Adsorption equilibrium is critical in the adsorption process because the equilibrium data are the primary element for fitting the isotherm model. Many factors, including solution pH, temperature, the initial concentration of heavy metals, adsorbent dose, and coexisting ions can influence the adsorption ...
It is observed that based on the literature reviewed, it was found that the adsorption equilibrium data of cationic dyes and anionic dyes were well defined with the Langmuir model. Additionally, in the case of the adsorption of proteins, antibiotics and heavy metal ions, the Langmuir model is ...
Adsorption of Cd (II), Cu (II), Ni (II), and Zn (II) from aqueous solutions on anaerobically digested sludge has been investigated. Experimental data has been fit to Langmuir, Freundlich, and Redlich-Peterson isotherms to obtain the characteristic parameters of each model. Based on the maxim...
Adsorption isotherm and linear driving force kinetics have been included in a reactor model. Model predictions are in agreement with breakthrough as well as regeneration experiments. 展开 关键词: CO2 adsorption H2O adsorption Sorption-enhanced water–gas shift Potassium-promoted hydrotalcite Adsorption ...
Then, the parameter n is responsible for the shape of the function f(E) and represents the heterogeneity of the solid. Among the models generated by the integral formulation of adsorption, Sips, Radke-Prausnitz, Dubinin-Radushkevich, and Tóth models stand out. Tóth’s model, under the terms...
Applicationofisotherm,kineticandthermodynamicmodelsfortheadsorptionof nitrateionsongraphenefromaqueoussolution PandianGanesan,RamakrishnanKamaraj,SubramanyanVasudevan* CSIR–CentralElectrochemicalResearchInstitute,Karaikudi630006,India 1.Introduction Inorganicanionsareofgreatimportancesincethesearetoxic andharmfultohumansandanima...
A new analytical isotherm equation is derived to describe the adsorption of gases on energetically heterogeneous surfaces. It is assumed that the local isotherm for a specific site is given by the Jovanovic model, and the distribution of energetically different sites is represented by a modified ...
for each parameter were used to evaluate the data. The modeling results showed that non-linear Langmuir model could fit the data better than others, with relatively higher r2 values and smaller S.E. The linear Langmuir model had the highest value of r2, however, the maximum adsorption ...
Clay of Gulbarga region, Karnataka, India was evaluated as adsorbent for Cu(II). Fritz-Schluender adsorption isotherm gave the best fit to the experimental data. Langmuir adsorption capacity of the clay was found to be 31 mg Cu(II)/g. Cation exchange capacity of the clay was found to be...
A simple isotherm model has been developed for the type-5 equilibrium adsorption systems by considering the effects of both primary and secondary adsorptive sites. The model was applied to interpret experimental data describing water vapor adsorption capacities of four activated carbon adsorbents for rela...