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Chemical and Biochemical Engineering Quarterly, Vol. 35 No. 4, 2021.

Original scientific paper

https://doi.org/10.15255/CABEQ.2021.1979

Açaí Seeds as a Prospective Biosorbent for Acid Dyes Removal

R. Rossetto ; Programa de Pós-Graduação em Engenharia de Alimentos (PPGEAL), Universidade Federal do Paraná (UFPR), Curitiba, CEP 81531-980, PR, Brazil
G. M. Maciel ; Laboratório de Biotecnologia, Departamento Acadêmico de Química e Biologia (DAQBi), UniversidadeTecnológica Federal do Paraná (UTFPR), Curitiba, CEP 81280-340, PR, Brazil
I. de Andrade Arruda Fernandes ; Programa de Pós-Graduação em Engenharia de Alimentos (PPGEAL), Universidade Federal do Paraná (UFPR), Curitiba, CEP 81531-980, PR, Brazil
T. A. Modkovski ; Laboratório de Biotecnologia, Departamento Acadêmico de Química e Biologia (DAQBi), UniversidadeTecnológica Federal do Paraná (UTFPR), Curitiba, CEP 81280-340, PR, Brazil
M. A. Semião ; Laboratório de Biotecnologia, Departamento Acadêmico de Química e Biologia (DAQBi), UniversidadeTecnológica Federal do Paraná (UTFPR), Curitiba, CEP 81280-340, PR, Brazil
T. Brugnari ; Laboratório de Biotecnologia, Departamento Acadêmico de Química e Biologia (DAQBi), UniversidadeTecnológica Federal do Paraná (UTFPR), Curitiba, CEP 81280-340, PR, Brazil
C. W. I. Haminiuk ; Laboratório de Biotecnologia, Departamento Acadêmico de Química e Biologia (DAQBi), UniversidadeTecnológica Federal do Paraná (UTFPR), Curitiba, CEP 81280-340, PR, Brazil

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Abstract

In this study, were used residual Açaí seeds as a biosorbent for two textile dyes (Acid Yellow 219 (AY) and Acid Red 361 (AR)), in single and binary solutions.
Further, kinetic and isothermal studies were carried to evaluate if the chemical modifications in the Açaí seeds would promote an increase in biosorption. Kinetic assays for all solutions showed that more than 50 % of the dyes were removed in the first 15 minutes. The acid treatment of the biosorbent increased the removal of acid dyes in solution by 46 % and 32 %, respectively. In conclusion, chemically modified Açaí seeds showed high capacity for the removal of textile dyes in single (AY qe = 1.40 mg g-1; AR qe = 1.76 mg g–1) and multi-component solutions (AY MIX qe = 2.09 mg g–1; AR MIX qe = 2.23 mg g–1). These results demonstrate that Açaí seeds can be applied in an inexpensive strategy for removing pollutants (single or binary solutions) from wastewater.







This work is licensed under a Creative Commons Attribution 4.0 International License.

Keywords

biosorption; nonlinear models; kinetic models; selectivity factor; waste management; biomass valorization

Hrčak ID:

271024

URI

https://hrcak.srce.hr/271024

Publication date:

18.1.2022.

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