Detalhes bibliográficos
| Ano de defesa: |
2011 |
| Autor(a) principal: |
Andrade, Eduardo Monteiro
 |
| Orientador(a): |
Santos, Tereza Simonne Mascarenhas |
| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Estadual de Feira de Santana
|
| Programa de Pós-Graduação: |
Mestrado em Engenharia Civil e Ambiental
|
| Departamento: |
DEPARTAMENTO DE TECNOLOGIA
|
| País: |
Brasil
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://tede2.uefs.br:8080/handle/tede/1072
|
Resumo: |
This work assessed the removing capacity of Pb2+ and Cu2+ ions by clinoptilolite in aqueous solution and in water from a residential well in an industrial zone at the Centro Industrial do Subaé, Feira de Santana, Bahia. The chemical composition was evaluated by X-ray (XRF) and inductive coupled plasma (ICP). The results indicated that the composition of clinoptilolita Celta Brazil, with ratio Si / Al 5,92, is similar those reported in the literature as typical for this zeolite. Clinoptilolite characterized by X Ray diffraction presented 19% in the mordenite phase and 1,07 mmol/g as capacity of cationic exchange. The pseudo-second order kinetic model was used to assess adsorption rate in simple solution of metals. The adsorption data better matched Freundlich isotherm and the Pb2+ adsortion capacity was found as 5,33 mg/g while for the Cu2+ it was 2,22 mg/g. The adsorption kinetics revealed that the time of 120 minutes was sufficient to reach equilibrium. For the essays with well water, cupper was completely removed and only 48% of the Pb2+ was adsorbed, which suggests that in this real system the metal ratio charge/radii favored the adsorption of cupper on the clinoptilolite. |
