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Chitosan‐Coated Glass Beads in a Fluidized Bed for Use in Fixed‐Bed Dye Adsorption
Author(s) -
da Silva Alves Daniele Costa,
Capa Verde Pires Roni Anderson,
Algã Francine Fonseca Diniz,
Gonçalves Janaina Oliveira,
Dotto Guilherme Luiz,
de Almeida Pinto Luiz Antonio,
Felipe Carlos Alberto Severo
Publication year - 2021
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.202000307
Subject(s) - adsorption , chitosan , coating , bead , chemical engineering , fluidized bed , materials science , aqueous solution , chromatography , composite material , chemistry , organic chemistry , engineering
Abstract The effects of the inlet air temperature and two chitosan solutions, pure or with coating auxiliaries, on the coating efficiency of glass beads in a fluidized bed were analyzed. The coated beads were used in a fixed‐bed column for adsorption of reactive black 5 dye in aqueous solution, and the effects of the pH and the coating solution formulation on the adsorption capacity were investigated. The glass bead coating process reached higher efficiencies at an air temperature of 80 °C with pure chitosan solution. The highest adsorption capacities were found at pH 3, using the beads coated with pure chitosan solution. All dynamic adsorption models were suitable to represent the breakthrough curves. The high values found for the coating efficiency and adsorption capacity prove these methods to be promising in dye adsorption.