Development and characterization of microwave-assisted activated carbons from Parkinsonea aculeata wood

Activated carbons from invasive Parkinsonia aculeata wood sawdust were developed by microwave assisted H3PO4 acid activation varying the radiation time (2–10 min). Their main physicochemical characteristics were determined, and compared with those of a sample previously obtained by conventional heat...

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Autores principales: Nunell, G.V., Fernandez, M.E., Bonelli, P.R., Cukierman, A.L.
Formato: JOUR
Materias:
Activated carbon
H3PO4 acid activation
Microwave assistance
Phenol adsorption
Adsorption
Chemical activation
Heating
Microwaves
Phenols
Acid activation
Adsorption capacities
Conventional heating
Impregnation ratios
Microwave energies
Parkinsonia aculeata
Physicochemical characteristics
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09295607_v22_n3_p347_Nunell
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_09295607_v22_n3_p347_Nunell2023-10-03T15:47:35Z Development and characterization of microwave-assisted activated carbons from Parkinsonea aculeata wood Nunell, G.V. Fernandez, M.E. Bonelli, P.R. Cukierman, A.L. Activated carbon H3PO4 acid activation Microwave assistance Phenol adsorption Adsorption Chemical activation Heating Microwaves Phenols Acid activation Adsorption capacities Conventional heating Impregnation ratios Microwave energies Parkinsonia aculeata Phenol adsorption Physicochemical characteristics Activated carbon Activated carbons from invasive Parkinsonia aculeata wood sawdust were developed by microwave assisted H3PO4 acid activation varying the radiation time (2–10 min). Their main physicochemical characteristics were determined, and compared with those of a sample previously obtained by conventional heating using the same precursor, chemical agent, and impregnation ratio. The activated carbons developed for radiation times of 5 and 10 min showed higher BET surface areas (~1300 m2/g) and total pore volume (1 cm3/g) than those obtained at 2 min (~710 m2/g) or by conventional heating (~970 m2/g). Microwave assisted activation also led to activated carbons with higher total amounts of acidic oxygen and basic functionalities in comparison with the sample arising from conventional heating. Phenol adsorption capacity for all the samples was also evaluated from determination of the adsorption isotherms and their proper description by the Freundlich model. The adsorption capacity for the activated carbons obtained at 5 and 10 min was almost twice that measured for the samples prepared at 2 min and by conventional heating, in agreement with the higher BET surface areas characterizing the former. Compared with conventional heating, the process assistance by microwave energy not only reduced operation time, but also improved the characteristics of the resulting activated carbons. © 2016, Springer Science+Business Media New York. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09295607_v22_n3_p347_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 Activated carbon
H3PO4 acid activation
Microwave assistance
Phenol adsorption
Adsorption
Chemical activation
Heating
Microwaves
Phenols
Acid activation
Adsorption capacities
Conventional heating
Impregnation ratios
Microwave energies
Parkinsonia aculeata
Phenol adsorption
Physicochemical characteristics
Activated carbon
spellingShingle Activated carbon
H3PO4 acid activation
Microwave assistance
Phenol adsorption
Adsorption
Chemical activation
Heating
Microwaves
Phenols
Acid activation
Adsorption capacities
Conventional heating
Impregnation ratios
Microwave energies
Parkinsonia aculeata
Phenol adsorption
Physicochemical characteristics
Activated carbon
Nunell, G.V.
Fernandez, M.E.
Bonelli, P.R.
Cukierman, A.L.
Development and characterization of microwave-assisted activated carbons from Parkinsonea aculeata wood
topic_facet Activated carbon
H3PO4 acid activation
Microwave assistance
Phenol adsorption
Adsorption
Chemical activation
Heating
Microwaves
Phenols
Acid activation
Adsorption capacities
Conventional heating
Impregnation ratios
Microwave energies
Parkinsonia aculeata
Phenol adsorption
Physicochemical characteristics
Activated carbon
description Activated carbons from invasive Parkinsonia aculeata wood sawdust were developed by microwave assisted H3PO4 acid activation varying the radiation time (2–10 min). Their main physicochemical characteristics were determined, and compared with those of a sample previously obtained by conventional heating using the same precursor, chemical agent, and impregnation ratio. The activated carbons developed for radiation times of 5 and 10 min showed higher BET surface areas (~1300 m2/g) and total pore volume (1 cm3/g) than those obtained at 2 min (~710 m2/g) or by conventional heating (~970 m2/g). Microwave assisted activation also led to activated carbons with higher total amounts of acidic oxygen and basic functionalities in comparison with the sample arising from conventional heating. Phenol adsorption capacity for all the samples was also evaluated from determination of the adsorption isotherms and their proper description by the Freundlich model. The adsorption capacity for the activated carbons obtained at 5 and 10 min was almost twice that measured for the samples prepared at 2 min and by conventional heating, in agreement with the higher BET surface areas characterizing the former. Compared with conventional heating, the process assistance by microwave energy not only reduced operation time, but also improved the characteristics of the resulting activated carbons. © 2016, Springer Science+Business Media New York.
format JOUR
author Nunell, G.V.
Fernandez, M.E.
Bonelli, P.R.
Cukierman, A.L.
author_facet Nunell, G.V.
Fernandez, M.E.
Bonelli, P.R.
Cukierman, A.L.
author_sort Nunell, G.V.
title Development and characterization of microwave-assisted activated carbons from Parkinsonea aculeata wood
title_short Development and characterization of microwave-assisted activated carbons from Parkinsonea aculeata wood
title_full Development and characterization of microwave-assisted activated carbons from Parkinsonea aculeata wood
title_fullStr Development and characterization of microwave-assisted activated carbons from Parkinsonea aculeata wood
title_full_unstemmed Development and characterization of microwave-assisted activated carbons from Parkinsonea aculeata wood
title_sort development and characterization of microwave-assisted activated carbons from parkinsonea aculeata wood
url http://hdl.handle.net/20.500.12110/paper_09295607_v22_n3_p347_Nunell
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