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Abstract:

Development of activated carbons targeted at nitrate ion removal is investigated by chemical activation of sawdust from the invasive species Parkinsonia aculeata wood. Phosphoric acid and potassium hydroxide are comparatively used as activating agent. Its effect on main physico-chemical properties and on the effectiveness of the activated carbons in nitrate removal is compared with those determined for a commercial sample. Activated carbons developed with the base show the best effectiveness in nitrate removal, as determined from application of the Langmuir model to the experimental isotherms. The behavior is consistent with the development of surface basic groups and the more basic character of these carbons. Noticeable improvement in nitrate uptake for all the carbons is attained after treatment with a saturated urea solution, with removal levels of ∼80-90%, despite reductions in porous structures. Nitrate adsorption onto the urea-treated carbons is in direct correlation with their enhanced contents of elemental nitrogen. © 2012 Elsevier Ltd.

Registro:

Documento: Artículo
Título:Conversion of biomass from an invasive species into activated carbons for removal of nitrate from wastewater
Autor:Nunell, G.V.; Fernández, M.E.; Bonelli, P.R.; Cukierman, A.L.
Filiación:Programa de Investigacion y Desarrollo de Fuentes Alternativas de Materias Primas y Energia PINMATE, Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón de Industrias, Ciudad Universitaria, Intendente Güiraldes 2620, (C1428BGA) Ciudad Autónoma de Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, (C1033AAJ) Buenos Aires, Argentina
Cátedra de Farmacotecnia II, Departamento de Tecnología Farmacéutica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, (C1113AAD) Ciudad Autónoma de Buenos Aires, Argentina
Palabras clave:Activated carbon; Chemical activation; Nitrate pollution; Parkinsonia aculeata wood; Urea post-treated carbons; Activating agents; After-treatment; Commercial sample; Invasive species; Langmuir models; Nitrate ions; Nitrate pollution; Nitrate removal; Nitrate uptake; Parkinsonia aculeata; Physicochemical property; Porous structures; Urea solutions; Activated carbon; Activated carbon treatment; Chemical activation; Chemical properties; Metabolism; Nitrates; Phosphoric acid; Potassium hydroxide; Urea; Nitrogen removal; activated carbon; anion; biomass; hydroxide; inorganic acid; invasive species; isotherm; legume; nitrate; nitrogen; physicochemical property; pollutant removal; porous medium; potassium; urea; wastewater; wood
Año:2012
Volumen:44
Página de inicio:87
Página de fin:95
DOI: http://dx.doi.org/10.1016/j.biombioe.2012.05.001
Título revista:Biomass and Bioenergy
Título revista abreviado:Biomass Bioenergy
ISSN:09619534
CODEN:BMSBE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09619534_v44_n_p87_Nunell

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Citas:

---------- APA ----------
Nunell, G.V., Fernández, M.E., Bonelli, P.R. & Cukierman, A.L. (2012) . Conversion of biomass from an invasive species into activated carbons for removal of nitrate from wastewater. Biomass and Bioenergy, 44, 87-95.
http://dx.doi.org/10.1016/j.biombioe.2012.05.001
---------- CHICAGO ----------
Nunell, G.V., Fernández, M.E., Bonelli, P.R., Cukierman, A.L. "Conversion of biomass from an invasive species into activated carbons for removal of nitrate from wastewater" . Biomass and Bioenergy 44 (2012) : 87-95.
http://dx.doi.org/10.1016/j.biombioe.2012.05.001
---------- MLA ----------
Nunell, G.V., Fernández, M.E., Bonelli, P.R., Cukierman, A.L. "Conversion of biomass from an invasive species into activated carbons for removal of nitrate from wastewater" . Biomass and Bioenergy, vol. 44, 2012, pp. 87-95.
http://dx.doi.org/10.1016/j.biombioe.2012.05.001
---------- VANCOUVER ----------
Nunell, G.V., Fernández, M.E., Bonelli, P.R., Cukierman, A.L. Conversion of biomass from an invasive species into activated carbons for removal of nitrate from wastewater. Biomass Bioenergy. 2012;44:87-95.
http://dx.doi.org/10.1016/j.biombioe.2012.05.001