Biosorption study of Ni2+ and Cr3+ by Sargassum filipendula: kinetics and equilibrium

Detalhes bibliográficos
Autor(a) principal: Seolatto,A. A.
Data de Publicação: 2014
Outros Autores: Martins,T. D., Bergamasco,R., Tavares,C. R. G., Cossich,E. S., Silva,E. A. da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Chemical Engineering
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322014000100020
Resumo: In this work, the biosorption of Cr3+ and Ni2+ by Sargassum filipendula pre-treated with CaCl2 was studied. Kinetic and equilibrium experiments were carried out for mono- and multi-component solutions in a batch reactor at pH 3.0 and 30 ºC. The results from the kinetic experiments showed that Cr3+ adsorbs slower than Ni2+. This behavior was explained by means of a mechanistic analysis, which showed that Cr3+ uptake presented three adsorption stages, whereas Ni2+ adsorption presents only two. The mono-component equilibrium data, along with binary kinetic data obtained from mono-component experiments, showed that, although the kinetics for Cr3+ removal are slower, the biomass had a stronger affinity for this ion. Almost all Ni2+ is desorbed from the biomass as Cr3+ adsorbs. The binary equilibrium data also presented this behavior. The binary data was also modeled by using modified forms of the Langmuir, Jain and Snoeyink, and Langmuir-Freundlich isotherms. However, the prediction obtained presented low accuracy. An alternative modeling with artificial neural networks was presented and the results showed that this technique could be a promising tool to represent binary equilibrium data. The main contribution of this work was to obtain experimental data for Cr3+/Ni2+ adsorption, which is a system rarely found in the literature and that provides information that could be used in process modeling and simulation.
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spelling Biosorption study of Ni2+ and Cr3+ by Sargassum filipendula: kinetics and equilibriumAlgal biomassMathematical modelingNeural networksSingle solutionBinary solutionIn this work, the biosorption of Cr3+ and Ni2+ by Sargassum filipendula pre-treated with CaCl2 was studied. Kinetic and equilibrium experiments were carried out for mono- and multi-component solutions in a batch reactor at pH 3.0 and 30 ºC. The results from the kinetic experiments showed that Cr3+ adsorbs slower than Ni2+. This behavior was explained by means of a mechanistic analysis, which showed that Cr3+ uptake presented three adsorption stages, whereas Ni2+ adsorption presents only two. The mono-component equilibrium data, along with binary kinetic data obtained from mono-component experiments, showed that, although the kinetics for Cr3+ removal are slower, the biomass had a stronger affinity for this ion. Almost all Ni2+ is desorbed from the biomass as Cr3+ adsorbs. The binary equilibrium data also presented this behavior. The binary data was also modeled by using modified forms of the Langmuir, Jain and Snoeyink, and Langmuir-Freundlich isotherms. However, the prediction obtained presented low accuracy. An alternative modeling with artificial neural networks was presented and the results showed that this technique could be a promising tool to represent binary equilibrium data. The main contribution of this work was to obtain experimental data for Cr3+/Ni2+ adsorption, which is a system rarely found in the literature and that provides information that could be used in process modeling and simulation.Brazilian Society of Chemical Engineering2014-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322014000100020Brazilian Journal of Chemical Engineering v.31 n.1 2014reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322014000100020info:eu-repo/semantics/openAccessSeolatto,A. A.Martins,T. D.Bergamasco,R.Tavares,C. R. G.Cossich,E. S.Silva,E. A. daeng2014-03-20T00:00:00Zoai:scielo:S0104-66322014000100020Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2014-03-20T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false
dc.title.none.fl_str_mv Biosorption study of Ni2+ and Cr3+ by Sargassum filipendula: kinetics and equilibrium
title Biosorption study of Ni2+ and Cr3+ by Sargassum filipendula: kinetics and equilibrium
spellingShingle Biosorption study of Ni2+ and Cr3+ by Sargassum filipendula: kinetics and equilibrium
Seolatto,A. A.
Algal biomass
Mathematical modeling
Neural networks
Single solution
Binary solution
title_short Biosorption study of Ni2+ and Cr3+ by Sargassum filipendula: kinetics and equilibrium
title_full Biosorption study of Ni2+ and Cr3+ by Sargassum filipendula: kinetics and equilibrium
title_fullStr Biosorption study of Ni2+ and Cr3+ by Sargassum filipendula: kinetics and equilibrium
title_full_unstemmed Biosorption study of Ni2+ and Cr3+ by Sargassum filipendula: kinetics and equilibrium
title_sort Biosorption study of Ni2+ and Cr3+ by Sargassum filipendula: kinetics and equilibrium
author Seolatto,A. A.
author_facet Seolatto,A. A.
Martins,T. D.
Bergamasco,R.
Tavares,C. R. G.
Cossich,E. S.
Silva,E. A. da
author_role author
author2 Martins,T. D.
Bergamasco,R.
Tavares,C. R. G.
Cossich,E. S.
Silva,E. A. da
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Seolatto,A. A.
Martins,T. D.
Bergamasco,R.
Tavares,C. R. G.
Cossich,E. S.
Silva,E. A. da
dc.subject.por.fl_str_mv Algal biomass
Mathematical modeling
Neural networks
Single solution
Binary solution
topic Algal biomass
Mathematical modeling
Neural networks
Single solution
Binary solution
description In this work, the biosorption of Cr3+ and Ni2+ by Sargassum filipendula pre-treated with CaCl2 was studied. Kinetic and equilibrium experiments were carried out for mono- and multi-component solutions in a batch reactor at pH 3.0 and 30 ºC. The results from the kinetic experiments showed that Cr3+ adsorbs slower than Ni2+. This behavior was explained by means of a mechanistic analysis, which showed that Cr3+ uptake presented three adsorption stages, whereas Ni2+ adsorption presents only two. The mono-component equilibrium data, along with binary kinetic data obtained from mono-component experiments, showed that, although the kinetics for Cr3+ removal are slower, the biomass had a stronger affinity for this ion. Almost all Ni2+ is desorbed from the biomass as Cr3+ adsorbs. The binary equilibrium data also presented this behavior. The binary data was also modeled by using modified forms of the Langmuir, Jain and Snoeyink, and Langmuir-Freundlich isotherms. However, the prediction obtained presented low accuracy. An alternative modeling with artificial neural networks was presented and the results showed that this technique could be a promising tool to represent binary equilibrium data. The main contribution of this work was to obtain experimental data for Cr3+/Ni2+ adsorption, which is a system rarely found in the literature and that provides information that could be used in process modeling and simulation.
publishDate 2014
dc.date.none.fl_str_mv 2014-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322014000100020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322014000100020
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0104-66322014000100020
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Brazilian Society of Chemical Engineering
publisher.none.fl_str_mv Brazilian Society of Chemical Engineering
dc.source.none.fl_str_mv Brazilian Journal of Chemical Engineering v.31 n.1 2014
reponame:Brazilian Journal of Chemical Engineering
instname:Associação Brasileira de Engenharia Química (ABEQ)
instacron:ABEQ
instname_str Associação Brasileira de Engenharia Química (ABEQ)
instacron_str ABEQ
institution ABEQ
reponame_str Brazilian Journal of Chemical Engineering
collection Brazilian Journal of Chemical Engineering
repository.name.fl_str_mv Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)
repository.mail.fl_str_mv rgiudici@usp.br||rgiudici@usp.br
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