Ozone Generation
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Determinação da cinética de ozonização de efluente têxtil na remoção de cor e matéria orgânica
RESUMO A oxidação do afluente e efluente têxtil foi feita em batelada durante 5 e 2 h, respectivamente. A geração de h-1 ozônio utilizada foi de aproximadamente 1085,25 mgO3 com vazão de ar de 8 L min-1. Foram determinados os seguintes parâmetros físico-químicos: temperatura, pH, turbidez, condutividade, cor verdadeira, alcalinidade a bicarbonato,
Matéria (Rio J.). Publicado em: 20/05/2019
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2. Effect of ozone oxidative preconditioning in preventing early radiation-induced lung injury in rats
Ionizing radiation causes its biological effects mainly through oxidative damage induced by reactive oxygen species. Previous studies showed that ozone oxidative preconditioning attenuated pathophysiological events mediated by reactive oxygen species. As inhalation of ozone induces lung injury, the aim of this study was to examine whether ozone oxidative pre
Braz J Med Biol Res. Publicado em: 27/09/2013
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3. Statistical evaluation of mature landfill leachate treatment by homogeneous catalytic ozonation
This study presents the results of a mature landfill leachate treated by a homogeneous catalytic ozonation process with ions Fe2+ and Fe3+ at acidic pH. Quality assessments were performed using Taguchi's method (L8 design). Strong synergism was observed statistically between molecular ozone and ferric ions, pointing to their catalytic effect on •OH generat
Brazilian Journal of Chemical Engineering. Publicado em: 2010-12
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4. SIMULATION OF ATRAZINE DEGRADATION BY IN SITU ELECTROCHEMICALLY GENERATED OZONE FOR GROUNDWATER REMEDIATION / SIMULAÇÃO DA DEGRADAÇÃO DE ATRAZINA COM OZÔNIO GERADO ELETROQUIMICAMENTE IN SITU PARA REMEDIAÇÃO DE ÁGUAS SUBTERRÂNEAS
The impact of pesticides on the quality of groundwater has been the subject of scientific and public health concerns in the entire planet, especially in areas where groundwater is mainly used for human consumption. The intensive use of pesticides in agriculture and the high persistence of several of these chemicals have required a rigorous control of possibl
Publicado em: 2008
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5. Nova abordagem de ozonizadores para tratamento de água e esgoto por descarga corona / Water and wastewater treatment ozonizer with corona discharge-new approach
Este trabalho traz como contribuição o início sistemático de estudos para o projeto e execução de ozonizadores dedicados a estações de tratamento de água e esgotos domésticos com tecnologia totalmente nacional. O objetivo é desenvolver um sistema que apresente custo reduzido de fabricação, implantação, manutenção e também boa eficiência na
Publicado em: 2007
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6. Electrochemistry and green chemical processes: electrochemical ozone production
After an introductory discussion emphasising the importance of electrochemistry for the so-called Green Chemical Processes, the article presents a short discussion of the classical ozone generation technologies. Next a revision of the electrochemical ozone production technology focusing on such aspects as: fundamentals, latest advances, advantages and limita
Química Nova. Publicado em: 2003-12
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7. Desenvolvimento do precesso de reduÃÃo de Ãcido nitroso por Ãcido amino sulfÃmico. Modelagem cinÃtica associada à transferÃncia gÃs-lÃquido
The combustion of organic products, in particular, the natural gas, leads to the generation of nitrogenated oxides (NOx = NO and NO2; N2O) from both sources, the nitrogenous originated from the combustion air and nitrogenated compounds present in the fuel. NOx emissions can damage the human health and environment. They have been contributing widely to the fo
Publicado em: 2003
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8. EVALUATION OF THE GAS LOAD INFLUENCE ON AN AUTOMOTIVE AIR CONDITIONING SYSTEM / AVALIAÇÃO DA INFLUÊNCIA DA CARGA DE GÁS EM UM SISTEMA DE CONDICIONAMENTO DE AR AUTOMOTIVO
The modern automotive technology reaches considerable progress`s in the mechanical aspect as in the functional, with these technological advances, the biggest progress was made in the structure of the automobiles and in the air conditioning systems. Considering the importance of the use of refrigerant, the present work is developed, because the refrigerant g
Publicado em: 2002
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9. Investigating antibody-catalyzed ozone generation by human neutrophils
Recent studies have suggested that antibodies can catalyze the generation of previously unknown oxidants including dihydrogen trioxide (H2O3) and ozone (O3) from singlet oxygen (1O\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \setlength{\oddsidem
The National Academy of Sciences.
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10. Metabolite-initiated protein misfolding may trigger Alzheimer's disease
Anfinsen showed that a protein's fold is specified by its sequence. Although it is clear why mutant proteins form amyloid, it is harder to rationalize why a wild-type protein adopts a native conformation in most individuals, but it misfolds in a minority of others, in what should be a common extracellular environment. This discrepancy suggests that another e
National Academy of Sciences.
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11. Cellular and Subcellular Localization of Endogenous Nitric Oxide in Young and Senescent Pea Plants12
The cellular and subcellular localization of endogenous nitric oxide (NO˙) in leaves from young and senescent pea (Pisum sativum) plants was studied. Confocal laser scanning microscopy analysis of pea leaf sections with the fluorescent probe 4,5-diaminofluorescein diacetate revealed that endogenous NO˙ was mainly present in vascular tissues (xylem and phlo
American Society of Plant Biologists.