Sistema sinérgico de microalgas e ozônio para o tratamento sustentável de águas residuárias agroindustriais

Santos, Mônica Silva dos

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Campo DC	Valor	Idioma
dc.contributor.author	Santos, Mônica Silva dos	-
dc.date.accessioned	2026-10-07T16:04:55Z	-
dc.date.available	2026-10-07T16:04:55Z	-
dc.date.issued	2026-02-26	-
dc.identifier.citation	SANTOS, Mônica Silva dos. Sistema sinérgico de microalgas e ozônio para o tratamento sustentável de águas residuárias agroindustriais. 2026. 70 f. Dissertação (Mestrado em Engenharia Agrícola e Ambiental) - Instituto de Tecnologia, Universidade Federal Rural do Rio de Janeiro, Seropédica, 2026.	pt_BR
dc.identifier.uri	http://rima.ufrrj.br/jspui/handle/20.500.14407/26526	-
dc.description.abstract	O tratamento de águas residuárias agroindustriais representa um desafio crescente devido à elevada carga orgânica, nutrientes e compostos recalcitrantes presentes nesses efluentes. Deste modo, este estudo teve como objetivo, investigar a eficiência de um sistema integrado composto pelo cultivo de microalgas em fotobiorreatores seguido por ozonização, aplicado a águas residuárias sintéticas de laticínios e a efluentes da indústria de biopesticidas e biofertilizantes. O experimento foi conduzido em duas etapas sequenciais. Inicialmente, as águas residuárias agroindustriais (laticínios e biopesticidas/biofertilizantes) foram submetidas a tratamento biológico em fotobiorreatores com microalgas, visando a remoção de poluentes e a produção de biomassa. Posteriormente, o sobrenadante obtido foi tratado por ozonização, utilizando diferente condições operacionais de geração de ozônio. Ao longo do processo, foram monitorados parâmetros físico-químicos, crescimento da biomassa, extração lipídica e perfil de ácidos graxos, além da avaliação de desempenho do sistema por meio de análises laboratoriais e balanço de massa. O cultivo de microalgas promoveu significativa redução de matéria orgânica e nutrientes, com remoções superiores a 90% para nitrogênio, fósforo e compostos fenólicos, além de gerar biomassa com teores lipídicos entre 7,26% (laticínios) e 9,36% (biopesticidas/biofertilizantes). Na etapa subsequente, a aplicação de ozônio, promoveu remoções adicionais, alcançando reduções superiores a 90% em cor, turbidez, demanda química de oxigênio e demanda bioquímica de oxigênio. A integração entre microalgas e oxidação química demonstrou efeito sinérgico, culminando em um tratamento final com elevada claridade e baixos níveis de poluentes. Os resultados indicam que a combinação entre processos biológicos e oxidativos constitui uma alternativa promissora para o tratamento de efluentes agroindustriais, favorecendo a mitigação ambiental e a geração de bioprodutos	pt_BR
dc.description.sponsorship	Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES	pt_BR
dc.language	por	pt_BR
dc.publisher	Universidade Federal Rural do Rio de Janeiro	pt_BR
dc.subject	biorrecurso	pt_BR
dc.subject	controle de poluição	pt_BR
dc.subject	economia circular	pt_BR
dc.subject	oxidação	pt_BR
dc.subject	bioresource	pt_BR
dc.subject	circular economy	pt_BR
dc.subject	oxidation	pt_BR
dc.subject	pollution control	pt_BR
dc.title	Sistema sinérgico de microalgas e ozônio para o tratamento sustentável de águas residuárias agroindustriais	pt_BR
dc.title.alternative	Synergistic microalgae and ozone system for the sustainable treatment of agroindustrial wastewater	en
dc.type	Dissertação	pt_BR
