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Type: Artigo
Title: New perception of the continuous biosorption of cadmium on a seaweed derivative waste
Author: Nishikawa, Emily
Cardoso, Saulo Luiz
Dias Costa, Camila Stefanne
Carlos da Silva, Meuris Gurgel
Adeodato Vieira, Melissa Gurgel
Abstract: This study investigated the alginate extraction residue from brown seaweed Sargassum filipendula for cadmium removal by biosorption in a fixed-bed system. This residue is frequently thrown into the sea, causing pollution concerns. The condition selected for the study of biosorption-desorption cycles was: flow rate of 0.5 mL/min and inlet concentration of 1.5 mmol/L. Two biosorption-desorption cycles were performed using CaCl2 as the eluent; however, the MTZ length increased substantially after the first cycle, indicating decreased column efficiency. The Yan model was the most descriptive for the experimental data. The FTIR analysis indicated the involvement of sulfurous, amine, and carboxylic groups. SEM/EDX results suggested the participation of an ion exchange mechanism and revealed a homogeneous deposition of metal ions on the biosorbent surface. The cost estimation showed that the employment of the dealginated residue is economically beneficial, similarly to bagasse fly ash, compared to commercial activated carbon
Subject: Cádmio
Country: Países Baixos
Editor: Elsevier
Rights: Fechado
Identifier DOI: 10.1016/j.jwpe.2020.101322
Date Issue: Aug-2020
Appears in Collections:FEQ - Artigos e Outros Documentos

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