Sorption (adsorption, desorption) isotherms
Modelling the effect of temperature on the water sorption isotherms of chitosan films
... Water sorption isotherms represent the relationship of the equilibrium moisture content of a food product and the relative humidity at a particular temperature (Muzaffar & Kumar, ...moisture ...
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Moisture dynamic sorption isotherms and thermodynamic properties of parchment specialty coffee (Coffea arabica L.)
... determine sorption isotherms at temperatures of 25, 30, and 40 °C and water activities of ...the sorption isotherms on water activity and temperature; and 3) determine the net isosteric heat ...
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Determination of the distribution coefficient (kd) of benzo(a)pyrene in soil using sorption isotherms.
... the sorption isotherm model. The sorption curves acquired for benzo(a)pyrene were of the S-type, probably due to the water/methanol experimental ...The sorption curves allowed calculation of the ...
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Comparative study of the influence of minerals in gas sorption isotherms of three coals of similar rank
... adsorption, along with other characterisation requirements need to be carried out, especially when core samples are limited in quantity for tests, such as densimetric ones, it seems plausible that the calculated weighted ...
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Increasing Sorption Isotherms Accuracy: Weibull Modelling and Linear Regression
... the sorption isotherm proceedings, consisting in the following 11 steps: (1) Placing the whole system into an isothermal bath; (2) Purging the whole system with helium; (3) Estimating reference cell and sample ...
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Quím. Nova vol.31 número6
... the sorption isotherms of Chilean papaya in the temperature range of 5 to 45 ºC and a w range of ...net sorption heat decreased with an increase in equilibrium moisture ...net sorption heat ...
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Caqui em pó: influência de aditivos e do método de secagem
... shows sorption isotherms for pure persimmon powder at different temperatures and it is possible to observe that there was no marked difference between the ...the isotherms are influenced by the ...
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Kinetic modeling of water sorption by roasted and ground coffee
... water sorption isotherms and the isosteric heat, different conditions of temperature and relative humidity were analyzed using the dynamic method at 25ºC ...of sorption for the fine particle size ...
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Enthalpy-entropy compensation based on isotherms of mango
... water sorption [1,16] is enthalpy-entropy compensation or isokinetic theory, which was originally applied by BELL ...water sorption under varying conditions, such as drying processes ...water ...
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Moisture desorption isotherms of cucumber seeds: modeling and thermodynamic properties
... or sorption isotherms are important in order to define dehydration limits of the product, estimate moisture content alterations under environment conditions and to acquire moisture content values for safe ...
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WATER ADSORPTION ISOTHERMS AND ISOSTERIC SORPTION HEAT OF SPRAY-DRIED AND FREEZE-DRIED DEHYDRATED PASSION FRUIT PULP WITH ADDITIVES AND SKIMMED MILK
... The sorption isotherms of the samples studies were type III, according to Brunauer’s ...of sorption in relation to decreasing moisture content and the values of different samples were all similar, ...
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Determination of desorption isotherms, latent heat and isosteric heat of pequi diaspore Kelly A. de Sousa
... Water activity studies can be developed using sorption isotherms. The isotherm is a curve that describes, at a specific moisture content, the equilibrium relationship of an amount of water sorbed by the ...
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Thermodynamic properties of Buriti (Mauritia flexuosa) tree gum
... desorption isotherms from buriti tree gum (BG) were obtained at different temperatures (25 to 55 °C) in a water activity range of ...The isotherms were classified as type ...product’s sorption ...
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Thermodynamic properties of water desorption in Buchenavia capitata (Vahl) Eichler
... The sorption isotherms, which relate the hygroscopic equilibrium moisture content of a product with the relative humidity of the surrounding air (Costa et ...
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Water adsorption isotherms of coffee blends / Isotermas de adsorção de água em blends de café
... Sorption isotherms are indispensable to determine andanalyze water sorption changes during storage and can be expressed by mathematical models,which differ in their theoretical or empirical basis and ...
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Isotherms and isostatic heat of foam-mat dried yellow mombin pulp
... of isotherms in foods. Sorption isotherms can be used to predict the drying time and changes of moisture that may occur when the product is mixed with others or packed, indicating the final stability ...
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Desorption isotherms of Lactuca sativa seeds
... The characteristic curves of the equilibrium moisture content are referred to as sorption isotherms, which correlate the equilibrium moisture content of a product with relative humidity (Resende et al., ...
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Polímeros vol.27 número1
... Films and sheets composed by poly (lactic acid) (PLA)/thermoplastic starch (TPS) and TPS/gelatin blends have already been produced and characterized in the literature. However, materials produced with these three ...
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Study of adsorption isotherms of green coconut pulp
... absorbed, isotherms are called adsorption isotherms, otherwise they are called desorption isotherms (STRUMILLO; KUDRA, ...classiied sorption isotherms into ive general groups based upon ...
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Quím. Nova vol.36 número8
... equilibrium sorption measurements, indicating that pseudo-second-order kinetics provi- ded a good description of the biosorption ...The sorption rate constant increased as the initial concentration of ...
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