View Solution For Langmuir adsorption isotherm, which is correct? View Solution the Langmuir adsorption isotherm is deduced using the assumption. View Solution Exams IIT JEE NEET UP Board Bihar Board CBSE Free
Adsorption isotherm. It represent the vartiation the moss of the gas adsorbed per gram of the adsorbent with pressrue at constant temperature.
The case \(0< \hat{b} < 1\) corresponds to a normalized breakthrough curve related to Langmuir type adsorption isotherm and \(\hat{b} = 0\) represents a normalized breakthrough curve corresponding to a linear isotherm, whereas for \(\hat{b} < 0\), an unfavorable adsorption occurs ...
6 Langmuir isotherm of the adsorption of PNP onto DA sample and the operation lines of the experiments carried out with 0.1, 0.25 and 0.5 g c Fig. 5 Adsorption kinetics for PNP onto the ACs for a 0.1, b 025 and c 0.5 g of solid, together with the fitting of the experimental data ...
In reality, the shape of the isotherm is smooth where a comparable step in the adsorption isotherm is S-shaped. Thus, the gap in COP is expected to be filled if the real shape of the isotherms is considered. A more realistic shape of the isotherm can be obtained from the DFT model by...
In order to include the isotherm slope dependency on the modifier concentration a power function was used as described elsewhere [33], [38]. In the adsorption model an initial condition (at t=0) and boundary conditions for the inlet and outlet are required. The assumption for the initial ...
[13], where the concentration dependent diffusivity is structurally similar due to the slope of the isotherm term in the denominator of Eq.10. In this case either the pressure steps are reduced to achieve linearity or the nonlinear problem is solved numerically to obtain the kinetic parameters ...
Due to these problems and the lack of many multicomponent data, the purpose of the theories should be to predict multicomponent adsorption based on single (gas) adsorption isotherm data. Many engineering theories for multicomponent adsorption can be roughly divided into three categories: extensions of...
The Langmuir isotherm is qe = QbC/(1 + bC) (1) in which b is a constant related to the energy or net enthalpy of adsorption, and Q is the ultimate adsorption capacity (maximum value of qe). The Freundlich equation has the general form (2) where KF and n are constants and n > ...
50 to 100 mg of sample was first activated at 90° C. for 24 h and then backfilled with N2. The N2adsorption-desorption isotherm was then determined under liquid nitrogen (77 K) condition. The specific surface area of the material was calculated using the BET method carried by ...