Activated carbon from grape seeds upon chemical activation with phosphoric acid: Application to the adsorption of diuron from water
Entity
UAM. Departamento de Química Física AplicadaPublisher
Elsevier B.V.Date
2012-09-01Citation
10.1016/j.cej.2012.07.053
Chemical Engineering Journal 203 (2012): 348-346
ISSN
1385-8947DOI
10.1016/j.cej.2012.07.053Funded by
We greatly appreciate financial support from the Spanish MCYT (CTQ2009-09983 and CSD2006-44) and CAM (REMTAVARES S-2009/AMB-1588). M. Al Bahri thanks to the Spanish MICINN a research grant (CTQ2006-13512)Project
Gobierno de España. CTQ2009-09983; Gobierno de España. CSD2006-44; Comunidad de Madrid. S-2009/AMB-1588/REMTAVARES; Gobierno de España. CTQ2006-13512Editor's Version
http://dx.doi.org/10.1016/j.cej.2012.07.053Subjects
Adsorption; Diuron; Granular activated carbon; Grape seeds; Phosphoric acid; QuímicaRights
© 2012 Elsevier B.V.Abstract
The preparation of activated carbon from grape seeds was studied by chemical activation with phosphoric acid. Grape seeds were pretreated with sulfuric acid to improve wettability and impregnated at different grape seed to phosphoric acid ratios (1:1-1:4). The impregnated grape seeds were carbonized in a static horizontal furnace at temperatures between 350 and 550°C. Microporous activated carbons with some contribution of mesoporosity were obtained. The best results in terms of surface area (1139m2/g) and mesopore volume (0.24cm3/g) development were observed for a grape seeds to phosphoric acid ratio of 1:3 and a carbonization temperature of 500°C. The activated carbon prepared shows granular morphology and an egg shell structure that favors application in liquid phase. The activated carbon was tested in the adsorption of diuron from aqueous phase. The adsorption rate was measured within the temperature range of 15-45°C. First and second order rate equations and intraparticle diffusion model were checked to fit the kinetic data
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Google Scholar:Al Bahri, M
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Calvo, Luisa
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Gilarranz Redondo, Miguel Ángel
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Rodríguez Jiménez, Juan José
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