Treatment of vinasse by adsorption on activated carbon from sugarcane bagasse agglomerated with Al2O3

Autor: Ramiro Picoli Nippes, Paula Derksen Macruz, Nádia Regina Camargo Fernandes, Marcelino Luiz Gimenes
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Acta Scientiarum. Technology; Vol 44 (2022): Publicação contínua; e56265
Acta Scientiarum. Technology; v. 44 (2022): Publicação contínua; e56265
Acta scientiarum. Technology
Universidade Estadual de Maringá (UEM)
instacron:UEM
ISSN: 1806-2563
1807-8664
Popis: The objective of this work was to produce and characterize activated carbon from sugarcane bagasse agglomerated with Alumina (Al2O3) and apply it in treatment of vinasse pretreated by coagulation-flocculation to reduce the toxics parameters of vinasse. The adsorbent was characterized from textural analysis, XRD, pHZPC, SEM and EDS. Adsorption isotherms, adsorption kinetics and thermodynamic parameters of the process were obtained. The Langmuir isotherm model fitted the experimental data better and the pseudo-first-order model best represented the adsorption kinetics. The process was spontaneous, exothermic and with increased entropy. The combined coagulation-flocculation/adsorption process was efficient in reducing the parameters of color, turbidity, COD, TOC and toxicity of the vinasse with removal rates of 73.50, 96.06, 72.65, 76.08, 78% respectively. The objective of this work was to produce and characterize activated carbon from sugarcane bagasse agglomerated with Alumina (Al2O3) and apply it in treatment of vinasse pretreated by coagulation-flocculation to reduce the toxics parameters of vinasse. The adsorbent was characterized from textural analysis, XRD, pHZPC, SEM and EDS. Adsorption isotherms, adsorption kinetics and thermodynamic parameters of the process were obtained. The Langmuir isotherm model fitted the experimental data better and the pseudo-first-order model best represented the adsorption kinetics. The process was spontaneous, exothermic and with increased entropy. The combined coagulation-flocculation/adsorption process was efficient in reducing the parameters of color, turbidity, COD, TOC and toxicity of the vinasse with removal rates of 73.50, 96.06, 72.65, 76.08, 78% respectively.
Databáze: OpenAIRE
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