Batch removal of manganese from acid mine drainage using bone char.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorSicupira, Dalila Chaves-
Autor(es): dc.creatorSilva, T. Tolentino-
Autor(es): dc.creatorLeão, Versiane Albis-
Autor(es): dc.creatorMansur, Marcelo Borges-
Data de aceite: dc.date.accessioned2019-11-06T13:35:29Z-
Data de disponibilização: dc.date.available2019-11-06T13:35:29Z-
Data de envio: dc.date.issued2015-12-04-
Data de envio: dc.date.issued2015-12-04-
Data de envio: dc.date.issued2014-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/5899-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/558858-
Descrição: dc.descriptionThe present study investigated batch kinetics and the batch equilibrium of manganese removal from acid mine drainage (AMD) using bone char as an adsorbent. Equilibrium tests revealed that the Langmuir-based maximum manganese uptake capacity was 22 mg g-1 for AMD effluents and 20 mg g-1 for laboratory solutions at a pH ranging from 5.5 to 5.7. The pseudo-second order model best described the manganese kinetics within bone char. Manganese removal was mainly influenced by the operating variables of the solid/liquid ratio and the pH of the aqueous phase. In fact, metal uptake was favored at nearly neutral pH values. The effect of particle size and temperature proved to be insignificant for the investigated operating range. This work also evaluated the mechanism for manganese removal using bone char. Results showed that intraparticle diffusion is the main rate-limiting step; however, additional contributions from boundary layer diffusion may well affect this removal when particles of smaller sizes are used. The final concentration of fluoride and other metals present in the AMD effluent was in agreement with the concentration limit set forth by Brazilian legislation. The present study demonstrated that bone char is a suitable material to be used for the removal of manganese from AMD effluents.-
Idioma: dc.languageen-
Direitos: dc.rightsTodo o conteúdo do periódico Brazilian Journal of Chemical Engineering, exceto onde identificado, está licenciado sob uma licença Creative Commons que permite copiar, distribuir e transmitir o trabalho em qualquer suporte ou formato desde que sejam citados o autor e o licenciante. Fonte: <http://www.scielo.br/scielo.php?script=sci_serial&pid=0104-6632&lng=en&nrm=iso>. Acesso em: 21 out. 2015.-
Palavras-chave: dc.subjectManganese-
Palavras-chave: dc.subjectBone char-
Palavras-chave: dc.subjectAcid mine drainage-
Palavras-chave: dc.subjectAdsorption-
Título: dc.titleBatch removal of manganese from acid mine drainage using bone char.-
Aparece nas coleções:Repositório Institucional - UFOP

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