and 14,61 mg/L, respectively. The treatment time with banana peel increased the removal efficiency: treatment from 10 to 120 minutes improved the removal of copper (from 31,86% to 32,61%) and lead (from 53,96% to 56,26%). In addition, the particle size of the shell influenced the absorption capacity: the smaller the particle size (from 0,147 mm to 0,074 mm), the higher the absorption rates of both metals, reaching 32,66% absorption of copper and 55,80% of lead. The statistical results (ANOVA) indicated that both the particle size and the treatment time have a positive impact on the removal of these metals, with a p value less than 0,05. In conclusion, it is determined that the ideal treatment period is 120 minutes and the optimal particle size for the highest absorption of heavy metals is 0,074 mm.
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