Characterization of two cellulosic waste materials (orange and almond peels) and their use for the removal of methylene blue from aqueous solutions

The ability of orange peels (OP) and almond peels (AP) as adsorbents for the removal of a dyestuff, namely methylene blue (MB) from aqueous solutions has been studied. After their characterization by different techniques (elemental analysis, biochemical analysis, IR spectroscopy, thermogravimetric a...

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Autores principales:	Boumediene¹,M, Benaïssa,H, George,B, Molina,St, Merlin,A
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2015
Materias:	Waste treatment orange and almond peels adsorption isotherms kinetics modelling
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2015000100009
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spelling	oai:scielo:S0718-221X20150001000092015-06-17Characterization of two cellulosic waste materials (orange and almond peels) and their use for the removal of methylene blue from aqueous solutionsBoumediene¹,MBenaïssa,HGeorge,BMolina,StMerlin,A Waste treatment orange and almond peels adsorption isotherms kinetics modelling The ability of orange peels (OP) and almond peels (AP) as adsorbents for the removal of a dyestuff, namely methylene blue (MB) from aqueous solutions has been studied. After their characterization by different techniques (elemental analysis, biochemical analysis, IR spectroscopy, thermogravimetric analysis, scanning electron microscopy, mercury porosimetry), adsorption kinetics of the dye have been investigated using common kinetic models cited in the literature: first order and pseudo-second order. The correlation coefficient has showed that the pseudo-second order kinetic equation best describes the adsorption kinetics for the tested materials. The experimental equilibrium data have been analyzed using linearized forms of Langmuir and Freundlich isotherms. The Langmuir isotherm was found to provide the best theoretical correlation of the experimental data whatever the biosorbents tested. Using the equilibrium coefficients obtained at different temperatures, various thermodynamic parameters such as ∆G°, ∆H°, ∆S° have been calculated. The thermodynamics of MB/OP and MB/AP systems indicated spontaneous and endothermic process. It was concluded that an increase in temperature results in a higher MB loading per unit weight of OP or AP.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.17 n.1 20152015-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2015000100009en10.4067/S0718-221X2015005000008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Waste treatment orange and almond peels adsorption isotherms kinetics modelling
spellingShingle	Waste treatment orange and almond peels adsorption isotherms kinetics modelling Boumediene¹,M Benaïssa,H George,B Molina,St Merlin,A Characterization of two cellulosic waste materials (orange and almond peels) and their use for the removal of methylene blue from aqueous solutions
description	The ability of orange peels (OP) and almond peels (AP) as adsorbents for the removal of a dyestuff, namely methylene blue (MB) from aqueous solutions has been studied. After their characterization by different techniques (elemental analysis, biochemical analysis, IR spectroscopy, thermogravimetric analysis, scanning electron microscopy, mercury porosimetry), adsorption kinetics of the dye have been investigated using common kinetic models cited in the literature: first order and pseudo-second order. The correlation coefficient has showed that the pseudo-second order kinetic equation best describes the adsorption kinetics for the tested materials. The experimental equilibrium data have been analyzed using linearized forms of Langmuir and Freundlich isotherms. The Langmuir isotherm was found to provide the best theoretical correlation of the experimental data whatever the biosorbents tested. Using the equilibrium coefficients obtained at different temperatures, various thermodynamic parameters such as ∆G°, ∆H°, ∆S° have been calculated. The thermodynamics of MB/OP and MB/AP systems indicated spontaneous and endothermic process. It was concluded that an increase in temperature results in a higher MB loading per unit weight of OP or AP.
author	Boumediene¹,M Benaïssa,H George,B Molina,St Merlin,A
author_facet	Boumediene¹,M Benaïssa,H George,B Molina,St Merlin,A
author_sort	Boumediene¹,M
title	Characterization of two cellulosic waste materials (orange and almond peels) and their use for the removal of methylene blue from aqueous solutions
title_short	Characterization of two cellulosic waste materials (orange and almond peels) and their use for the removal of methylene blue from aqueous solutions
title_full	Characterization of two cellulosic waste materials (orange and almond peels) and their use for the removal of methylene blue from aqueous solutions
title_fullStr	Characterization of two cellulosic waste materials (orange and almond peels) and their use for the removal of methylene blue from aqueous solutions
title_full_unstemmed	Characterization of two cellulosic waste materials (orange and almond peels) and their use for the removal of methylene blue from aqueous solutions
title_sort	characterization of two cellulosic waste materials (orange and almond peels) and their use for the removal of methylene blue from aqueous solutions
publisher	Universidad del Bío-Bío
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2015000100009
work_keys_str_mv	AT boumediene1m characterizationoftwocellulosicwastematerialsorangeandalmondpeelsandtheirusefortheremovalofmethylenebluefromaqueoussolutions AT benaissah characterizationoftwocellulosicwastematerialsorangeandalmondpeelsandtheirusefortheremovalofmethylenebluefromaqueoussolutions AT georgeb characterizationoftwocellulosicwastematerialsorangeandalmondpeelsandtheirusefortheremovalofmethylenebluefromaqueoussolutions AT molinast characterizationoftwocellulosicwastematerialsorangeandalmondpeelsandtheirusefortheremovalofmethylenebluefromaqueoussolutions AT merlina characterizationoftwocellulosicwastematerialsorangeandalmondpeelsandtheirusefortheremovalofmethylenebluefromaqueoussolutions
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Characterization of two cellulosic waste materials (orange and almond peels) and their use for the removal of methylene blue from aqueous solutions

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