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Cadmium(II) and zinc(II) adsorption by the aquatic moss Fontinalis antipyretica: Effect of temperature, pH and water hardness

2004Journal article Open access
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dc.contributor.authorMartins, Ramiro
dc.contributor.authorPardo, Rosana
dc.contributor.authorBoaventura, Rui
dc.date.accessioned2010-02-18T16:20:11Z
dc.date.available2010-02-18T16:20:11Z
dc.date.issued2004
dc.description.abstractThe biosorption of cadmium(II) and zinc(II) ions onto dried Fontinalis antipyretica, a widely spread aquatic moss, was studied under different values of temperature, initial pH and water hardness. The equilibrium was well described by Langmuir adsorption isotherms. Maximum biosorption capacity of cadmium was independent on temperature and averaged 28.0mg g 1 moss, whereas for zinc, capacity increased with temperature, from 11.5mg g 1 moss at 5 C to 14.7mg g 1 moss at 30 C. Optimum adsorption pH value was determined as 5.0 for both metal ions. Cadmium uptake was unaffected by the presence of calcium ions, but zinc sorption was improved when water hardness increased from 101.1 to 116.3mg CaCO3 l 1. Inversely, as hardness increases, the competition with calcium ions strongly reduces the affinity of the biosorbent for zinc.pt
dc.description.sponsorshipThe authors thank the Portuguese Foundation for Science and Technology (FCT) for the financial support under the research project POCTI/C/EQU/12139/98.
dc.identifier.citationMartins, Ramiro; Pardo, Rosana; Boaventura, Rui (2004). Cadmium(II) and zinc(II) adsorption by the aquatic moss Fontinalis antipyretica: effect of temperature, pH and wat:er hardness. Water Research. ISSN 0043-1354. 38:3, p. 693-699pt
dc.identifier.doi10.1016/j.watres.2003.10.013
dc.identifier.issn0043-1354
dc.identifier.urihttp://hdl.handle.net/10198/2001
dc.language.isoengpt
dc.publisherElsevierpt
dc.subjectAquatic mosspt
dc.subjectZincpt
dc.subjectCadmiumpt
dc.subjectSorptionpt
dc.subjectHeavy metalspt
dc.subjectFontinalis antipyreticapt
dc.titleCadmium(II) and zinc(II) adsorption by the aquatic moss Fontinalis antipyretica: Effect of temperature, pH and water hardnesspt
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage699pt
oaire.citation.issue38(3)pt
oaire.citation.startPage693pt
oaire.citation.titleWater Researchpt
person.familyNameEspinheira Martins
person.givenNameRamiro José
person.identifier.ciencia-idEA17-F39C-29C7
person.identifier.orcid0000-0003-4327-7782
rcaap.rightsopenAccesspt
rcaap.typearticlept
relation.isAuthorOfPublicationbf713e37-c17f-4a4e-8323-a7b770a038bf
relation.isAuthorOfPublication.latestForDiscoverybf713e37-c17f-4a4e-8323-a7b770a038bf

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