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The Freundlich isotherm is typically represented as (\sf q = k \times C^{1/n}), where (\sf q) is the amount of solute adsorbed per unit mass of adsorbent, (\sf k) is the Freundlich constant, (\sf C) is the equilibrium concentration of solute in solution, and (\sf n) is the Freundlich exponent. To calculate (\sf n), you would need to plot (\sf log(q)) versus (\sf log(C)) and the slope of the linear portion of the curve will give you the value of (\sf n).
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How do you calculate KL in langmuir isotherm?
To calculate the Langmuir constant (KL) in the Langmuir isotherm model, you typically perform a nonlinear regression analysis on experimental data using the Langmuir equation: (q = \frac{{q_{max} K_L C}}{{1 + K_L C}}), where q is the adsorption capacity at a given concentration C, and (q_{max}) is the maximum adsorption capacity. The Langmuir constant (KL) can be determined by fitting the experimental data to this equation and solving for KL.
What causes isotherm lines to be irregular?
Isotherm lines can be irregular due to variations in topography, ocean currents, or changes in surface properties. These factors can create pockets of warm or cold air that deviate from the expected temperature patterns, resulting in irregular isotherm lines.
What are the differences between isobar and isotherm?
Isobar is a line on a map connecting points of equal atmospheric pressure, while an isotherm is a line on a map connecting points of equal temperature. Isobars indicate areas of high and low pressure, while isotherms show temperature variations across a region.
How can I calculate the force generated by a solenoid?
To calculate the force generated by a solenoid, you can use the formula: Force (N I)2 k / (2 g2), where N is the number of turns in the solenoid, I is the current flowing through it, k is a constant, and g is the length of the solenoid.
How do you Calculate the acceleration of a 70-kg mass on a swing if you push it with a 40-N force?
You can calculate the acceleration of the swing's mass by dividing the force applied to the swing (40 N) by the mass of the swing (70 kg). This would result in an acceleration of 0.57 m/s^2.
Why freundlich adsorption isotherm is not applicable at high pressure?
Freundlich adsorption isotherm assumes a homogeneous surface with a finite number of adsorption sites, making it unsuitable for high pressures where interactions between adsorbate molecules become significant. At high pressures, multilayer adsorption occurs, violating the assumptions of the Freundlich isotherm which fails to account for these complex interactions. As a result, Freundlich isotherm is not applicable in conditions where multilayer adsorption dominates.
What is Freundlich adsorption isotherm and Langmuir isotherm?
At a given temperature, the extent of adsorption will increase with the increase of pressure of the gas. The extent of adsorption is measured as x/m, where mi= is the mass of adsorbent and x that of adsorbate. At low pressure, x/m varies linearly with p. As per Freundlich adsorption equation Taking log both sides of the equation, we get, At low pressure, x/m=kP At high pressure, x/m=kPo This is called Freundlich adsorption isotherm at a constant temperature. Freundlich isotherm fails at high pressure and is only for physical adsorption. Langmuir isotherm is represented as x/m=ap/(1+bp) (a and b are constants) At very high pressure,(bp>>1) x/m=a/b At very low pressure,(bp<<1) x/m=ap
How do you calculate Kf constant in Freundlich isotherm?
Do a log-log of your sample values (y-axis; e.g., sorption levels), and plot that against the x-axis (e.g., concentration in solution). This will linearize your model so that you can get a regression equation (excel will do this). Use this equation to find the y-intercept. The inverse log-log of your y-intercept gives you your Kf.for more help see:Wong JPK, Wong YS, Tam NFY. 2000. Nickel Biosorption by Two Chlorella Species, C. Vulgaris (a Commercial Algae) and C. Miniata (a Local Isolate). Bioresource Technology. 73:133-137
What is the difference between the Freundlich BET and Langmuir adsorption isotherms?
There are a few differences, but the main one is that Langmuir can only be used for surfaces which are cover by only one layer of gas and the BET surface area is calculated using the multilayer model.
What is the birth name of Liv Freundlich?
Liv Freundlich's birth name is Liv Helen Moore Freundlich.
How tall is Bart Freundlich?
Bart Freundlich is 190 cm.
When was Irwin Freundlich born?
Irwin Freundlich was born in 1908.
When did Irwin Freundlich die?
Irwin Freundlich died in 1977.
What has the author Otto Freundlich written?
Otto Freundlich has written: 'Otto Freundlich' -- subject(s): Abstract Art, Art, Abstract, Exhibitions
When was Caleb Freundlich born?
Caleb Freundlich was born on December 4, 1997.
When was Liv Freundlich born?
Liv Freundlich was born on April 11, 2002.
When did Erwin Finlay-Freundlich die?
Erwin Finlay-Freundlich died in 1964.
