Adsorption Mathematical Models
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. FITTINGS OF ADSORPTION ISOTHERM MODELS AND THERMODYNAMIC PROPERTIES OF URUNDAY SEEDS
ABSTRACT This study aimed to obtain and evaluate thermodynamic properties and hygroscopic equilibrium isotherms of urunday seeds as a function of air relative humidity and temperature, as well as identify the best-fitted mathematical models for adsorption phenomenon. A static-gravimetric method was used to obtain hygroscopic equilibrium moisture content. See
Eng. Agríc.. Publicado em: 2020-06
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2. INFLUENCE OF ALBUMIN ON GUAVA PULP POWDER OBTAINED BY FOAM-MAT DRYING
ABSTRACT Guava is a fruit that stands out for its aroma, intense flavor, vitamins, and minerals. Its availability as a powdered food enhances its commercial applications. This study aimed to evaluate mathematical models for adsorption isotherms and determine the properties and flowability of guava pulp powder obtained by foam-mat drying. The models of GAB, B
Eng. Agríc.. Publicado em: 2020-06
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3. Sorption isotherms of Brazil nuts
RESUMO O entendimento dos fenômenos de sorção de água em sementes de castanheira do Brasil permitirá manejar adequadamente esse produto principalmente no que se refere às condições adequadas para um armazenamento seguro. Assim, objetivou-se determinar as isotermas de sorção (dessorção e adsorção) de água de castanha do Brasil, ajustando-se dif
Rev. bras. eng. agríc. ambient.. Publicado em: 09/09/2019
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4. MATHEMATICAL MODELING AND HYSTERESIS OF SORPTION ISOTHERMS FOR PADDY RICE GRAINS
ABSTRACT Knowledge on sorption isotherms is important for predicting drying and storage processes of a product. A sorption isotherm can be generated from two processes: desorption and adsorption. The lag between these two curves is called hysteresis. Static method was used to obtain the equilibrium moisture content of paddy rice grains, in different temperat
Eng. Agríc.. Publicado em: 12/08/2019
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5. Use of sweet ‘Pêra’ peel as an adsorbent in the treatment of textile effluents
RESUMO O lançamento de águas residuárias industriais em corpos aquáticos, sem o devido tratamento, pode causar danos severos ao meio ambiente e à saúde humana. O objetivo deste estudo foi realizar a secagem da casca de laranja cultivar Pêra (Citrus sinensis L. Osbeck) e avaliar a viabilidade do seu uso como biossorvente para remoção de um corante di
Rev. bras. eng. agríc. ambient.. Publicado em: 12/08/2019
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6. HIDROGÉIS NANOCOMPÓSITOS DE POLISSACARÍDEO COM ZEÓLITA: AVALIAÇÃO DO PROCESSO DE ADSORÇÃO DO PESTICIDA PARAQUAT
In this work, nanocomposites formed from the natural polymer carboxymethylcellulose in combination with the polyacrylamide polymer and zeolite were obtained and characterized in relation to pesticide sorption capability. Hydrogels are three-dimensional network with large capacity of water or biological fluid adsorption. They have biocompatibility, biodegrada
Quím. Nova. Publicado em: 2018-04
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7. Modelling the effect of temperature on the water sorption isotherms of chitosan films
Abstract The interaction of the water molecules from the environment with foods and other materials can be evaluated using sorption isotherms. Films and biodegradable films are susceptible to changes in their functional characteristics due to adsorbed water. The amount of moisture that biodegradable films can adsorb depends on the temperature, relative humid
Food Sci. Technol. Publicado em: 21/07/2016
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8. MATHEMATICAL MODELING OF BATCH ADSORPTION OF MANGANESE ONTO BONE CHAR
Abstract The present study investigated the dynamics of batch adsorption of manganese onto bone char by using two distinct mathematical formulations: the diffusion model and the shrinking core model. Both models assumed spherical particles and adequately described the transient behavior of metal adsorption under changing operating conditions. Comparatively,
Braz. J. Chem. Eng.. Publicado em: 2016-06
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9. ADSORPTION OF THE DYE REACTIVE BLUE 5G IN RETORTED SHALE
Abstract In this study the influence of the volumetric flow rate and feed concentration was investigated for the adsorption of the reactive dye Blue 5G. Experiments were carried out in a bed packed with retorted shale, at 30 ºC. The ranges investigated were flow rate 2 -10 mL/min and the feed concentration 13-105 mg/L. Mathematical models were used to repre
Braz. J. Chem. Eng.. Publicado em: 2015-03
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10. Mathematical modeling of supercritical fluid extraction of oil from canola and sesame seeds
Mathematical modeling of supercritical fluid extraction of oil from canola and sesame seeds with a two-phase model was performed in this work. A model based on differential mass balance was used to correlate the experimental data. Different adsorption isotherm models (Henry, Freundlich and Brunauer, Emmet and Teller (BET)) were used to describe the equilibri
Braz. J. Chem. Eng.. Publicado em: 2013-03
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11. Comparison of adsorption equilibrium and kinetic models for a case study of pharmaceutical active ingredient adsorption from fermentation broths: parameter determination, simulation, sensitivity analysis and optimization
Mathematical models for a batch process were developed to predict concentration distributions for an active ingredient (vancomycin) adsorption on a representative hydrophobic-molecule adsorbent, using differently diluted crude fermentation broth with cells as the feedstock. The kinetic parameters were estimated using the maximization of the coefficient of de
Braz. J. Chem. Eng.. Publicado em: 2012-09
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12. Powder mombin (Spondias mombin L.) atomized: Physical, physicochemical and sensory evaluation of the hygroscopic behavior / Pà de cajà (Spondia mombin l.) atomizado: caracterizaÃÃo fÃsicas, fÃsico-quÃmicas, sensoriais e avaliaÃÃo do comportamento higroscÃpico
The hog plum is a fruit that has good physical-chemical and sensory properties, which give it great acceptance by consumers and industry, and presents excellent nutritional quality. It has sugars, vitamin A and C. In this context, this study aimed to apply the process of atomization in hog plum pulp, using two experimental designs, analyzing the process vari
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2011