Removal of cadmium and nickel from aqueous solution using expanded perlite
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , |
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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Brazilian Journal of Chemical Engineering |
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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 |
_version_ |
1754213173113651200 |