Especiação e quimissorção de Pb(II) em rejeito de caulim
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2013 |
| Outros Autores: | , , |
| Tipo de documento: | Artigo |
| Idioma: | por |
| Título da fonte: | Repositório Institucional da UFPA |
| Texto Completo: | http://repositorio.ufpa.br/jspui/handle/2011/5826 |
Resumo: | This study assesses the adsorption of Pb(II) on natural kaolin waste (KRnatural) and on that treated with 3 mol L-1 H2SO4 and HCl. Equilibrium and thermodynamic parameters were determined. The results indicate that the values of CEC, specific area and SiO2/Al2O3 ratio (4.6-6.0 cmol kg-1, 14.0-16.0 m² g-1 and 1.16-1.30, respectively) vary only slightly for the adsorbents; the concentration of Pb2+ is much higher than that of other species (PbOH+ and Pb(OH) 2). The values of RL, ΔGº, ΔHº and ΔSº are typical of feasible, spontaneous, exothermic and ordered adsorption. The chemisorption on KR natural is more feasible and ordered. |
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2014-10-03T12:04:37Z2014-10-03T12:04:37Z2013PINHEIRO, Marta Helena Tavares et al. Especiação e quimissorção de Pb(II) em rejeito de caulim. Química Nova, São Paulo, v. 36, n. 2, p. 272-278, 2013. Disponível em: <http://www.scielo.br/pdf/qn/v36n2/v36n2a13.pdf>. Acesso em: 18 jun. 2014. <http://dx.doi.org/10.1590/S0100-40422013000200013>.0100-4042http://repositorio.ufpa.br/jspui/handle/2011/5826This study assesses the adsorption of Pb(II) on natural kaolin waste (KRnatural) and on that treated with 3 mol L-1 H2SO4 and HCl. Equilibrium and thermodynamic parameters were determined. The results indicate that the values of CEC, specific area and SiO2/Al2O3 ratio (4.6-6.0 cmol kg-1, 14.0-16.0 m² g-1 and 1.16-1.30, respectively) vary only slightly for the adsorbents; the concentration of Pb2+ is much higher than that of other species (PbOH+ and Pb(OH) 2). The values of RL, ΔGº, ΔHº and ΔSº are typical of feasible, spontaneous, exothermic and ordered adsorption. The chemisorption on KR natural is more feasible and ordered.porAdsorçãoCaulimCaulinitaChumboEspeciação (Química)Especiação e quimissorção de Pb(II) em rejeito de caulimSpeciation and chemisorption of Pb(II) on kaolin wasteinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlePINHEIRO, Marta Helena TavaresLEMOS, Vanda PorpinoDANTAS, Kelly das Graças FernandesVALENTIM, Taynara Limainfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFPAinstname:Universidade Federal do Pará (UFPA)instacron:UFPAORIGINALArtigo_EspeciacaoQuimissorcaoPb.pdfArtigo_EspeciacaoQuimissorcaoPb.pdfapplication/pdf1405171http://repositorio.ufpa.br/oai/bitstream/2011/5826/1/Artigo_EspeciacaoQuimissorcaoPb.pdf5531f84299d1627b5d61b96020cd7d7eMD51CC-LICENSElicense_urllicense_urltext/plain; charset=utf-849http://repositorio.ufpa.br/oai/bitstream/2011/5826/2/license_url4afdbb8c545fd630ea7db775da747b2fMD52license_textlicense_texttext/html; charset=utf-822302http://repositorio.ufpa.br/oai/bitstream/2011/5826/3/license_text1e0094e9d8adcf16b18effef4ce7ed83MD53license_rdflicense_rdfapplication/rdf+xml; charset=utf-823148http://repositorio.ufpa.br/oai/bitstream/2011/5826/4/license_rdf9da0b6dfac957114c6a7714714b86306MD54LICENSElicense.txtlicense.txttext/plain; charset=utf-81775http://repositorio.ufpa.br/oai/bitstream/2011/5826/5/license.txta930293e49ae6e6b5c49a341d4a36286MD55TEXTArtigo_EspeciacaoQuimissorcaoPb.pdf.txtArtigo_EspeciacaoQuimissorcaoPb.pdf.txtExtracted texttext/plain37955http://repositorio.ufpa.br/oai/bitstream/2011/5826/6/Artigo_EspeciacaoQuimissorcaoPb.pdf.txt8a8bf4466d40f13f6940aea3c8a4e2e0MD562011/58262017-12-18 14:04:15.741oai:repositorio.ufpa.br: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Repositório InstitucionalPUBhttp://repositorio.ufpa.br/oai/requestriufpabc@ufpa.bropendoar:21232017-12-18T17:04:15Repositório Institucional da UFPA - Universidade Federal do Pará (UFPA)false |
