Advanced Oxidation
Mostrando 1-12 de 129 artigos, teses e dissertações.
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1. Advanced Oxidation Processes to the Remediation of Liquid Residue from the Thermal Treatment of Oily Sludge
This work reports the remediation of a liquid residue derived from the thermal treatment of petrochemical residues by advanced oxidation processes. Firstly, degradation studies of phenol aqueous solutions by heterogeneous photocatalysis, Fenton, and photo-Fenton were conducted. Fenton processes showed a higher efficiency, mainly in the UVA photo-assisted mod
J. Braz. Chem. Soc.. Publicado em: 04/07/2019
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2. Tratamento de efluentes de lavanderia hospitalar por processo oxidativo avançado: UV/H2O2
RESUMO O objetivo deste trabalho foi avaliar o tratamento de efluentes de lavanderia hospitalar por processo oxidativo avançado UV/H2O2. O planejamento fatorial 32 foi empregado de modo a avaliar a influência do pH e da dosagem de peróxido na eficiência do tratamento. Os experimentos de foto-oxidação foram realizados com efluentes coletados na lavander
Eng. Sanit. Ambient.. Publicado em: 01/07/2019
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3. REMOVAL OF BPA FROM LANDFILL LEACHATES USING FENTON-ADSORPTION PROCESS
The objective of this investigation was to identify and quantify the presence of Bisphenol-A (BPA) in raw and treated leachates with the Fenton-adsorption process. BPA is used as a monomer to produce epoxy resins and it is a compound classified as endocrine disruptor. For this reason, it is important to quantify its presence in effluents that will be dispose
Quím. Nova. Publicado em: 27/05/2019
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4. FOTOCATÁLISE MEDIADA POR TiO2 NO ESTADO NANOPARTICULADO: REVISÃO DA REATIVIDADE PELO CONCEITO DE TRAPS E ALGUMAS APLICAÇÕES EM QUÍMICA ANALÍTICA
TiO2 has been used as a white pigment and studied since the first decades of the XX century for the undesirable chalking of outdoor paintings exposed to sunlight. Since the first report of Honda and Fujishima (1972) of the water splitting by the harvesting of sunlight on a n-type single crystal TiO2 electrode, the engagement of researchers with the field has
Quím. Nova. Publicado em: 02/05/2019
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5. Reestruturação na forma do tratamento de efluentes têxteis: uma proposta embasada em fundamentos teóricos
Resumo As indústrias têxteis utilizam grandes quantidades de água nos processos de tingimento e beneficiamento das fibras, gerando volumes elevados de efluentes contendo corantes, surfactantes, íons inorgânicos, agentes umectantes, entre outros. O principal impacto ambiental desses efluentes está relacionado com a absorção de luz no meio aquático,
Gest. Prod.. Publicado em: 01/04/2019
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6. Zinc Ferrite Nanoparticles via Coprecipitation Modified Method: Glycerol as Structure Directing and Stabilizing Agent
Coprecipitation is one of the most practical methods used to synthesize ferrite nanoparticles. Fine characteristics of these materials can be improved by means of a series of modifications in the synthesis method. In this paper we present a study of influence of glycerol as structure directing and stabilizing agent in the synthesis of zinc ferrite nanopartic
J. Braz. Chem. Soc.. Publicado em: 2019-04
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7. Acute ecotoxicity on Daphnia magna to evaluate effluent samples of Kraft pulp mill treated by UV/H2O2 process
Resumo A indústria de papel e celulose está entre as que mais consome água no mundo, gerando grandes volumes de efluentes. O processo Kraft produz efluentes com elevada DBO, DQO, sólidos suspensos, teor de lignina e uma mistura complexa de compostos potencialmente tóxicos, os quais necessitam de tratamento para posterior descarte no meio ambiente. Os pr
Rev. Ambient. Água. Publicado em: 11/03/2019
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8. Associação do tabagismo com biomarcadores REDOX e fatores de risco cardiometabólicos em idosos
Resumo Introdução O tabagismo constitui a principal causa de morte evitável no mundo e é considerado um importante fator de risco para as doenças cardiovasculares (DCV). Objetivo Verificar a associação do tabagismo com sexo, metabolismo redox e fatores de risco cardiometabólicos de 381 idosos da Estratégia Saúde da Família de Porto Alegre/RS.
Cad. saúde colet.. Publicado em: 21/02/2019
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9. Degradación de un efluente textil real asistida por Fe/PVA y materiales residuales magnéticos
ABSTRACT Organic compounds present on industrial wastes are mostly resistant to conventional biological and chemical treatments. Textile industry has presented several environmental problems mainly related to the use and management of water resources. It has a high consumption of potable and underground water in its processes. These wastewaters are one of th
Matéria (Rio J.). Publicado em: 19/07/2018
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10. Metabolic syndrome components are associated with oxidative stress in overweight and obese patients
ABSTRACT Objective: The aim of this study is to evaluate the influence of the body mass index (BMI) and the metabolic syndrome (MetS) parameters on oxidative and nitrosative stress in overweight and obese subjects. Subjects and methods: Individuals were divided into three groups: the control group (G1, n = 131) with a BMI between 20 and 24.9 kg/m2, the ove
Arch. Endocrinol. Metab.. Publicado em: 17/05/2018
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11. FOTOELETROCATÁLISE EM SEMICONDUTORES: DOS PRINCÍPIOS BÁSICOS ATÉ SUA CONFORMAÇÃO À NANOESCALA
The science of semiconductors, essential in electronics, is pivotal also for the most active research fields of environmental science and engineering today - the development of solar energy conversions and advanced oxidation processes, exemplified by the harvesting of sun daylight to produce electric energy, environmentally friendly fuels and to clean up wat
Quím. Nova. Publicado em: 2018-03
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12. The Evolving Role of Erythropoietin in Lung of Irradiated Rats
ABSTRACT The aim of the present study is to evaluate the possible curative effect of erythropoietin (EPO) on radiation-induced damage to the lung and its renin angiotensin system. EPO (200 U/100g) was i.p. injected to male rats one hour post 6 Gy whole body gamma irradiation. The animals were sacrificed after 14 days post irradiation. Irradiation induced sig
Braz. arch. biol. technol.. Publicado em: 17/08/2017