I am doing dye removal experiment and need to calculate Qmax value from Langmuir Equation, Kindly help me with example .
For the Langmuir Isotherm model, from the experiment you have:
C0 (the initial concentration of the substance in solution (mg/L)),
Ce (the final concentration of the substance in solution after adsorption (mg/L))
Then calculate qe (the equilibrium concentration on the adsorbent (mg g-1)) from the equation:
(C0-Ce)*V/W (V is the volume of solution in L, w is the mass of adsorbent in g)
Then Langmuir is the plot of Ce versus Ce/qe.
From here you get a slope within the linear equation of y= mx+b from Microsoft Excel or OriginPro.
Finally, replace the parameters of the Langmuir equation in the linear equation which gives you: 1/qmax = slope, 1/qmaxKL = Intercept
So, your qmax is 1/slope
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