Investigation of the simultaneous biosorption of toxic metals through a mixture design application

Autor(es)

Dias Costa, Camila Stefanne ^[1] ; Carlos da Silva, Meuris Gurgel ^[1] ; Adeodato Vieira, Melissa Gurgel ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Chem Engn, BR-13083852 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF CLEANER PRODUCTION; v. 200, p. 890-899, NOV 1 2018.
• Citações Web of Science: 4

Resumo

This study evaluated the use of the alginate extraction residue (RES) from Sargassum filipendula as biosorbent for the simultaneous biosorption of Cr(III), Ni(II) and Zn(II) applying a mixture design (MD) to evaluate the effects on the total biosorption capacity (q(t)). Inhibitory effects of Cr(III) on the biosorption of the divalent ions were observed, while Zn(II) exhibited contrary effects on the other ions, inhibiting and inducting Cr(III) and Ni(II), respectively. On the other hand, Ni(II) had the lowest interaction effect, inhibiting Zn(II) only. Ion exchange mechanism was verified by characterization analyses, which also revealed a homogenous distribution of metals over the surface of biosorbent. Major involvement of hydroxyl, carboxylic and sulfonic groups was also revealed, but the participation of other acid functions may occur. Cr(III) was favorably adsorbed by RES in all systems, exerting a significant synergic effect on q(t). (C) 2018 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 14/04050-5 - Avaliação de resíduo da extração de alginato da alga Sargassum filipendula como bioadsorvente em processo de remoção de metais tóxicos
• Beneficiário: Meuris Gurgel Carlos da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Regular