Uso de taninos de espécies florestais no tratamento de água para abastecimento

Detalhes bibliográficos
Autor(a) principal: Sousa, Thaís Brito
Data de Publicação: 2015
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/10572
Resumo: The Cerrado is the second largest biome in South America and the savanna with the greatest biodiversity in the world, however, it is considered a "hotspot" mainly by the great timber exploitation intended for charcoal production. With the use restrictions of the charcoal from native forests, it has become necessary searching for alternative sources for the timber socioeconomic destination, which highlights the use of bark. One of the main bark products are tannins, secondary metabolites that can be for several purposes, such as coagulant in water treatment. Despite the advantages of using this biodegradable material, is still little known about the best extraction conditions and the tannins potential of the Brazilian species, and even less is known about the performance of these species in water treatment. In this study the objective was to investigate the influence of time and sodium sulfite concentration in the income in tannins in the bark of two forest species of the Cerrado (Anadenanthera pelegrina and Tachigali aurea), propose appropriate conditions of extraction of these species and use the tannins obtained from these barks as a natural coagulant in treating water for supply. Barks from the species were collected in the municipality of Barreiras-BA, they were dried, crushed and the material moisture was determined. The extraction followed the methodology used by Mori F. et al (2003), varying the time (2, 3 and 4 hours) and the sodium sulfite amount (0, 1, 2, 3 and 4%). The water treatment was carried out by Jartest equipment, where the tannins were mixed with aluminum sulfate and ferric chloride in different ratios. For virtually every parameter analyzed in both species, the influence of time and sodium sulfite were significant. For Anadenanthera peregrina indicated to 2:50 hours and the concentration of 3.6% sodium sulfite for obtaining increased yield in condensed tannins and for Tachigali aurea 3:03 hours and 5.8 % sodium sulfite. In water treatment, it was found that when it was used tannins separately or with chemical coagulants the turbidity followed standard of clarify the raw water, with very low efficiency. One of the reasons is because the material has not undergone chemical modification. In relation to pH it was found that tannins have not changed the same, differently from chemical reagents, this being interesting feature in treating water for supply.
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spelling Uso de taninos de espécies florestais no tratamento de água para abastecimentoCascasCerradoCoagulanteExtraçãoBarksCoagulantExtractionRelações Água-Madeira e SecagemThe Cerrado is the second largest biome in South America and the savanna with the greatest biodiversity in the world, however, it is considered a "hotspot" mainly by the great timber exploitation intended for charcoal production. With the use restrictions of the charcoal from native forests, it has become necessary searching for alternative sources for the timber socioeconomic destination, which highlights the use of bark. One of the main bark products are tannins, secondary metabolites that can be for several purposes, such as coagulant in water treatment. Despite the advantages of using this biodegradable material, is still little known about the best extraction conditions and the tannins potential of the Brazilian species, and even less is known about the performance of these species in water treatment. In this study the objective was to investigate the influence of time and sodium sulfite concentration in the income in tannins in the bark of two forest species of the Cerrado (Anadenanthera pelegrina and Tachigali aurea), propose appropriate conditions of extraction of these species and use the tannins obtained from these barks as a natural coagulant in treating water for supply. Barks from the species were collected in the municipality of Barreiras-BA, they were dried, crushed and the material moisture was determined. The extraction followed the methodology used by Mori F. et al (2003), varying the time (2, 3 and 4 hours) and the sodium sulfite amount (0, 1, 2, 3 and 4%). The water treatment was carried out by Jartest equipment, where the tannins were mixed with aluminum sulfate and ferric chloride in different ratios. For