Chemical regeneration of bone char associated with a continuous system for defluoridation of water
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFMG |
Texto Completo: | http://hdl.handle.net/1843/44396 |
Resumo: | Sources of fluoride contaminated water are found around the world and their treatment is required before human consumption. This paper contributes to advances in the use of bone-char as an adsorbent for fluoride, associating steps of chemical regeneration and fluoride adsorption in continuous systems, thereby making feasible the multiple use of the adsorbent. Following the development of low cost treatment of water defluoridation in a fixed bed column, using bone-char, regeneration was carried out with NaOH (0.5 mol/L) solution in subsequent adsorption/desorption cycles. The continuous system was modeled applying Thomas, Yoon-Nelson, Adams-Bohart, Wolborska and Yan models, and the Yan model showed the best adjustment. The adsorption capacity of 6.28 mg/g was obtained from the breakthrough curve. Chemical regeneration of bone-char was feasible, and a reduction in adsorption capacity of 30% was observed only after five adsorption/desorption cycles. |
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2022-08-19T17:20:00Z2022-08-19T17:20:00Z201936410.1590/0104-6632.20190364s2018025816784-383http://hdl.handle.net/1843/44396Sources of fluoride contaminated water are found around the world and their treatment is required before human consumption. This paper contributes to advances in the use of bone-char as an adsorbent for fluoride, associating steps of chemical regeneration and fluoride adsorption in continuous systems, thereby making feasible the multiple use of the adsorbent. Following the development of low cost treatment of water defluoridation in a fixed bed column, using bone-char, regeneration was carried out with NaOH (0.5 mol/L) solution in subsequent adsorption/desorption cycles. The continuous system was modeled applying Thomas, Yoon-Nelson, Adams-Bohart, Wolborska and Yan models, and the Yan model showed the best adjustment. The adsorption capacity of 6.28 mg/g was obtained from the breakthrough curve. Chemical regeneration of bone-char was feasible, and a reduction in adsorption capacity of 30% was observed only after five adsorption/desorption cycles.Fontes de água contaminada com flúor são encontradas em todo o mundo e seu tratamento é necessário antes do consumo humano. Este artigo contribui para avanços no uso do carvão de osso como adsorvente para flúor, associando etapas de regeneração química e adsorção de flúor em sistemas contínuos, viabilizando o uso múltiplo do adsorvente. Seguindo o desenvolvimento do tratamento de água de baixo custo defluoretação em coluna de leito fixo, utilizando-se osso-char, a regeneração foi realizada com NaOH (0,5 mol/L) solução em ciclos de adsorção/dessorção subsequentes. O sistema contínuo foi modelado aplicando Thomas, Os modelos Yoon-Nelson, Adams-Bohart, Wolborska e Yan, e o modelo Yan apresentaram o melhor ajuste. o a capacidade de adsorção de 6,28 mg/g foi obtida a partir da curva de ruptura. Regeneração química de osso-char foi viável, e uma redução na capacidade de adsorção de 30% foi observada somente após cinco ciclos.engUniversidade Federal de Minas GeraisUFMGBrasilENG - DEPARTAMENTO DE ENGENHARIA MINASBrazilian journal of chemical engineeringCarvão de OssoRegeneração QuímicaRemoção de FlúorModelagem de ColunasChemical regeneration of bone char associated with a continuous system for defluoridation of waterRegeneração química de carbonização óssea associada a um sistema contínuo de desfluoretação de águainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://www.scielo.br/j/bjce/a/zzRTQ7qy7MTQJDNgxRZ6hxS/?format=pdf&lang=enElbert Müller NigriAndré Luiz Alvarenga SantosAmit BhatnagarSônia Denise Ferreira Rochaapplication/pdfinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGLICENSELicense.txtLicense.txttext/plain; charset=utf-82042https://repositorio.ufmg.br/bitstream/1843/44396/1/License.txtfa505098d172de0bc8864fc1287ffe22MD51ORIGINAL2019_Chemical regeneration of bone char associated with a continuous system for defluoridation of water.pdf2019_Chemical regeneration of bone char associated with a continuous system for defluoridation of water.pdfapplication/pdf1551005https://repositorio.ufmg.br/bitstream/1843/44396/2/2019_Chemical%20regeneration%20of%20bone%20char%20associated%20with%20a%20continuous%20system%20for%20defluoridation%20of%20water.pdfecdfa38bf73170b243332a1321c2f0b4MD521843/443962022-08-19 14:20:00.245oai:repositorio.ufmg.br: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Repositório de PublicaçõesPUBhttps://repositorio.ufmg.br/oaiopendoar:2022-08-19T17:20Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG)false |
