Hellow Professors. i am doing adsorption of methylene blue experiment. i monitored with uv visible spectrometer by taking 10-100ppm solution with time up to 40 min(10 min interval). but I unable to calculate Ce ie equilibrium concentration in (mg/L). anybody please help?
To calculate the Ce , you need first to perform the calibration curve on MB. The resulted équation from fitting Will be in fhe form of y=ax+b.
So your Will be Ce=y-b/a were y: absorbance; b: intercept and a: the slope
On what will the MB be adsorbed? The linearity of the absorbance is normally in a much narrower range than the one used, usually 0.5 to 15 ppm.
When testing the capacity of ACs for MB adsorption we used 500-1000 ppm and 25mg AC/250 ml MB. Reaction time 24 hours, measure the remaining MB and do the calculations.
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