Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algal
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/55277 |
Resumo: | The high rate algal ponds (HRAP) comprise one of algal cultivation system types and provide treatment for various effluents with efficiency and economy. Understanding the limitations and mechanisms of the photosynthetic process, nutrients assimilation, degradation of organic compounds and consequent microalgae/bacteria growth are fundamental for the wastewater treatment and high biomass productivity. In summary, the study brought several contributions to the literature. First, the focus was algae cultivation in HRAP with UASB reactor effluent from the Wastewater Treatment Plant at UFLA as a source of nutrients (phosphorus, nitrogen and organic matter). By maintaining the temperature and hydraulic retention time (HRT) it was possible to determine the best cultivation condition with high biomass productivity, as well as, by laboratory analysis, it was possible to determine the removal efficiency in accordance with current environmental legislation for effluents disposal in water bodies. Under HRT of 10 days and variable temperature throughout the day, primary and total biomass productivity was observed at 0.13 and 4.85 g m-2 d -1 , respectively. In this operating condition, the removal of ammonia nitrogen, COD and total phosphorus were 89.86, 54.41 and 42.39%, respectively. Afterwards, the biochemical composition of generated biomass was analyzed in order to guide energy conversion routes development in the future. The proposed system obtained removal efficiencies above those required by legislation and the ability to generate biomass with significant properties for energy conversion, highlighting the carbohydrate content at 19.61%. |
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Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algalEffluent treatment in a high rate algal pond and energy potential of algal biomassCultivo em efluenteRecuperação de nutrientesBiocombustíveisConversão energéticaCultivation in effluentNutrient recoveryBiofuelsEnergy conversionSaneamento ambientalThe high rate algal ponds (HRAP) comprise one of algal cultivation system types and provide treatment for various effluents with efficiency and economy. Understanding the limitations and mechanisms of the photosynthetic process, nutrients assimilation, degradation of organic compounds and consequent microalgae/bacteria growth are fundamental for the wastewater treatment and high biomass productivity. In summary, the study brought several contributions to the literature. First, the focus was algae cultivation in HRAP with UASB reactor effluent from the Wastewater Treatment Plant at UFLA as a source of nutrients (phosphorus, nitrogen and organic matter). By maintaining the temperature and hydraulic retention time (HRT) it was possible to determine the best cultivation condition with high biomass productivity, as well as, by laboratory analysis, it was possible to determine the removal efficiency in accordance with current environmental legislation for effluents disposal in water bodies. Under HRT of 10 days and variable temperature throughout the day, primary and total biomass productivity was observed at 0.13 and 4.85 g m-2 d -1 , respectively. In this operating condition, the removal of ammonia nitrogen, COD and total phosphorus were 89.86, 54.41 and 42.39%, respectively. Afterwards, the biochemical composition of generated biomass was analyzed in order to guide energy conversion routes development in the future. The proposed system obtained removal efficiencies above those required by legislation and the ability to generate biomass with significant properties for energy conversion, highlighting the carbohydrate content at 19.61%.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)As lagoas de alta taxa (LATs) compreendem um dos tipos de sistema de cultivo algal e fornecem tratamento para diversos efluentes com eficiência e economia. Entender as limitações e os mecanismos do processo fotossintético, assimilação de nutrientes, degradação de compostos orgânicos e consequente crescimento das microalgas/bactérias são fundamentais para o tratamento de águas residuais e alta produtividade de biomassa. Em síntese, o estudo trouxe várias contribuições para a literatura. Primeiramente, o foco foi o cultivo de algas em LAT com o efluente do reator UASB da Estação de Tratamento de Esgoto da UFLA como fonte de nutrientes (fósforo, nitrogênio e matéria orgânica). Através da manutenção da temperatura e tempo de detenção hidráulica (TDH) foi possível determinar a melhor condição de cultivo com alta produtividade de biomassa, assim como, por análises de laboratório foi possível determinar a eficiência de remoção em conformidade com as legislações ambientais vigentes para disposição de efluentes em corpos d’agua. Sob TDH de 10 dias e temperatura variável ao longo do dia foram observadas a produtividades primária e total de biomassa de 0,13 e 4,85 g m-2 d -1 , respectivamente. Nesta condição de operação, a remoção de nitrogênio amoniacal, DQO e fósforo total foram de 89,86, 54,41 e 42,39%, respectivamente. Após, a composição bioquímica da biomassa gerada foi analisada com a finalidade de orientar futuramente o desenvolvimento de rotas de conversão energética. O sistema proposto obteve eficiências de remoção acima do exigido pela legislação e a capacidade de gerar biomassa com significativas propriedades para conversão energética, destacando-se o conteúdo de carboidratos de 19,61%.Universidade Federal de LavrasPrograma de Pós-Graduação em Engenharia AmbientalUFLAbrasilDepartamento de EngenhariaEnsinas, Adriano VianaAssemany, Paula PeixotoCamargo, Lívia Seno FerreiraFia, RonaldoRamos, Thiago Silva2022-10-10T21:09:42Z2022-10-10T21:09:42Z2022-10-102022-06-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfRAMOS, T. S. Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algal. 2022. 122 p. Dissertação (Mestrado em Engenharia Ambiental) - Universidade Federal de Lavras, Lavras, 2022.http://repositorio.ufla.br/jspui/handle/1/55277porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2023-04-19T11:22:14Zoai:localhost:1/55277Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-04-19T11:22:14Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algal Effluent treatment in a high rate algal pond and energy potential of algal biomass |
title |
Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algal |
spellingShingle |
Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algal Ramos, Thiago Silva Cultivo em efluente Recuperação de nutrientes Biocombustíveis Conversão energética Cultivation in effluent Nutrient recovery Biofuels Energy conversion Saneamento ambiental |
title_short |
Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algal |
title_full |
Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algal |
title_fullStr |
Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algal |
title_full_unstemmed |
Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algal |
title_sort |
Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algal |
author |
Ramos, Thiago Silva |
author_facet |
Ramos, Thiago Silva |
author_role |
author |
dc.contributor.none.fl_str_mv |
Ensinas, Adriano Viana Assemany, Paula Peixoto Camargo, Lívia Seno Ferreira Fia, Ronaldo |
dc.contributor.author.fl_str_mv |
Ramos, Thiago Silva |
dc.subject.por.fl_str_mv |
Cultivo em efluente Recuperação de nutrientes Biocombustíveis Conversão energética Cultivation in effluent Nutrient recovery Biofuels Energy conversion Saneamento ambiental |
topic |
Cultivo em efluente Recuperação de nutrientes Biocombustíveis Conversão energética Cultivation in effluent Nutrient recovery Biofuels Energy conversion Saneamento ambiental |
description |
The high rate algal ponds (HRAP) comprise one of algal cultivation system types and provide treatment for various effluents with efficiency and economy. Understanding the limitations and mechanisms of the photosynthetic process, nutrients assimilation, degradation of organic compounds and consequent microalgae/bacteria growth are fundamental for the wastewater treatment and high biomass productivity. In summary, the study brought several contributions to the literature. First, the focus was algae cultivation in HRAP with UASB reactor effluent from the Wastewater Treatment Plant at UFLA as a source of nutrients (phosphorus, nitrogen and organic matter). By maintaining the temperature and hydraulic retention time (HRT) it was possible to determine the best cultivation condition with high biomass productivity, as well as, by laboratory analysis, it was possible to determine the removal efficiency in accordance with current environmental legislation for effluents disposal in water bodies. Under HRT of 10 days and variable temperature throughout the day, primary and total biomass productivity was observed at 0.13 and 4.85 g m-2 d -1 , respectively. In this operating condition, the removal of ammonia nitrogen, COD and total phosphorus were 89.86, 54.41 and 42.39%, respectively. Afterwards, the biochemical composition of generated biomass was analyzed in order to guide energy conversion routes development in the future. The proposed system obtained removal efficiencies above those required by legislation and the ability to generate biomass with significant properties for energy conversion, highlighting the carbohydrate content at 19.61%. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-10-10T21:09:42Z 2022-10-10T21:09:42Z 2022-10-10 2022-06-28 |
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 |
RAMOS, T. S. Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algal. 2022. 122 p. Dissertação (Mestrado em Engenharia Ambiental) - Universidade Federal de Lavras, Lavras, 2022. http://repositorio.ufla.br/jspui/handle/1/55277 |
identifier_str_mv |
RAMOS, T. S. Tratamento de efluente em Lagoa de Alta Taxa e potencial energético da biomassa algal. 2022. 122 p. Dissertação (Mestrado em Engenharia Ambiental) - Universidade Federal de Lavras, Lavras, 2022. |
url |
http://repositorio.ufla.br/jspui/handle/1/55277 |
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 Engenharia Ambiental UFLA brasil Departamento de Engenharia |
publisher.none.fl_str_mv |
Universidade Federal de Lavras Programa de Pós-Graduação em Engenharia Ambiental UFLA brasil Departamento de Engenharia |
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) |
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UFLA |
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UFLA |
reponame_str |
Repositório Institucional da UFLA |
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Repositório Institucional da UFLA |
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Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
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nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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