Publication:
Flocculation efficiency of chitosans for papermaking applications

dc.contributor.authorNicu, Raluca
dc.contributor.authorBobu, Elena
dc.contributor.authorMiranda Carreño, Rubén
dc.contributor.authorBlanco Suárez, Ángeles
dc.date.accessioned2023-06-20T03:43:19Z
dc.date.available2023-06-20T03:43:19Z
dc.date.issued2013
dc.description.abstractBio-polymers have a large interest as environment-friendly alternatives to synthetic additives in papermaking. In this work, the behavior of three chitosans with different molecular weights and cationic charges were investigated as flocculation additives in papermaking on two systems: calcium carbonate (GCC) and pulp/GCC suspension. Comparison was made with two traditional cationic polymers used in wet end chemistry (poly-diallyldimethyl-ammonium chloride (PDADMAC) and poly-ethylene imine (PEI)). Flocculation efficiency was evaluated by flocculation parameters (mean floc size and number of counts) and by floc behavior under shear conditions, using a focused beam reflectance measurement (FBRM) technique. Results indicated different behaviors between the three chitosans when they were used for the flocculation of GCC and pulp/GCC suspensions. Chitosans were found to be more efficient over PDADMAC and PEI for flocculating small particles of the GCC suspension, but less efficient for increasing floc sizes, regardless of their MW or CCD. Flocculation parameters for pulp/GCC suspensions suggested the flocculation behavior of chitosan was close to that of PEI, but chitosan had higher efficiency and affinity towards cellulose fibers
dc.description.refereedTRUE
dc.description.sponsorshipComunidad de Madrid
dc.description.sponsorshipFondo Social Europeo
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/26409
dc.identifier.issn1930-2126
dc.identifier.officialurlhttp://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_08_1_Nicu_768_Flocculation_Efficiency_Chitosan
dc.identifier.urihttps://hdl.handle.net/20.500.14352/44318
dc.issue.number1
dc.journal.titleBioresources
dc.language.isoeng
dc.page.final784
dc.page.initial768
dc.publisherNC State University
dc.relation.projectIDPROLIPAPEL II-CM (S-2009AMB-1480) - Comunidad de Madrid
dc.relation.projectIDPERFORM-ERA (ID-57649)
dc.rights.accessRightsopen access
dc.subject.cdu676
dc.subject.cdu66
dc.subject.keywordFlocculation
dc.subject.keywordChitosan
dc.subject.keywordWet end additive
dc.subject.keywordFBRM
dc.subject.keywordMolecular weight
dc.subject.keywordCharge density
dc.subject.ucmIndustria del papel
dc.subject.ucmIngeniería química
dc.subject.ucmMedio ambiente
dc.subject.ucmQuímica industrial
dc.subject.unesco3312.13 Tecnología de la Madera
dc.subject.unesco3303 Ingeniería y Tecnología Químicas
dc.subject.unesco2391 Química Ambiental
dc.titleFlocculation efficiency of chitosans for papermaking applications
dc.typejournal article
dc.volume.number8
dspace.entity.typePublication
relation.isAuthorOfPublication75f551fb-7e58-4699-b2da-57c2e326b03c
relation.isAuthorOfPublication.latestForDiscovery75f551fb-7e58-4699-b2da-57c2e326b03c
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