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KINETICS AND EQUILIBRIUM STUDY FOR THE BIOSORPTION OF LANTHANUM BY PENICILLIUM SIMPLICISSIMUM INCQS 40,211
Affilliation
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ Brazil.
Fundação Oswaldo Cruz. Instituto Nacional de Controle de Qualidade Em Saúde. Rio de Janeiro, RJ Brazil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ Brazil.
Centro de Tecnologia Mineral. Rio de Janeiro, RJ, Brazil.
Fundação Oswaldo Cruz. Instituto Nacional de Controle de Qualidade Em Saúde. Rio de Janeiro, RJ Brazil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ Brazil.
Centro de Tecnologia Mineral. Rio de Janeiro, RJ, Brazil.
Abstract
Lanthanum (La) is a light rare-earth element that plays an essential role in manufacturing technological products, clean technologies, medical products, electron cathodes, scintillators, fluorescent lamps, and fertilizers. This study is the first investigation of La3+ biosorption using inactive lyophilized biomass from Penicillium simplicissimum INCQS 40,211. The maximum sorption capacity (qmax) for P. simplicissimum was 7.81 mg g-1. La 3+ biosorption followed the Freundlich model, where the biosorption system possibly multilayer coverage of P. simplicissimum by lanthanum ions. The kinetic data for the adsorption process obeyed a pseudo-second-order (R 2 > 0.92), indicating chemical sorption. The results indicated that inactive lyophilized biomass from Penicillium simplicissimum INCQS 40211are an excellent candidate for removing light rare-earth elements from aquatic environments.
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