Removal of cadmium and nickel from aqueous solution using expanded perlite

Detalhes bibliográficos
Autor(a) principal: Torab-Mostaedi,M.
Data de Publicação: 2010
Outros Autores: Ghassabzadeh,H., Ghannadi-Maragheh,M., Ahmadi,S. J., Taheri,H.
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=S0104-66322010000200008
Resumo: The adsorption characteristics of cadmium and nickel onto expanded perlite from aqueous solution have been investigated with respect to changes in pH of solution, adsorbent dosage, contact time and temperature of the solution. The maximum removal efficiency of Cd (II) is 88.8% at pH 6 and exposure to 10 g/L expanded perlite, while for Ni (II), it is 93.3% at the same pH and exposure to 8 g/L adsorbent. For the adsorption of both metals, the Freundlich isotherm model fitted the equilibrium data better than the Langmuir isotherm model. Experimental data are also evaluated in terms of kinetic characteristics of adsorption and it was found that the adsorption process for both metal ions follows well pseudo-second-order kinetics. Thermodynamic functions, the change of free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°) of adsorption are also calculated for each metal ion. The results show that the adsorption of these metal ions on expanded perlite is feasible and exothermic at 20-50°C.
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spelling Removal of cadmium and nickel from aqueous solution using expanded perliteExpanded PerliteCadmiumNickelAdsorptionKineticsThe adsorption characteristics of cadmium and nickel onto expanded perlite from aqueous solution have been investigated with respect to changes in pH of solution, adsorbent dosage, contact time and temperature of the solution. The maximum removal efficiency of Cd (II) is 88.8% at pH 6 and exposure to 10 g/L expanded perlite, while for Ni (II), it is 93.3% at the same pH and exposure to 8 g/L adsorbent. For the adsorption of both metals, the Freundlich isotherm model fitted the equilibrium data better than the Langmuir isotherm model. Experimental data are also evaluated in terms of kinetic characteristics of adsorption and it was found that the adsorption process for both metal ions follows well pseudo-second-order kinetics. Thermodynamic functions, the change of free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°) of adsorption are also calculated for each metal ion. The results show that the adsorption of these metal ions on expanded perlite is feasible and exothermic at 20-50°C.Brazilian Society of Chemical Engineering2010-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322010000200008Brazilian Journal of Chemical Engineering v.27 n.2 2010reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322010000200008info:eu-repo/semantics/openAccessTorab-Mostaedi,M.Ghassabzadeh,H.Ghannadi-Maragheh,M.Ahmadi,S. J.Taheri,H.eng2010-08-04T00:00:00Zoai:scielo:S0104-66322010000200008Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2010-08-04T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false
dc.title.none.fl_str_mv Removal of cadmium and nickel from aqueous solution using expanded perlite
title Removal of cadmium and nickel from aqueous solution using expanded perlite
spellingShingle Removal of cadmium and nickel from aqueous solution using expanded perlite
Torab-Mostaedi,M.
Expanded Perlite
Cadmium
Nickel
Adsorption
Kinetics
title_short Removal of cadmium and nickel from aqueous solution using expanded perlite
title_full Removal of cadmium and nickel from aqueous solution using expanded perlite
title_fullStr Removal of cadmium and nickel from aqueous solution using expanded perlite
title_full_unstemmed Removal of cadmium and nickel from aqueous solution using expanded perlite
title_sort Removal of cadmium and nickel from aqueous solution using expanded perlite
author Torab-Mostaedi,M.
author_facet Torab-Mostaedi,M.
Ghassabzadeh,H.
Ghannadi-Maragheh,M.
Ahmadi,S. J.
Taheri,H.
author_role author
author2 Ghassabzadeh,H.
Ghannadi-Maragheh,M.
Ahmadi,S. J.
Taheri,H.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Torab-Mostaedi,M.
Ghassabzadeh,H.
Ghannadi-Maragheh,M.
Ahmadi,S. J.
Taheri,H.
dc.subject.por.fl_str_mv Expanded Perlite
Cadmium
Nickel
Adsorption
Kinetics
topic Expanded Perlite
Cadmium
Nickel
Adsorption
Kinetics
description The adsorption characteristics of cadmium and nickel onto expanded perlite from aqueous solution have been investigated with respect to changes in pH of solution, adsorbent dosage, contact time and temperature of the solution. The maximum removal efficiency of Cd (II) is 88.8% at pH 6 and exposure to 10 g/L expanded perlite, while for Ni (II), it is 93.3% at the same pH and exposure to 8 g/L adsorbent. For the adsorption of both metals, the Freundlich isotherm model fitted the equilibrium data better than the Langmuir isotherm model. Experimental data are also evaluated in terms of kinetic characteristics of adsorption and it was found that the adsorption process for both metal ions follows well pseudo-second-order kinetics. Thermodynamic functions, the change of free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°) of adsorption are also calculated for each metal ion. The results show that the adsorption of these metal ions on expanded perlite is feasible and exothermic at 20-50°C.
publishDate 2010
dc.date.none.fl_str_mv 2010-06-01
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=S0104-66322010000200008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322010000200008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0104-66322010000200008
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.27 n.2 2010
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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