dc.title.pt_BR.fl_str_mv |
Chemical regeneration of bone char associated with a continuous system for defluoridation of water |
dc.title.alternative.pt_BR.fl_str_mv |
Regeneração química de carbonização óssea associada a um sistema contínuo de desfluoretação de água |
title |
Chemical regeneration of bone char associated with a continuous system for defluoridation of water |
spellingShingle |
Chemical regeneration of bone char associated with a continuous system for defluoridation of water Elbert Müller Nigri Carvão de Osso Regeneração Química Remoção de Flúor Modelagem de Colunas |
title_short |
Chemical regeneration of bone char associated with a continuous system for defluoridation of water |
title_full |
Chemical regeneration of bone char associated with a continuous system for defluoridation of water |
title_fullStr |
Chemical regeneration of bone char associated with a continuous system for defluoridation of water |
title_full_unstemmed |
Chemical regeneration of bone char associated with a continuous system for defluoridation of water |
title_sort |
Chemical regeneration of bone char associated with a continuous system for defluoridation of water |
author |
Elbert Müller Nigri |
author_facet |
Elbert Müller Nigri André Luiz Alvarenga Santos Amit Bhatnagar Sônia Denise Ferreira Rocha |
author_role |
author |
author2 |
André Luiz Alvarenga Santos Amit Bhatnagar Sônia Denise Ferreira Rocha |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Elbert Müller Nigri André Luiz Alvarenga Santos Amit Bhatnagar Sônia Denise Ferreira Rocha |
dc.subject.other.pt_BR.fl_str_mv |
Carvão de Osso Regeneração Química Remoção de Flúor Modelagem de Colunas |
topic |
Carvão de Osso Regeneração Química Remoção de Flúor Modelagem de Colunas |
description |
Sources of fluoride contaminated water are found around the world and their treatment is required before human consumption. This paper contributes to advances in the use of bone-char as an adsorbent for fluoride, associating steps of chemical regeneration and fluoride adsorption in continuous systems, thereby making feasible the multiple use of the adsorbent. Following the development of low cost treatment of water defluoridation in a fixed bed column, using bone-char, regeneration was carried out with NaOH (0.5 mol/L) solution in subsequent adsorption/desorption cycles. The continuous system was modeled applying Thomas, Yoon-Nelson, Adams-Bohart, Wolborska and Yan models, and the Yan model showed the best adjustment. The adsorption capacity of 6.28 mg/g was obtained from the breakthrough curve. Chemical regeneration of bone-char was feasible, and a reduction in adsorption capacity of 30% was observed only after five adsorption/desorption cycles. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019 |
dc.date.accessioned.fl_str_mv |
2022-08-19T17:20:00Z |
dc.date.available.fl_str_mv |
2022-08-19T17:20:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1843/44396 |
dc.identifier.doi.pt_BR.fl_str_mv |
10.1590/0104-6632.20190364s20180258 |
dc.identifier.issn.pt_BR.fl_str_mv |
16784-383 |
identifier_str_mv |
10.1590/0104-6632.20190364s20180258 16784-383 |
url |
http://hdl.handle.net/1843/44396 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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Brazilian journal of chemical engineering |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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Universidade Federal de Minas Gerais |
dc.publisher.initials.fl_str_mv |
UFMG |
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Brasil |
dc.publisher.department.fl_str_mv |
ENG - DEPARTAMENTO DE ENGENHARIA MINAS |
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Universidade Federal de Minas Gerais |
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UFMG |
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UFMG |
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