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dc.contributor.authorBernal, Marta 
dc.contributor.authorRuiz Pérez, María Olga 
dc.contributor.authorGeanta, Ramona Mihaela 
dc.contributor.authorBenito Moreno, José Manuel 
dc.contributor.authorEscudero Barbero, Isabel 
dc.date.accessioned2016-12-02T12:45:09Z
dc.date.available2018-01-01T03:45:06Z
dc.date.issued2016-01
dc.identifier.urihttp://hdl.handle.net/10259/4291
dc.description.abstractThe feasibility of an activated charcoal/ultrafiltration process for the decolouration of beet molasses, and subsequent regeneration of the exhausted charcoal by thermal and chemical methods, has been examined. Several activated charcoals were assayed prior to the selection of Norit powdered activated charcoal (NPAC). The affinity of NPAC for the adsorption of dark colour compounds was studied at 25 C. A colour reduction of over 98% was achieved at equilibrium using an NPAC concentration of 5 g/L from the beet molasses at pH 3, with no betaine or sucrose co-adsorptions. Crossflow ultrafiltration experiments with NPAC were performed using a 100 kDa TiO2 tubular ceramic membrane, in order to select the optimal operating conditions. Experiments with several ultrafiltration stages for the decolouration of beet molasses, and subsequent regeneration of the exhausted NPAC with sodium hydroxide solutions, were also performed under the conditions identified previously. A high colour reduction in the molasses of over 96.5%, with no adsorption of sucrose, betaine, citric acid or lactic acid, was achieved in the first decolouration stage at pH 3, with an initial NPAC concentration of 5 g/L, a transmembrane pressure of 100 kPa and a feed flowrate of 4.24 L/h. A good NPAC regeneration was obtained, with a loss of its colour removal capacity lower than 10%.en
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO, Spain) through project CTQ2011-25239 and from the Junta de Castilla y León through project BU175A11-2en
dc.format.mimetypeapplication/pdf
dc.language.isoenges
dc.publisherElsevieren
dc.relation.ispartofChemical Engineering Journal Volume 283, 1 January 2016, Pages 313–322en
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.otherChemical engineeringen
dc.subject.otherIngeniería químicaes
dc.titleColour removal from beet molasses by ultrafiltration with activated charcoalen
dc.typeinfo:eu-repo/semantics/article
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.cej.2015.07.047
dc.type.hasVersioninfo:eu-repo/semantics/acceptedVersionen


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