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Removal of Cd(II), Zn(II) and Pb(II) from aqueous solutions by brown marine macro algae: kinetic modelling

2008Journal article Open access
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dc.contributor.authorFreitas, Olga
dc.contributor.authorMartins, Ramiro
dc.contributor.authorMatos, Cristina
dc.contributor.authorBoaventura, Rui
dc.date.accessioned2010-02-18T17:03:33Z
dc.date.available2010-02-18T17:03:33Z
dc.date.issued2008
dc.description.abstractSpecific marine macro algae species abundant at the Portuguese coast (Laminaria hiperborea, Bifurcaria bifurcata, Sargassum muticum and Fucus spiralis) were shown to be effective for removing toxic metals (Cd(II), Zn(II) and Pb(II)) from aqueous solutions. The initial metal concentrations in solution were about 75-100 mg L-1. The observed biosorption capacities for cadmium, zinc and lead ions were in the ranges of 23.9-39.5 mg g-1, 18.6-32.0 mg g-1 and 32.3-50.4 mg g-1, respectively. Kinetic studies revealed that the metal uptake rate was rather fast, with 75% of the total amount occurring in the first 10 min for all algal species. Experimental data were well fitted by a pseudo-second order rate equation. The contribution of internal diffusion mechanism was significant only to the initial biosorption stage. Results indicate that all the studied macro algae species can provide an efficient and cost-effective technology for eliminating heavy metals from industrial effluents.pt
dc.identifier.citationFreitas,Olga; Martins,Ramiro; Matos,Cristina; Boaventura,Rui (2008). Removal of Cd(II), Zn(II) and Pb(II) from aqueous solutions by brown marine macro algae: kinetic modelling. Journal of Hazardous Materials. ISSN 0304-3894. 153:1-2 (2008) p. 493-501pt
dc.identifier.doi10.1016/j.jhazmat.2007.08.081
dc.identifier.issn0304-3894
dc.identifier.urihttp://hdl.handle.net/10198/2007
dc.language.isoengpt
dc.publisherElsevierpt
dc.subjectBiosorptionpt
dc.subjectHeavy metalpt
dc.subjectMarine macro algaept
dc.subjectKinetic modellingpt
dc.titleRemoval of Cd(II), Zn(II) and Pb(II) from aqueous solutions by brown marine macro algae: kinetic modellingpt
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage501pt
oaire.citation.startPage493pt
oaire.citation.titleJournal of Hazardous Materialspt
person.familyNameMartins
person.givenNameRamiro
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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