Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/1165
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dc.contributor.authorMillero, Frank J.es
dc.contributor.authorGonzález-Dávila, Melchores
dc.contributor.otherFacultad de Ciencias del Mares
dc.contributor.otherDepartamento de Químicaes
dc.date.accessioned2009-10-08T02:31:00Z-
dc.date.accessioned2018-03-01T13:48:13Z-
dc.date.available2018-03-01T13:48:13Z-
dc.date.issued1990es
dc.identifier.issn0016-7037es
dc.identifier.otherHostinges
dc.identifier.urihttp://hdl.handle.net/10553/1165-
dc.description.abstractThe interaction of metal ions with particulate matter is important in limiting their concentration in seawater. Chitin is one of the constituents of the natural particulate organic matter than can interact with metal ions and therefore may serve as a reasonable model for natural organic solids. The adsorption of Cu2+ on the chitin surface has been studied in seawater as a function of pH, temperature, and salinity. The amphoteric properties of the surface of chitin were characterized in 0.7 M NaCl in terms of a two-protic acid-base system (pHPZC = 5.4) with acidity constants and . The maximum proton exchange capacity of chitin was found to be 2.3 ± 0.3 mol kg−1, broadly similar to other solids. The rates of the adsorption were quite rapid () and not strongly affected by the presence of other metals such as Cd2+ and Pb2+. The adsorption equilibrium data have been found to correlate well with surface complex-formation equilibria or the mathematically equivalent Langmuir- type adsorption equilibria. The value for the stability constant of Cu2+ on chitin was found to be , and the complexing capacity of chitin was found to be 6.9 and 5.9 μmol g−1, respectively, in the absence and in the presence of Cd2+ and Pb2+. An increase in the salinity and a decrease in the temperature result in greater adsorption of Cu2+ to chitinen
dc.languagespaes
dc.relation.ispartofGeochimica et Cosmochimica Actaes
dc.sourceGeochimica et Cosmochimica Acta [ISSN 0016-7037], v. 54, p. 761-768es
dc.subject.otherQuitinaes
dc.subject.otherCobrees
dc.subject.otherAdsorciónes
dc.titleThe adsorption of copper to chitin in seawateres
dc.typeinfo:eu-repo/semantics/articlees
dc.typeArticlees
dc.identifier.doi10.1016/0016-7037(90)90371-Qes
dc.contributor.contentdmQUIMAes
dc.contributor.contentdmQuímicaes
dc.contributor.contentdmFacultad de Ciencias del Mares
dc.identifier.absysnet350450es
dc.identifier.crisid2199-
dc.rights.accessrightsinfo:eu-repo/semantics/openAccesses
dc.type2Artículoes
dc.identifier.ulpgces
dc.description.scieSCIE
item.grantfulltextopen-
item.fulltextCon texto completo-
crisitem.author.deptGIR IOCAG: Química Marina-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Química-
crisitem.author.orcid0000-0003-3230-8985-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.fullNameGonzález Dávila, Melchor-
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