Chemical modification of cellulose by acylation: Application to adsorption of methylene blue

Cellulose was modified under mild conditions in order to increase its capability to trap pollutants. Nicotinoyl chloride hydrochloride (NCHC), with its pyridine ring able to adsorb cations, was grafted on the substrate. This grafting has been monitored by infrared spectroscopy and elemental analysis...

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Autores principales:	Bouhdadi,R, Benhadi,S, Molina,S, George,B, El Moussaouiti,M, Merlin,A
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2011
Materias:	Cellulose dye adsorption isotherms kinetics modeling
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000100009
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spelling	oai:scielo:S0718-221X20110001000092011-05-30Chemical modification of cellulose by acylation: Application to adsorption of methylene blueBouhdadi,RBenhadi,SMolina,SGeorge,BEl Moussaouiti,MMerlin,A Cellulose dye adsorption isotherms kinetics modeling Cellulose was modified under mild conditions in order to increase its capability to trap pollutants. Nicotinoyl chloride hydrochloride (NCHC), with its pyridine ring able to adsorb cations, was grafted on the substrate. This grafting has been monitored by infrared spectroscopy and elemental analysis. We have studied the adsorption of Methylene Blue (MB) onto grafted and unmodified cellulose. It was observed that grafting increases three times the retention capacity of cellulose and the kinetics of adsorption is perfectly represented by a pseudo second order model. The adsorption is well described by a Langmuir-type isotherm showing a homogeneous adsorption phenomenon through the formation of a monolayer. Besides the reaction is spontaneous and exothermic, suggesting the possibility of recycling the substrate by desorbing the dye at elevated temperature.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.13 n.1 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000100009en10.4067/S0718-221X2011000100009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Cellulose dye adsorption isotherms kinetics modeling
spellingShingle	Cellulose dye adsorption isotherms kinetics modeling Bouhdadi,R Benhadi,S Molina,S George,B El Moussaouiti,M Merlin,A Chemical modification of cellulose by acylation: Application to adsorption of methylene blue
description	Cellulose was modified under mild conditions in order to increase its capability to trap pollutants. Nicotinoyl chloride hydrochloride (NCHC), with its pyridine ring able to adsorb cations, was grafted on the substrate. This grafting has been monitored by infrared spectroscopy and elemental analysis. We have studied the adsorption of Methylene Blue (MB) onto grafted and unmodified cellulose. It was observed that grafting increases three times the retention capacity of cellulose and the kinetics of adsorption is perfectly represented by a pseudo second order model. The adsorption is well described by a Langmuir-type isotherm showing a homogeneous adsorption phenomenon through the formation of a monolayer. Besides the reaction is spontaneous and exothermic, suggesting the possibility of recycling the substrate by desorbing the dye at elevated temperature.
author	Bouhdadi,R Benhadi,S Molina,S George,B El Moussaouiti,M Merlin,A
author_facet	Bouhdadi,R Benhadi,S Molina,S George,B El Moussaouiti,M Merlin,A
author_sort	Bouhdadi,R
title	Chemical modification of cellulose by acylation: Application to adsorption of methylene blue
title_short	Chemical modification of cellulose by acylation: Application to adsorption of methylene blue
title_full	Chemical modification of cellulose by acylation: Application to adsorption of methylene blue
title_fullStr	Chemical modification of cellulose by acylation: Application to adsorption of methylene blue
title_full_unstemmed	Chemical modification of cellulose by acylation: Application to adsorption of methylene blue
title_sort	chemical modification of cellulose by acylation: application to adsorption of methylene blue
publisher	Universidad del Bío-Bío
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000100009
work_keys_str_mv	AT bouhdadir chemicalmodificationofcellulosebyacylationapplicationtoadsorptionofmethyleneblue AT benhadis chemicalmodificationofcellulosebyacylationapplicationtoadsorptionofmethyleneblue AT molinas chemicalmodificationofcellulosebyacylationapplicationtoadsorptionofmethyleneblue AT georgeb chemicalmodificationofcellulosebyacylationapplicationtoadsorptionofmethyleneblue AT elmoussaouitim chemicalmodificationofcellulosebyacylationapplicationtoadsorptionofmethyleneblue AT merlina chemicalmodificationofcellulosebyacylationapplicationtoadsorptionofmethyleneblue
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Chemical modification of cellulose by acylation: Application to adsorption of methylene blue

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