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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Synthesis, characterization, and application of yeast-based magnetic bionanocomposite for the removal of Cu(II) from water

Texto completo
Autor(es):
Jose, Julia Cristina [1] ; Debs, Karina Bugan [2] ; Labuto, Georgia [3, 2] ; Vasconcelos Martins Carrilho, Elma Neide [1, 4]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Fed Sao Carlos, Lab Mat Polimericos & Biossorventes, BR-13600970 Araras, SP - Brazil
[2] Univ Fed Sao Paulo, Grp Anal Quim Aplicadas, Diadema - Brazil
[3] Univ Fed Sao Paulo, Dept Quim, Diadema - Brazil
[4] Univ Fed Sao Carlos, Dept Ciencias Nat Matemat & Educ, Araras - Brazil
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: Chemical Engineering Communications; JUN 2019.
Citações Web of Science: 0
Resumo

Due to the amount of yeast residues generated by the industries and their high capacity as biosorbent, this work proposes the use of yeast biomass in natura (YB) or modified with ferromagnetic nanoparticles (Fe3O4) (YB-MNP) for Cu(II) removal from water. Synthesized YB-MNP, YB, and magnetite alone (MNP) were characterized by FTIR, XRD, and SEM. It was observed the efficient impregnation of magnetite on the surface of the biomass. Copper sorption was evaluated in batch tests using 100 mg/L of Cu(II) solution at pH 5.5, and the supernatant was analyzed by FAAS for Cu determination. Langmuir, Freundlich, and Dubinin-Radushkevich (D-R) isotherm models were applied to fit the experimental data. A favorable sorption process was observed for all the materials, mainly for the D-R model adjusted to the bionanocomposite data (YB-MNP), with r(2) = 0.9950 and a low error (chi(2) = 0.0427) associated to the model. Theoretical and experimentally Cu(II) sorption capacities were fairly similar, 8.6 +/- 0.1 and 8.3 +/- 0.2 mg/g, respectively. (AU)

Processo FAPESP: 16/06271-4 - Desenvolvimento de materiais adsorventes a partir de resíduo de biomassa de levedura proveniente de processos fermentativos industriais para remoção de contaminantes emergentes de águas e efluentes
Beneficiário:Geórgia Christina Labuto Araújo
Linha de fomento: Auxílio à Pesquisa - Regular