virtually every parameter analyzed in both species, the influence of time and sodium sulfite were significant. For Anadenanthera peregrina indicated to 2:50 hours and the concentration of 3.6% sodium sulfite for obtaining increased yield in condensed tannins and for Tachigali aurea 3:03 hours and 5.8 % sodium sulfite. In water treatment, it was found that when it was used tannins separately or with chemical coagulants the turbidity followed standard of clarify the raw water, with very low efficiency. One of the reasons is because the material has not undergone chemical modification. In relation to pH it was found that tannins have not changed the same, differently from chemical reagents, this being interesting feature in treating water for supply.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)O Cerrado é o segundo maior bioma da América do Sul e a savana de maior biodiversidade do mundo, entretanto, é considerado um “hotspot”, principalmente pela grande exploração das madeiras destinadas à produção de carvão vegetal. Com as restrições de uso do carvão vegetal de florestas nativas, tornou-se necessária a busca por fontes alternativas para destinação socioeconômica do material lenhoso, em que se destaca o uso das cascas. Um dos principais produtos das cascas são os taninos, metabólitos secundários que podem ser destinados a diversas finalidades, como agente coagulante no tratamento da água. Apesar das vantagens de utilizar esse material biodegradável, ainda pouco se sabe sobre as melhores condições de extração e o potencial tanífero das espécies brasileiras, e menos ainda se sabe a respeito do desempenho dessas espécies no tratamento da água. O objetivo neste trabalho foi verificar a influência do tempo e da concentração do sulfito de sódio no rendimento em taninos nas cascas de duas espécies florestais do Cerrado (Anadenanthera peregrina e Tachigali aurea), propor condições adequadas de extração dessas espécies e utilizar os taninos obtidos dessas cascas como coagulante natural no tratamento de água para abastecimento. As cascas das espécies foram coletadas no município de Barreiras-BA, as mesmas foram secas, moídas e a umidade do material determinada. A extração seguiu a metodologia usada por Mori F. A. et al. (2003), variando o tempo (2, 3 e 4 horas) e a quantidade de sulfito de sódio (0, 1, 2, 3 e 4%). O tratamento da água foi realizado pelo aparelho Jartest, onde os taninos foram misturados com sulfato de alumínio e cloreto férrico em diferentes proporções. Para praticamente todos os parâmetros analisados nas duas espécies, a influência do tempo e do sulfito de sódio foram significativas. Para a Anadenanthera peregrina indicou-se 02h50min e a concentração de 3,6% de sulfito de sódio para obtenção de maior rendimento em taninos condensados, e para a Tachigali aurea 3h03min e 5,8% de sulfito de sódio. No tratamento da água, verificou-se que quando se utilizou os taninos isoladamente ou com os coagulantes químicos, a turbidez seguiu o padrão de clarificação da água bruta, tendo eficiência muito baixa. Uma das justificativas é o fato do material não ter passado por modificação química. Em relação ao pH, verificou-se que os taninos não alteraram o mesmo, diferentemente dos reagentes químicos, sendo esta característica interessante no tratamento da água para abastecimento.Universidade Federal de LavrasPrograma de Pós-Graduação em Ciência e Tecnologia da MadeiraUFLAbrasilDepartamento de Ciências FlorestaisMori, Fábio AkiraTonoli, Gustavo Henrique DenzinOliveira, Luiz Fernando Coutinho deCalegario, NatalinoSousa, Thaís Brito2015-11-06T11:29:30Z2015-11-06T11:29:30Z2015-11-062015-07-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfSOUSA, T. B. Uso de taninos de espécies florestais no tratamento de água para abastecimento. 2015. 96 p. Dissertação (Mestrado em Ciência e Tecnologia da Madeira)-Universidade Federal de Lavras, Lavras, 2015.http://repositorio.ufla.br/jspui/handle/1/10572porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2016-11-11T16:22:20Zoai:localhost:1/10572Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2016-11-11T16:22:20Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Uso de taninos de espécies florestais no tratamento de água para abastecimento
title Uso de taninos de espécies florestais no tratamento de água para abastecimento
spellingShingle Uso de taninos de espécies florestais no tratamento de água para abastecimento
Sousa, Thaís Brito
Cascas
Cerrado
Coagulante
Extração
Barks
Coagulant
Extraction
