Evaluation of the efficiency of biosorption of lead, cadmium and chromium by the biomass of bark pequi fruit (caryocar brasiliense camb.)
Carregando...
Data
2012-06
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
Effluents containing metals may come from different types of industries, including paper mills,
petrochemical plants, inorganic reagents and fertilizers, petroleum refining, steel foundries and metal
working, textile mills, leather tanning, and others. These industries produce large volumes of
wastewater requiring efficient and low-cost treatment.Pequi (Caryocar brasiliense Camb.) is a fruit
native to the Brazilian cerrado, and its skin, which represents about 60% by weight of the fruit, is often
overlooked during processing. In this work, pequi skins were used as biosorbent material in solutions
containing chromium, lead, and cadmium. Factors such as biomass dose, pH, and biomass size were
studied using a factorial statistical design. The results showed that the metal with the highest
biosorption in the biomass was lead, with anaverage biosorption of 16.78 mg.g-1 and up to 80%
removal of the solution, while there was less removal of chromium and cadmium. The dose of biomass
and pH were found to be the most important factors in the biosorption. The grain size, on the other
hand, generally did not influence the adsorption and can be discounted among the factors that act in
the process.
Descrição
Palavras-chave
Citação
SEOLATTO, Aaraceli A.; SILVA FILHO, Carlos J. ; MOTA, Diana .L. F. Evaluation of the efficiency of biosorption of lead, cadmium and chromium by the biomass of bark pequi fruit (caryocar brasiliense camb.). Chemical Engineering Transactions, Budapeste, v. 27, p. 73-78, June. 2012.