Flow Batch System
Mostrando 1-12 de 55 artigos, teses e dissertações.
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1. Carbon Dots from Pilosocereus gounellei for Fluorimetric Determination of Tannin in Tea Using a Flow-Batch System
In this study, xiquexique (Pilosocereus gounellei) native endemic cactus from the Brazilian semiarid was used for the first time as a natural carbon source (“green precursor”) for the synthesis of highly fluorescent carbon dots (CDs). These CDs were successfully used to develop a fast, low-cost, eco-friendly fluorescence method for the determination of t
Journal of the Brazilian Chemical Society. Publicado em: 2023
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2. TITULADOR AUTOMÁTICO EM FLUXO-BATELADA UTILIZANDO UM HARDWARE DE CÓDIGO FONTE ABERTO ARDUINO
This work describes the development of an automatic titrometric method in flow-batch with potentiometric detection using alternative and easily accessible materials. Arduino board and its modules, solenoid valves to control the flow rate, peristaltic pump to propel and suction fluids and tubes of inert material to connect the different parts of the Flow-Batc
Quím. Nova. Publicado em: 2021-03
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3. Sistema integrado com microalgas e wetland construído de fluxo vertical no tratamento de efluentes urbanos
RESUMO O sistema integrado com microalgas (MA) e wetland construído de fluxo vertical (wetland construído pós-microalgas - WCPMA) foi aplicado para a realização de ensaios de tratamento de efluentes no campus da Universidade de Santa Cruz do Sul, no Rio Grande do Sul (UNISC-RS). Águas negras e amarelas foram alimentadas para esse sistema em regime de b
Eng. Sanit. Ambient.. Publicado em: 30/05/2019
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4. DETERMINAÇÃO RÁPIDA E SIMPLES DE CITRATO DE SILDENAFILA (VIAGRA® E GENÉRICOS) EMPREGANDO ELETRODO IMPRESSO DE CARBONO EM SISTEMAS FIA E BIA COM DETECÇÃO AMPEROMÉTRICA
This work presents two amperometric methods for Sildenafil Citrate (SC) determination in erectile dysfunction drugs (Viagra® and Generics), using Batch Injection Analysis (BIA) and Flow Injection Analysis (FIA) systems with a cell for Screen Printed Electrodes (SPE). In Britton- Robinson buffer solution (pH 2), the SC presented an irreversible anodic peak a
Quím. Nova. Publicado em: 2017-08
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5. PERFORMANCE INDICES TO DESIGN A MULTICOMPONENT BATCH DISTILLATION COLUMN USING A SHORTCUT METHOD
AbstractIn this paper, three quality or performance indices (Luyben's capacity factor, total annual costs, and annual profit) were applied for the design of a batch distillation column working at variable reflux. This work used the Fenske-Underwood-Gilliland short-cut method to solve a problem of four components (benzene, toluene, ethyl-benzene, and ortho-xy
Braz. J. Chem. Eng.. Publicado em: 2015-06
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6. Using webcam, CdTe quantum dots and flow-batch system for automatic spectrofluorimetric determination of N-Acetyl-L-cysteine in pharmaceutical formulations
Neste trabalho é proposta a combinação de um sistema flow-batch, pontos quânticos (QDs) e de uma webcam como detector para determinação espectrofluorimétrica automática de N-acetil-L-cisteina (NAC) em formulações farmacêuticas. O NAC gera interações superficiais com os QDs, que resultam no aumento proporcional da intensidade de fluorescência co
J. Braz. Chem. Soc.. Publicado em: 2014-09
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7. A supervision and control tool based on artificial intelligence for high cell density cultivations
High cell density cultivations of recombinant E. coli have been increasingly used for the production of heterologous proteins. However, it is a challenge to maintain these cultivations within the desired conditions, given that some variables such as dissolved oxygen concentration (DOC) and feed flow rate are difficult to control. This paper describes the sof
Braz. J. Chem. Eng.. Publicado em: 2014-06
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8. Sistema fluxo-batelada monossegmentado: determinação espectrofotométrica de boro em plantas. / Monosegmented flow-batch system: Spectrophotometric determination of boron in plants.
Esse trabalho introduz o conceito fluxo-batelada monossegmentado (monosegmented flow-batch - MSFB). Esse sistema combina as características favoráveis do sistema fluxo-batelada (flow-batch analysis FBA) e do fluxo monossegmentado (monosegmented flow analysis MSFA), permitindo o uso do FBA em reações de cinética lenta sem prejuízo na sensibilidade ou na
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2012
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9. Especiação redox de crômio em amostras de solos contaminados / Redox especiation of chromium in contaminated soil samples
Chromium and its compounds are employed in various industrial processes, and these activities are responsible for the disposal of significant amounts of materials containing this element in the environment. Due to the known toxic feature of Cr(VI) in biological systems, the determination of chromium species has acquired great importance in environmental chem
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/03/2012
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10. DESENVOLVIMENTO DE UM PROCESSO CONTÍNUO PARA PRODUÇÃO DE BIODIESEL A BAIXAS TEMPERATURAS. / DEVELOPMENT OF A CONTINUOUS PROCESS FOR PRODUCING BIODIESEL AT LOW TEMPERATURES.
Biodiesel has emerged worldwide as a promising alternative to oil-derived mineral fuels. It is biodegradable, renewable, obey to the carbon cycle and can be defined as fatty acid monoalquyl esters derived from renewable sources, such as vegetable oils and animal fats. It can be produced from a transesterification reaction, in which there is the transformatio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2011
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11. Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems
Cu (II) removal equilibrium from aqueous solutions using calcined clays "Bofe" and "Verde-lodo" has been studied by batch and fixed-bed in static and dynamic systems, respectively. Analyses were performed for physicochemical characterization of clays using the techniques: X-ray fluorescence (XRF), thermogravimetry (TG), N2 adsorption (BET) and Cationic Excha
Materials Research. Publicado em: 29/11/2011
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12. Desidratação parcial de tomate cereja em secador de bandejas vibradas com reciclo
In this essay, it has been analyzed the partial dehydration of oval cherry tomato Lycopersicum sp. Mill, by using a vibrated tray dryer with recycle until the tomatoes reached 15% of its initial water content what represents 70,19% of humidity in wet basis or 2,35 kg of water/kg of dry mass in dry basis. The dryer used consists basically of a vertical dryer
Publicado em: 2011