Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/3664 https://doi.org/10.1016/j.mineng.2003.06.011 |
Resumo: | The depressant effect of corn starch, its polysaccharide components (amylose and amylopectin), the monomer glucose and the dimer maltose were studied on hematite and quartz, by means of infrared spectrometry, adsorption isotherms determination and microflotation tests. All the carbohydrates tested have been effective in maintaining hematite hydrophilic, including glucose and maltose; as for quartz, only a flocculation action (mainly by amylopectin) had a mild effect in decreasing its floatability by the amine collector. FTIR studies confirmed that the carbohydrates adsorbed intensively onto hematite and the spectra of the adsorbed polymers and monomer were very similar, even though the non-adsorbed monomer spectrum was markedly different. The common adsorption mechanism indicated is a surface reaction involving the iron ion. |
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Pavlovic, SuzanaBrandão, Paulo Roberto Gomes2014-10-31T12:37:08Z2014-10-31T12:37:08Z2003PAVLOVIC, S.; BRANDAO P. R. G. Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. Minerals Engineering, v. 16, p. 1117-1122, 2003. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0892687503003212>. Acesso em: 20 ago. 2014.0892-6875http://www.repositorio.ufop.br/handle/123456789/3664https://doi.org/10.1016/j.mineng.2003.06.011The depressant effect of corn starch, its polysaccharide components (amylose and amylopectin), the monomer glucose and the dimer maltose were studied on hematite and quartz, by means of infrared spectrometry, adsorption isotherms determination and microflotation tests. All the carbohydrates tested have been effective in maintaining hematite hydrophilic, including glucose and maltose; as for quartz, only a flocculation action (mainly by amylopectin) had a mild effect in decreasing its floatability by the amine collector. FTIR studies confirmed that the carbohydrates adsorbed intensively onto hematite and the spectra of the adsorbed polymers and monomer were very similar, even though the non-adsorbed monomer spectrum was markedly different. The common adsorption mechanism indicated is a surface reaction involving the iron ion.Mineral processingIron oresFlotation depressantsAdsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleO periódico Minerals Engineering concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3457171315747.info:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://www.repositorio.ufop.br/bitstream/123456789/3664/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52ORIGINALARTIGO_AdsorptionStarchAmylose.pdfARTIGO_AdsorptionStarchAmylose.pdfapplication/pdf287304http://www.repositorio.ufop.br/bitstream/123456789/3664/1/ARTIGO_AdsorptionStarchAmylose.pdf32b32c8e0f941c59e00479759ae91524MD51123456789/36642019-04-30 11:08:36.621oai:localhost: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Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-04-30T15:08:36Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. |
title |
Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. |
spellingShingle |
Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. Pavlovic, Suzana Mineral processing Iron ores Flotation depressants |
title_short |
Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. |
title_full |
Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. |
title_fullStr |
Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. |
title_full_unstemmed |
Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. |
title_sort |
Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. |
author |
Pavlovic, Suzana |
author_facet |
Pavlovic, Suzana Brandão, Paulo Roberto Gomes |
author_role |
author |
author2 |
Brandão, Paulo Roberto Gomes |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Pavlovic, Suzana Brandão, Paulo Roberto Gomes |
dc.subject.por.fl_str_mv |
Mineral processing Iron ores Flotation depressants |
topic |
Mineral processing Iron ores Flotation depressants |
description |
The depressant effect of corn starch, its polysaccharide components (amylose and amylopectin), the monomer glucose and the dimer maltose were studied on hematite and quartz, by means of infrared spectrometry, adsorption isotherms determination and microflotation tests. All the carbohydrates tested have been effective in maintaining hematite hydrophilic, including glucose and maltose; as for quartz, only a flocculation action (mainly by amylopectin) had a mild effect in decreasing its floatability by the amine collector. FTIR studies confirmed that the carbohydrates adsorbed intensively onto hematite and the spectra of the adsorbed polymers and monomer were very similar, even though the non-adsorbed monomer spectrum was markedly different. The common adsorption mechanism indicated is a surface reaction involving the iron ion. |
publishDate |
2003 |
dc.date.issued.fl_str_mv |
2003 |
dc.date.accessioned.fl_str_mv |
2014-10-31T12:37:08Z |
dc.date.available.fl_str_mv |
2014-10-31T12:37:08Z |
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.citation.fl_str_mv |
PAVLOVIC, S.; BRANDAO P. R. G. Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. Minerals Engineering, v. 16, p. 1117-1122, 2003. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0892687503003212>. Acesso em: 20 ago. 2014. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/3664 |
dc.identifier.issn.none.fl_str_mv |
0892-6875 |
dc.identifier.doi.none.fl_str_mv |
https://doi.org/10.1016/j.mineng.2003.06.011 |
identifier_str_mv |
PAVLOVIC, S.; BRANDAO P. R. G. Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. Minerals Engineering, v. 16, p. 1117-1122, 2003. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0892687503003212>. Acesso em: 20 ago. 2014. 0892-6875 |
url |
http://www.repositorio.ufop.br/handle/123456789/3664 https://doi.org/10.1016/j.mineng.2003.06.011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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reponame:Repositório Institucional da UFOP instname:Universidade Federal de Ouro Preto (UFOP) instacron:UFOP |
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UFOP |
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Repositório Institucional da UFOP |
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