| dc.title.pt_BR.fl_str_mv |
Especiação e quimissorção de Pb(II) em rejeito de caulim |
| dc.title.alternative.pt_BR.fl_str_mv |
Speciation and chemisorption of Pb(II) on kaolin waste |
| title |
Especiação e quimissorção de Pb(II) em rejeito de caulim |
| spellingShingle |
Especiação e quimissorção de Pb(II) em rejeito de caulim PINHEIRO, Marta Helena Tavares Adsorção Caulim Caulinita Chumbo Especiação (Química) |
| title_short |
Especiação e quimissorção de Pb(II) em rejeito de caulim |
| title_full |
Especiação e quimissorção de Pb(II) em rejeito de caulim |
| title_fullStr |
Especiação e quimissorção de Pb(II) em rejeito de caulim |
| title_full_unstemmed |
Especiação e quimissorção de Pb(II) em rejeito de caulim |
| title_sort |
Especiação e quimissorção de Pb(II) em rejeito de caulim |
| author |
PINHEIRO, Marta Helena Tavares |
| author_facet |
PINHEIRO, Marta Helena Tavares LEMOS, Vanda Porpino DANTAS, Kelly das Graças Fernandes VALENTIM, Taynara Lima |
| author_role |
author |
| author2 |
LEMOS, Vanda Porpino DANTAS, Kelly das Graças Fernandes VALENTIM, Taynara Lima |
| author2_role |
author author author |
| dc.contributor.author.fl_str_mv |
PINHEIRO, Marta Helena Tavares LEMOS, Vanda Porpino DANTAS, Kelly das Graças Fernandes VALENTIM, Taynara Lima |
| dc.subject.por.fl_str_mv |
Adsorção Caulim Caulinita Chumbo Especiação (Química) |
| topic |
Adsorção Caulim Caulinita Chumbo Especiação (Química) |
| description |
This study assesses the adsorption of Pb(II) on natural kaolin waste (KRnatural) and on that treated with 3 mol L-1 H2SO4 and HCl. Equilibrium and thermodynamic parameters were determined. The results indicate that the values of CEC, specific area and SiO2/Al2O3 ratio (4.6-6.0 cmol kg-1, 14.0-16.0 m² g-1 and 1.16-1.30, respectively) vary only slightly for the adsorbents; the concentration of Pb2+ is much higher than that of other species (PbOH+ and Pb(OH) 2). The values of RL, ΔGº, ΔHº and ΔSº are typical of feasible, spontaneous, exothermic and ordered adsorption. The chemisorption on KR natural is more feasible and ordered. |
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2013 |
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2013 |
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2014-10-03T12:04:37Z |
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2014-10-03T12:04:37Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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article |
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PINHEIRO, Marta Helena Tavares et al. Especiação e quimissorção de Pb(II) em rejeito de caulim. Química Nova, São Paulo, v. 36, n. 2, p. 272-278, 2013. Disponível em: <http://www.scielo.br/pdf/qn/v36n2/v36n2a13.pdf>. Acesso em: 18 jun. 2014. <http://dx.doi.org/10.1590/S0100-40422013000200013>. |
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http://repositorio.ufpa.br/jspui/handle/2011/5826 |
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0100-4042 |
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PINHEIRO, Marta Helena Tavares et al. Especiação e quimissorção de Pb(II) em rejeito de caulim. Química Nova, São Paulo, v. 36, n. 2, p. 272-278, 2013. Disponível em: <http://www.scielo.br/pdf/qn/v36n2/v36n2a13.pdf>. Acesso em: 18 jun. 2014. <http://dx.doi.org/10.1590/S0100-40422013000200013>. 0100-4042 |
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