Nitrate uptake improvement by modified activated carbons developed from two species of pine cones

Activated carbons from two species of pine cones (Pinus canariensis and Cupressus sempervirens) were prepared by phosphoric acid activation and tested for the removal of nitrate ions from aqueous solution. To investigate the feasibility of improving their nitrate adsorption capacity, two different p...

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Autores principales:	Nunell, Gisel Vanesa, Fernández, María Emilia, Bonelli, Pablo R., Cukierman, Ana Lea
Publicado:	2015
Materias:	Modified activated carbons Nitrate adsorption Thermal treatment Urea treatment Activated carbon Adsorption isotherms Heat treatment Metabolism Nitrates Urea Adsorption capacities Nitrate adsorptions Nitrate removal Phosphoric acid activation Pinus canariensis Porous structures Adsorption activated carbon nitrate nitrogen phosphoric acid urea carbon nitric acid derivative adsorption aqueous solution Article chemical structure controlled study Cupressus Cupressus sempervirens heat treatment isotherm nitrate uptake pine waste water management metabolism Carbon Pinus
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219797_v440_n_p102_Nunell http://hdl.handle.net/20.500.12110/paper_00219797_v440_n_p102_Nunell
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00219797_v440_n_p102_Nunell
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spelling	paper:paper_00219797_v440_n_p102_Nunell2023-06-08T14:44:57Z Nitrate uptake improvement by modified activated carbons developed from two species of pine cones Nunell, Gisel Vanesa Fernández, María Emilia Bonelli, Pablo R. Cukierman, Ana Lea Modified activated carbons Nitrate adsorption Thermal treatment Urea treatment Activated carbon Adsorption isotherms Heat treatment Metabolism Nitrates Urea Adsorption capacities Modified activated carbons Nitrate adsorptions Nitrate removal Phosphoric acid activation Pinus canariensis Porous structures Urea treatment Adsorption activated carbon nitrate nitrogen phosphoric acid urea carbon nitric acid derivative adsorption aqueous solution Article chemical structure controlled study Cupressus Cupressus sempervirens heat treatment isotherm nitrate uptake pine Pinus canariensis waste water management metabolism pine Adsorption Carbon Nitrates Pinus Activated carbons from two species of pine cones (Pinus canariensis and Cupressus sempervirens) were prepared by phosphoric acid activation and tested for the removal of nitrate ions from aqueous solution. To investigate the feasibility of improving their nitrate adsorption capacity, two different post-treatments - a thermal treatment and a treatment with saturated urea solution - were also applied to the prepared activated carbons. Comparison of the treated and untreated activated carbons showed that both post-treatments improved the nitrate adsorption performance more than twice. The maximum adsorption capacity, as evaluated from determination of the adsorption isotherms for the P. canariensis based carbons, and their proper representation by the Langmuir model, demonstrated that the post-treatment with the urea solution led to activated carbons with increased nitrate removal effectiveness, even superior to other reported results. Enhancements in their adsorption capacity could be mainly ascribed to higher contents of nitrogen and basic functional groups, whereas porous structure of the activated carbons did not seem to play a key role in the nitrate uptake. © 2014 Elsevier Inc. Fil:Nunell, G.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fernandez, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bonelli, P.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cukierman, A.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219797_v440_n_p102_Nunell http://hdl.handle.net/20.500.12110/paper_00219797_v440_n_p102_Nunell
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Modified activated carbons Nitrate adsorption Thermal treatment Urea treatment Activated carbon Adsorption isotherms Heat treatment Metabolism Nitrates Urea Adsorption capacities Modified activated carbons Nitrate adsorptions Nitrate removal Phosphoric acid activation Pinus canariensis Porous structures Urea treatment Adsorption activated carbon nitrate nitrogen phosphoric acid urea carbon nitric acid derivative adsorption aqueous solution Article chemical structure controlled study Cupressus Cupressus sempervirens heat treatment isotherm nitrate uptake pine Pinus canariensis waste water management metabolism pine Adsorption Carbon Nitrates Pinus
