Artículo
Conversion of biomass from an invasive species into activated carbons for removal of nitrate from wastewater
Fecha de publicación:
06/2012
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Biomass and Bioenergy
ISSN:
0961-9534
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
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 w80e90%, despite reductions in porous structures. Nitrate adsorption onto the urea-treated carbons is in direct correlation with their enhanced contents of elemental nitrogen.
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Articulos(OCA CIUDAD UNIVERSITARIA)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Citación
Nunell, Gisel Vanesa; Fernandez, Maria Emilia; Bonelli, Pablo Ricardo; Cukierman, Ana Lea; Conversion of biomass from an invasive species into activated carbons for removal of nitrate from wastewater; Pergamon-Elsevier Science Ltd; Biomass and Bioenergy; 44; 6-2012; 87-95
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