Application of tobacco hairy roots for the removal of malachite green from aqueous solutions: Experimental design, kinetic, equilibrium, and thermodynamic studies

Tobacco hairy roots (THR) were used to evaluate its potential for the biosorption and removal of malachite green (MG) from aqueous solutions. A 32 full factorial design was applied to study the effects of pH and THR concentration on the biosorption capacity. Under the optimal conditions (pH of 7.0 a...

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Autores principales: Escudero, L.B., Agostini, E., Dotto, G.L.
Formato: JOUR
Materias:
Biosorption
dye removal
hairy roots
kinetics
malachite green
thermodynamics
Carbonate minerals
Dyes
Enzyme kinetics
Kinetics
Thermodynamics
Tobacco
Wastewater treatment
Biosorption capacity
Dye removal
Full factorial design
Hairy roots
Malachite green
Optimal conditions
Pseudo-second order model
Thermodynamic studies
Solutions
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00986445_v205_n1_p122_Escudero
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00986445_v205_n1_p122_Escudero2023-10-03T14:57:01Z Application of tobacco hairy roots for the removal of malachite green from aqueous solutions: Experimental design, kinetic, equilibrium, and thermodynamic studies Escudero, L.B. Agostini, E. Dotto, G.L. Biosorption dye removal hairy roots kinetics malachite green thermodynamics Biosorption Carbonate minerals Dyes Enzyme kinetics Kinetics Thermodynamics Tobacco Wastewater treatment Biosorption capacity Dye removal Full factorial design Hairy roots Malachite green Optimal conditions Pseudo-second order model Thermodynamic studies Solutions Tobacco hairy roots (THR) were used to evaluate its potential for the biosorption and removal of malachite green (MG) from aqueous solutions. A 32 full factorial design was applied to study the effects of pH and THR concentration on the biosorption capacity. Under the optimal conditions (pH of 7.0 and THR concentration of 1 g L−1), dye removal efficiency was around 92%. Experimental data obtained from kinetic studies demonstrated good concordance with the pseudo-second-order model. Equilibrium studies were developed and the data were evaluated by Langmuir, Freundlich, and Sips models, being the Sips model the most adequate (maximum biosorption capacity of 277.2 mg g−1). Thermodynamically, the biosorption of MG on THR proved to be endothermic, spontaneous, and favorable. Desorption was feasible under acidic conditions and the biosorbent could be reused three times. THR was tested in simulated effluent and the removal percentage was 87%, demonstrating that this material is a promising biosorbent which can be used to treat colored wastewaters. © 2018 Taylor & Francis. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00986445_v205_n1_p122_Escudero
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Biosorption
dye removal
hairy roots
kinetics
malachite green
thermodynamics
Biosorption
Carbonate minerals
Dyes
Enzyme kinetics
Kinetics
Thermodynamics
Tobacco
Wastewater treatment
Biosorption capacity
Dye removal
Full factorial design
Hairy roots
Malachite green
Optimal conditions
Pseudo-second order model
Thermodynamic studies
Solutions
spellingShingle Biosorption
dye removal
hairy roots
kinetics
malachite green
thermodynamics
Biosorption
Carbonate minerals
Dyes
Enzyme kinetics
Kinetics
Thermodynamics
Tobacco
Wastewater treatment
Biosorption capacity
Dye removal
Full factorial design
Hairy roots
Malachite green
Optimal conditions
Pseudo-second order model
Thermodynamic studies
Solutions
Escudero, L.B.
Agostini, E.
Dotto, G.L.
Application of tobacco hairy roots for the removal of malachite green from aqueous solutions: Experimental design, kinetic, equilibrium, and thermodynamic studies
topic_facet Biosorption
dye removal
hairy roots
kinetics
malachite green
thermodynamics
Biosorption
Carbonate minerals
Dyes
Enzyme kinetics
Kinetics
Thermodynamics
Tobacco
Wastewater treatment
Biosorption capacity
Dye removal
Full factorial design
Hairy roots
Malachite green
Optimal conditions
Pseudo-second order model
Thermodynamic studies
Solutions
description Tobacco hairy roots (THR) were used to evaluate its potential for the biosorption and removal of malachite green (MG) from aqueous solutions. A 32 full factorial design was applied to study the effects of pH and THR concentration on the biosorption capacity. Under the optimal conditions (pH of 7.0 and THR concentration of 1 g L−1), dye removal efficiency was around 92%. Experimental data obtained from kinetic studies demonstrated good concordance with the pseudo-second-order model. Equilibrium studies were developed and the data were evaluated by Langmuir, Freundlich, and Sips models, being the Sips model the most adequate (maximum biosorption capacity of 277.2 mg g−1). Thermodynamically, the biosorption of MG on THR proved to be endothermic, spontaneous, and favorable. Desorption was feasible under acidic conditions and the biosorbent could be reused three times. THR was tested in simulated effluent and the removal percentage was 87%, demonstrating that this material is a promising biosorbent which can be used to treat colored wastewaters. © 2018 Taylor & Francis.
format JOUR
author Escudero, L.B.
Agostini, E.
Dotto, G.L.
author_facet Escudero, L.B.
Agostini, E.
Dotto, G.L.
author_sort Escudero, L.B.
title Application of tobacco hairy roots for the removal of malachite green from aqueous solutions: Experimental design, kinetic, equilibrium, and thermodynamic studies
title_short Application of tobacco hairy roots for the removal of malachite green from aqueous solutions: Experimental design, kinetic, equilibrium, and thermodynamic studies
title_full Application of tobacco hairy roots for the removal of malachite green from aqueous solutions: Experimental design, kinetic, equilibrium, and thermodynamic studies
title_fullStr Application of tobacco hairy roots for the removal of malachite green from aqueous solutions: Experimental design, kinetic, equilibrium, and thermodynamic studies
title_full_unstemmed Application of tobacco hairy roots for the removal of malachite green from aqueous solutions: Experimental design, kinetic, equilibrium, and thermodynamic studies
title_sort application of tobacco hairy roots for the removal of malachite green from aqueous solutions: experimental design, kinetic, equilibrium, and thermodynamic studies
url http://hdl.handle.net/20.500.12110/paper_00986445_v205_n1_p122_Escudero
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AT agostinie applicationoftobaccohairyrootsfortheremovalofmalachitegreenfromaqueoussolutionsexperimentaldesignkineticequilibriumandthermodynamicstudies
AT dottogl applicationoftobaccohairyrootsfortheremovalofmalachitegreenfromaqueoussolutionsexperimentaldesignkineticequilibriumandthermodynamicstudies
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