spellingShingle	Modified activated carbons Nitrate adsorption Thermal treatment Urea treatment Activated carbon Adsorption isotherms Heat treatment Metabolism Nitrates Urea Adsorption capacities Modified activated carbons Nitrate adsorptions Nitrate removal Phosphoric acid activation Pinus canariensis Porous structures Urea treatment Adsorption activated carbon nitrate nitrogen phosphoric acid urea carbon nitric acid derivative adsorption aqueous solution Article chemical structure controlled study Cupressus Cupressus sempervirens heat treatment isotherm nitrate uptake pine Pinus canariensis waste water management metabolism pine Adsorption Carbon Nitrates Pinus Nunell, Gisel Vanesa Fernández, María Emilia Bonelli, Pablo R. Cukierman, Ana Lea Nitrate uptake improvement by modified activated carbons developed from two species of pine cones
topic_facet	Modified activated carbons Nitrate adsorption Thermal treatment Urea treatment Activated carbon Adsorption isotherms Heat treatment Metabolism Nitrates Urea Adsorption capacities Modified activated carbons Nitrate adsorptions Nitrate removal Phosphoric acid activation Pinus canariensis Porous structures Urea treatment Adsorption activated carbon nitrate nitrogen phosphoric acid urea carbon nitric acid derivative adsorption aqueous solution Article chemical structure controlled study Cupressus Cupressus sempervirens heat treatment isotherm nitrate uptake pine Pinus canariensis waste water management metabolism pine Adsorption Carbon Nitrates Pinus
description	Activated carbons from two species of pine cones (Pinus canariensis and Cupressus sempervirens) were prepared by phosphoric acid activation and tested for the removal of nitrate ions from aqueous solution. To investigate the feasibility of improving their nitrate adsorption capacity, two different post-treatments - a thermal treatment and a treatment with saturated urea solution - were also applied to the prepared activated carbons. Comparison of the treated and untreated activated carbons showed that both post-treatments improved the nitrate adsorption performance more than twice. The maximum adsorption capacity, as evaluated from determination of the adsorption isotherms for the P. canariensis based carbons, and their proper representation by the Langmuir model, demonstrated that the post-treatment with the urea solution led to activated carbons with increased nitrate removal effectiveness, even superior to other reported results. Enhancements in their adsorption capacity could be mainly ascribed to higher contents of nitrogen and basic functional groups, whereas porous structure of the activated carbons did not seem to play a key role in the nitrate uptake. © 2014 Elsevier Inc.
author	Nunell, Gisel Vanesa Fernández, María Emilia Bonelli, Pablo R. Cukierman, Ana Lea
author_facet	Nunell, Gisel Vanesa Fernández, María Emilia Bonelli, Pablo R. Cukierman, Ana Lea
author_sort	Nunell, Gisel Vanesa
title	Nitrate uptake improvement by modified activated carbons developed from two species of pine cones
title_short	Nitrate uptake improvement by modified activated carbons developed from two species of pine cones
title_full	Nitrate uptake improvement by modified activated carbons developed from two species of pine cones
title_fullStr	Nitrate uptake improvement by modified activated carbons developed from two species of pine cones
title_full_unstemmed	Nitrate uptake improvement by modified activated carbons developed from two species of pine cones
title_sort	nitrate uptake improvement by modified activated carbons developed from two species of pine cones
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219797_v440_n_p102_Nunell http://hdl.handle.net/20.500.12110/paper_00219797_v440_n_p102_Nunell
work_keys_str_mv	AT nunellgiselvanesa nitrateuptakeimprovementbymodifiedactivatedcarbonsdevelopedfromtwospeciesofpinecones AT fernandezmariaemilia nitrateuptakeimprovementbymodifiedactivatedcarbonsdevelopedfromtwospeciesofpinecones AT bonellipablor nitrateuptakeimprovementbymodifiedactivatedcarbonsdevelopedfromtwospeciesofpinecones AT cukiermananalea nitrateuptakeimprovementbymodifiedactivatedcarbonsdevelopedfromtwospeciesofpinecones
_version_	1768543642311458816

Nitrate uptake improvement by modified activated carbons developed from two species of pine cones

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