Sorption Models
Mostrando 1-12 de 59 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. Effect of drying temperature on color and desorption characteristics of oyster mushroom
Abstract Oyster mushroom (Pleurotus ostreatus) slices were dried in a hot air dryer at three temperatures (45, 55 and 65 °C). The sorption isotherm of dried samples in the water activity (aw) range of 0.556-0.970 was also determined at three temperature levels. Moisture desorption isotherms were obtained from changes in water activities of oyster mushroom s
Food Sci. Technol. Publicado em: 2020-03
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3. SORPTION ISOTHERMS AND ISOSTERIC HEAT OF PERICARP AND ENDOSPERM TISSUES OF ARABICA COFFEE FRUIT
ABSTRACT The aim of this study was to evaluate and model the hygroscopic equilibrium and isosteric heat curves of pericarp and endosperm tissues of arabica (Coffea arabica) coffee fruit, in different temperature and relative humidity conditions. Sorption isotherms were drawn under temperatures from 20°C to 70°C and relative humidity ranging between 10% and
Eng. Agríc.. Publicado em: 2020-02
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4. Aplicação de solução semianalítica para modelagem de ensaios de sorção e difusão pura com lixiviado
RESUMO A implementação da Política Nacional de Resíduos Sólidos (Lei nº 12.305, de 2 de agosto de 2010) foi um marco para a disposição final e o tratamento de resíduos sólidos no país. A contaminação decorrente da negligência na disposição dos resíduos sólidos urbanos atinge sistemas naturais vitais para a existência humana. Torna-se, port
Eng. Sanit. Ambient.. Publicado em: 25/11/2019
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5. Kinetic Analysis of Lead Removal by Natural Hydroxyapatite from Aqueous Solution in High Concentration
The aim of this work was to study of the kinetic of Pb(II) sorption, in high lead concentration aqueous solution, by the natural hydroxyapatite (HA) and to verify whether there is a different behavior between natural and synthetic HA under different lead concentrations. Batch experiments were carried out using solutions with high lead concentration, with the
Mat. Res.. Publicado em: 30/09/2019
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6. Moisture sorption isotherms of sunflower seeds: Thermodynamic analysis
RESUMO O estudo das propriedades termodinâmicas proporciona o conhecimento da afinidade do sorvente pela água e da espontaneidade do processo de sorção, sendo importante para projetar equipamentos de secagem e predizer o comportamento higroscópico durante o armazenamento. Este trabalho visou a determinar e avaliar isotermas de equilíbrio higroscópico
Ciênc. agrotec.. Publicado em: 30/09/2019
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7. 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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8. Effect of drying temperature on color and desorption characteristics of oyster mushroom
Abstract Oyster mushroom (Pleurotus ostreatus) slices were dried in a hot air dryer at three temperatures (45, 55 and 65 °C). The sorption isotherm of dried samples in the water activity (aw) range of 0.556-0.970 was also determined at three temperature levels. Moisture desorption isotherms were obtained from changes in water activities of oyster mushroom s
Food Sci. Technol. Publicado em: 15/08/2019
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9. 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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10. Water sorption isotherms of cooked hams as affected by temperature and chemical composition
Abstract This study was focused on the determination of the chemical composition and experimentally obtaining the sorption isotherms for four samples of commercial cooked ham subjected to simulated commercial storage conditions. The isotherms were determined using the gravimetric method. The mathematical models of Guggenhein, Anderson and de Boer; Brunauer,
Food Sci. Technol. Publicado em: 13/12/2018
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11. 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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12. Competitive Adsorption of Dye Species onto Biomass Nanoporous Carbon in Single and Bicomponent Systems
ABSTRACT We first present a cost-effective approach to simultaneously dispose of rutaceae plant waste (the discarded peels of orange, finger citron, pomelo and lemon) to yield biomass nanoporous carbons (BNCs). The adsorption of orange II (OII) and acid chrome blue K (ACBK) from aqueous solutions in single and binary dye systems by four types of BNCs were st
Braz. J. Chem. Eng.. Publicado em: 2018-01