adsorption isotherm


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adsorption isotherm

[ad′sȯrp·shən ′ī·sō‚thərm]
(physical chemistry)
The relationship between the gas pressure p and the amount w, in grams, of a gas or vapor taken up per gram of solid at a constant temperature.
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The adsorption isotherm at 303 and 323 K goes well with the Freundlich isotherm model and isotherm at 313 K follows Langmuir model with maximum adsorption capacity of 17.4 mg/g.
Synthesis of Semi Interpenetrating Network Hydrogel [(GrA-Psy)-cl-Poly (AA)] and its Application for Efficient Removal of Malachite Green from Aqueous Solution
8 shows that the adsorption isotherm of MB on corallina elongata is the L-type (called Langmuir type), where the shape of the adsorption isotherm means that there is no strong competition between the solvent and the adsorbate to occupy the adsorption sites [33].
Characterization of the Corallina Elongata Alga and Study of its Biosorption Properties for Methylene Blue
Thus, adsorption isotherms were obtained by plotting the amount of copper adsorbed (mmol [g.sup.-1] substrate) against the equilibrium concentration (mmol) and fitted to the linear form of the Langmuir equation [15-17].
Cu (II) Chemisorption on Calcined Substrates made with an Oxidic Refractory Variable Charges Lithological Material/Quimioadsorcion de Cu (II) sobre un Sustrato Calcinado preparado con un Material Litologico Refractario de Carga Variable
The maximum adsorption capacity ([q.sub.m]) obtained for the MB dye in this work was 374.75 mg.[g.sup.-1] and is in accordance to the maximum values presented in the adsorption isotherms (as show in Figure 4).
ACTIVATED CARBON FROM BAMBOO (Bambusa vulgaris) FOR METHYLENE BLUE REMOVAL: PREDICTION TO THE ENVIRONMENT APPLICATIONS/CARVAO ATIVADO A PARTIR DE BAMBU (Bambusa vulgaris) PARA REMOCAO DE AZUL DE METILENO: PREDICOES PARA APLICACOES AMBIENTAIS
where R is the gas constant (8.314 J [K.sup.-1] [mol.sup.-1]), T is the absolute temperature (K), and K[degrees] is the adsorption isotherm constant.
An Experimental Study on the Adsorption and Desorption of Cu(II) in Silty Clay
The results are also in good agreement with adsorption isotherm shown in the above section.
Adsorption of Anionic Surfactants onto Alumina: Characteristics, Mechanisms, and Application for Heavy Metal Removal
Langmuir adsorption isotherm is based on monolayer adsorption of metal ions on the surface of agrowastes, and energy of adsorption system is considered constant.
Study of Isothermal, Kinetic, and Thermodynamic Parameters for Adsorption of Cadmium: An Overview of Linear and Nonlinear Approach and Error Analysis
On analysis of the various adsorption isotherms, the adsorption follows the Langamuir isotherm model, thereby confirming the homogeneous surface of the adsorbent and monolayer formation.
Removal of Lead from Water Using Calcium Alginate Beads Doped with Hydrazine Sulphate-Activated Red Mud as Adsorbent
Langmuir and Freundlich adsorption isotherm and their parameters are presented in Figure 11, Figure 12, and Table 3.
Synthesis of Zeolites Materials Using Fly Ash and Oil Shale Ash and Their Applications in Removing Heavy Metals from Aqueous Solutions
The adsorption isotherms of the powder samples were determined through the indirect static method (Crapiste & Rotstein, 1982) in BOD (Biochemical Oxygen Demand) chamber regulated at temperatures of 20, 30 and 40 [degrees]C, with measurements of water activity ([a.sub.w]) in hygrometer (Aqualab 3TE, Decagon) in variation range of approximately 0.3-0.9.
Adsorption isotherms of the red mombin powder produced in spouted bed dryer/Isotermas de adsorcao do po de seriguela produzido em secador de leito de jorro
Adsorption isotherms relates the adsorbate--adsorbent interaction at equilibrium.
Removal of malachite green from aqueous solution using activated nerium oleander leaves
The adsorption amount at the equilibrium state (W) was calculated by (1) based on the adsorption isotherms. On the basis of the Langmuir adsorption isotherm formula, the equation of state for the one-component adsorption can be represented as follows:
A Simple Incorporation Route of Tris(8-hydroxyquinoline)aluminum(III) into Transparent Mesoporous Silica Films and Their Photofunctions

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