Relações Água-Madeira e Secagem
title_short Uso de taninos de espécies florestais no tratamento de água para abastecimento
title_full Uso de taninos de espécies florestais no tratamento de água para abastecimento
title_fullStr Uso de taninos de espécies florestais no tratamento de água para abastecimento
title_full_unstemmed Uso de taninos de espécies florestais no tratamento de água para abastecimento
title_sort Uso de taninos de espécies florestais no tratamento de água para abastecimento
author Sousa, Thaís Brito
author_facet Sousa, Thaís Brito
author_role author
dc.contributor.none.fl_str_mv Mori, Fábio Akira
Tonoli, Gustavo Henrique Denzin
Oliveira, Luiz Fernando Coutinho de
Calegario, Natalino
dc.contributor.author.fl_str_mv Sousa, Thaís Brito
dc.subject.por.fl_str_mv Cascas
Cerrado
Coagulante
Extração
Barks
Coagulant
Extraction
Relações Água-Madeira e Secagem
topic Cascas
Cerrado
Coagulante
Extração
Barks
Coagulant
Extraction
Relações Água-Madeira e Secagem
description The Cerrado is the second largest biome in South America and the savanna with the greatest biodiversity in the world, however, it is considered a "hotspot" mainly by the great timber exploitation intended for charcoal production. With the use restrictions of the charcoal from native forests, it has become necessary searching for alternative sources for the timber socioeconomic destination, which highlights the use of bark. One of the main bark products are tannins, secondary metabolites that can be for several purposes, such as coagulant in water treatment. Despite the advantages of using this biodegradable material, is still little known about the best extraction conditions and the tannins potential of the Brazilian species, and even less is known about the performance of these species in water treatment. In this study the objective was to investigate the influence of time and sodium sulfite concentration in the income in tannins in the bark of two forest species of the Cerrado (Anadenanthera pelegrina and Tachigali aurea), propose appropriate conditions of extraction of these species and use the tannins obtained from these barks as a natural coagulant in treating water for supply. Barks from the species were collected in the municipality of Barreiras-BA, they were dried, crushed and the material moisture was determined. The extraction followed the methodology used by Mori F. et al (2003), varying the time (2, 3 and 4 hours) and the sodium sulfite amount (0, 1, 2, 3 and 4%). The water treatment was carried out by Jartest equipment, where the tannins were mixed with aluminum sulfate and ferric chloride in different ratios. For virtually every parameter analyzed in both species, the influence of time and sodium sulfite were significant. For Anadenanthera peregrina indicated to 2:50 hours and the concentration of 3.6% sodium sulfite for obtaining increased yield in condensed tannins and for Tachigali aurea 3:03 hours and 5.8 % sodium sulfite. In water treatment, it was found that when it was used tannins separately or with chemical coagulants the turbidity followed standard of clarify the raw water, with very low efficiency. One of the reasons is because the material has not undergone chemical modification. In relation to pH it was found that tannins have not changed the same, differently from chemical reagents, this being interesting feature in treating water for supply.
publishDate 2015
dc.date.none.fl_str_mv 2015-11-06T11:29:30Z
2015-11-06T11:29:30Z
2015-11-06
2015-07-09
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv SOUSA, T. B. Uso de taninos de espécies florestais no tratamento de água para abastecimento. 2015. 96 p. Dissertação (Mestrado em Ciência e Tecnologia da Madeira)-Universidade Federal de Lavras, Lavras, 2015.
http://repositorio.ufla.br/jspui/handle/1/10572
identifier_str_mv SOUSA, T. B. Uso de taninos de espécies florestais no tratamento de água para abastecimento. 2015. 96 p. Dissertação (Mestrado em Ciência e Tecnologia da Madeira)-Universidade Federal de Lavras, Lavras, 2015.
url http://repositorio.ufla.br/jspui/handle/1/10572
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Lavras
Programa de Pós-Graduação em Ciência e Tecnologia da Madeira
UFLA
brasil
Departamento de Ciências Florestais
publisher.none.fl_str_mv Universidade Federal de Lavras
Programa de Pós-Graduação em Ciência e Tecnologia da Madeira
UFLA
brasil
Departamento de Ciências Florestais
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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