dc.description.abstractOther	The treatment of agro-industrial wastewater poses a growing challenge due to the high levels of organic matter, nutrients, and recalcitrant compounds present in these effluents. Thus, this study aimed to investigate the efficiency of an integrated system consisting of microalgae cultivation in photobioreactors followed by ozonation, applied to synthetic dairy wastewater and effluents from the biopesticide and biofertilizer industry. The experiment was conducted in two sequential stages. Initially, the agro-industrial wastewater (dairy and biopesticides/biofertilizers) underwent biological treatment in photobioreactors with microalgae, aiming to remove pollutants and produce biomass. Subsequently, the supernatant obtained was treated by ozonation, using different operational conditions for ozone generation. Throughout the process, physicochemical parameters, biomass growth, lipid extraction, and fatty acid profiles were monitored, in addition to evaluating system performance through laboratory analyses and mass balance. Microalgae cultivation resulted in a significant reduction in organic matter and nutrients, with removals exceeding 90% for nitrogen, phosphorus, and phenolic compounds, in addition to generating biomass with lipid contents ranging from 7.26% (dairy products) to 9.36% (biopesticides/biofertilizers). In the subsequent stage, the application of ozone promoted additional removals, achieving reductions exceeding 90% in color, turbidity, chemical oxygen demand, and biochemical oxygen demand. The integration of microalgae and chemical oxidation demonstrated a synergistic effect, resulting in a final treatment with high clarity and low levels of pollutants. The results indicate that the combination of biological and oxidative processes constitutes a promising alternative for the treatment of agro-industrial effluents, promoting environmental mitigation and the generation of bioproducts	en
dc.contributor.advisor1	Mendonça, Henrique Vieira de	-
dc.contributor.advisor1ID	https://orcid.org/0000-0001-7242-5110	pt_BR
dc.contributor.advisor1Lattes	http://lattes.cnpq.br/8897355054570578	pt_BR
dc.contributor.referee1	Mendonça, Henrique Vieira de	-
dc.contributor.referee1ID	https://orcid.org/0000-0001-7242-5110	pt_BR
dc.contributor.referee1Lattes	http://lattes.cnpq.br/8897355054570578	pt_BR
dc.contributor.referee2	Cipolatti, Eliane Pereira	-
dc.contributor.referee2ID	https://orcid.org/0000-0002-3272-712X	pt_BR
dc.contributor.referee2Lattes	http://lattes.cnpq.br/5163727467004626	pt_BR
dc.contributor.referee3	Vilas Bôas, Renata Nazaré	-
dc.contributor.referee3ID	https://orcid.org/0000-0002-0061-8703	pt_BR
dc.contributor.referee3Lattes	http://lattes.cnpq.br/7908954874920549	pt_BR
dc.creator.ID	https://orcid.org/0009-0004-2661-6660	pt_BR
dc.creator.Lattes	http://lattes.cnpq.br/1852078165564103	pt_BR
dc.publisher.country	Brasil	pt_BR
dc.publisher.department	Instituto de Tecnologia	pt_BR
dc.publisher.initials	UFRRJ	pt_BR
dc.publisher.program	Programa de Pós-Graduação em Engenharia Agrícola e Ambiental	pt_BR
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Effect of recirculation and hydraulic loading rate on ammonium and phosphate recovery from fertilizer industry wastewater. Heliyon, v. 9, n. 9, p. e20255, 2023. ZHANG, H. et al. A critical review of ozone-based electrochemical advanced oxidation processes for water treatment: Fundamentals, stability evaluation, and application. Chemosphere, v. 365, n. September, p. 143330, 2024. 70 ZKERI, E. et al. Comparing the use of a two-stage MBBR system with a methanogenic MBBR coupled with a microalgae reactor for medium-strength dairy wastewater treatment. Bioresource Technology, v. 323, n. December 2020, p. 124629, 2021.	pt_BR
dc.subject.cnpq	Ecologia	pt_BR
dc.subject.cnpq	Engenharia Agrícola	pt_BR
dc.subject.cnpq	Ecologia	pt_BR
dc.subject.cnpq	Engenharia Agrícola	pt_BR
Aparece nas coleções:	Mestrado em Engenharia Agrícola e Ambiental

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