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Open AccessArticle

Sugarcane Bagasse as an Efficient Biosorbent for Methylene Blue Removal: Kinetics, Isotherms and Thermodynamics

1
Centro Universitário de Maringá—Unicesumar, Maringá 87050-900, Brazil
2
Programa de Pós-Graduação em Tecnologias Limpas—Unicesumar, Instituto Cesumar de Ciência, Tecnologia e Inovação—ICETI, Maringá 87050-900, Brazil
3
Programa de Pós-Graduação em Engenharia Química, Departamento de Engenharia Química, Universidade Estadual de Maringá, Maringá 87020-900, Brazil
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2020, 17(2), 526; https://doi.org/10.3390/ijerph17020526 (registering DOI)
Received: 28 September 2019 / Revised: 24 October 2019 / Accepted: 25 October 2019 / Published: 14 January 2020
(This article belongs to the Special Issue Pollution Remediation and Management)
Adsorption in biomass has proven to be a cost-effective option for treatment of wastewater containing dyes and other pollutants, as it is a simple and low cost technique and does not require high initial investments. The present work aimed to study the adsorption of methylene blue dye (MB) using sugarcane bagasse (SCB). The biomass was characterized by scanning electron microscopy (SEM). Adsorption studies were conducted batchwise. Kinetics, adsorption isotherms, and thermodynamics were studied. The results showed that SCB presented a maximum adsorption capacity of 9.41 mg g−1 at 45 °C after 24 h of contact time. Adsorption kinetics data better fitted the pseudo-second order model, indicating a chemical process was involved. The Sips’s three-parameter isotherm model was better for adjusting the data obtained for the adsorption isotherms, indicating a heterogeneous adsorption process. The process showed to be endothermic, spontaneous, and feasible. Therefore, it was concluded that SCB presented as a potential biosorbent material for the treatment of MB-contaminated waters.
Keywords: adsorption; methylene blue; sugarcane bagasse; sustainable; wastewater adsorption; methylene blue; sugarcane bagasse; sustainable; wastewater
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Andrade Siqueira, T.C.; Zanette da Silva, I.; Rubio, A.J.; Bergamasco, R.; Gasparotto, F.; Aparecida de Souza Paccola, E.; Ueda Yamaguchi, N. Sugarcane Bagasse as an Efficient Biosorbent for Methylene Blue Removal: Kinetics, Isotherms and Thermodynamics. Int. J. Environ. Res. Public Health 2020, 17, 526.

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