A PEACH STONE ACTIVATED CARBON CHEMICALLY MODIFIED TO ADSORB AQUEOUS AMMONIA

The oxidation of an activated carbon prepared from peach stones as well as the adsorption of aqueous ammonia using untreated and modified carbons is described here in. Boehm method in conjunction with temperature-programmed desorption (TPD) were mainly used to assess the chemical changes. These meth...

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Autores principales:	Soto-Garrido,G., Aguilar,Croswel, García,Rafael, Arriagada,Renán
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2003
Materias:	activated carbon oxidation adsorption Boehm method ammonia
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072003000300013
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spelling	oai:scielo:S0717-970720030003000132004-01-30A PEACH STONE ACTIVATED CARBON CHEMICALLY MODIFIED TO ADSORB AQUEOUS AMMONIASoto-Garrido,G.Aguilar,CroswelGarcía,RafaelArriagada,Renán activated carbon oxidation adsorption Boehm method ammonia The oxidation of an activated carbon prepared from peach stones as well as the adsorption of aqueous ammonia using untreated and modified carbons is described here in. Boehm method in conjunction with temperature-programmed desorption (TPD) were mainly used to assess the chemical changes. These methods were complemented by chemical analysis, pH measurements and FT-IR spectra. Textural characterization was obtained from CO2 and N2 adsorption. Chemical modifications performed under the same experimental conditions with aqueous solutions of HNO3 and H2O2 indicated evidences that carboxylic acids like group formation is enhanced by short periods of time of HNO3 treatment at temperatures about 353 K followed by a mild oven-dry process in atmospheric air. The activated carbon modified under such conditions resulted to be the best ammonia adsorbentinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.48 n.3 20032003-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072003000300013en10.4067/S0717-97072003000300013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	activated carbon oxidation adsorption Boehm method ammonia
spellingShingle	activated carbon oxidation adsorption Boehm method ammonia Soto-Garrido,G. Aguilar,Croswel García,Rafael Arriagada,Renán A PEACH STONE ACTIVATED CARBON CHEMICALLY MODIFIED TO ADSORB AQUEOUS AMMONIA
description	The oxidation of an activated carbon prepared from peach stones as well as the adsorption of aqueous ammonia using untreated and modified carbons is described here in. Boehm method in conjunction with temperature-programmed desorption (TPD) were mainly used to assess the chemical changes. These methods were complemented by chemical analysis, pH measurements and FT-IR spectra. Textural characterization was obtained from CO2 and N2 adsorption. Chemical modifications performed under the same experimental conditions with aqueous solutions of HNO3 and H2O2 indicated evidences that carboxylic acids like group formation is enhanced by short periods of time of HNO3 treatment at temperatures about 353 K followed by a mild oven-dry process in atmospheric air. The activated carbon modified under such conditions resulted to be the best ammonia adsorbent
author	Soto-Garrido,G. Aguilar,Croswel García,Rafael Arriagada,Renán
author_facet	Soto-Garrido,G. Aguilar,Croswel García,Rafael Arriagada,Renán
author_sort	Soto-Garrido,G.
title	A PEACH STONE ACTIVATED CARBON CHEMICALLY MODIFIED TO ADSORB AQUEOUS AMMONIA
title_short	A PEACH STONE ACTIVATED CARBON CHEMICALLY MODIFIED TO ADSORB AQUEOUS AMMONIA
title_full	A PEACH STONE ACTIVATED CARBON CHEMICALLY MODIFIED TO ADSORB AQUEOUS AMMONIA
title_fullStr	A PEACH STONE ACTIVATED CARBON CHEMICALLY MODIFIED TO ADSORB AQUEOUS AMMONIA
title_full_unstemmed	A PEACH STONE ACTIVATED CARBON CHEMICALLY MODIFIED TO ADSORB AQUEOUS AMMONIA
title_sort	peach stone activated carbon chemically modified to adsorb aqueous ammonia
publisher	Sociedad Chilena de Química
publishDate	2003
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072003000300013
work_keys_str_mv	AT sotogarridog apeachstoneactivatedcarbonchemicallymodifiedtoadsorbaqueousammonia AT aguilarcroswel apeachstoneactivatedcarbonchemicallymodifiedtoadsorbaqueousammonia AT garciarafael apeachstoneactivatedcarbonchemicallymodifiedtoadsorbaqueousammonia AT arriagadarenan apeachstoneactivatedcarbonchemicallymodifiedtoadsorbaqueousammonia AT sotogarridog peachstoneactivatedcarbonchemicallymodifiedtoadsorbaqueousammonia AT aguilarcroswel peachstoneactivatedcarbonchemicallymodifiedtoadsorbaqueousammonia AT garciarafael peachstoneactivatedcarbonchemicallymodifiedtoadsorbaqueousammonia AT arriagadarenan peachstoneactivatedcarbonchemicallymodifiedtoadsorbaqueousammonia
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A PEACH STONE ACTIVATED CARBON CHEMICALLY MODIFIED TO ADSORB AQUEOUS AMMONIA

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