Hi all,

I'm working on a project to investigate methylene blue and methyl red dye co- adsorption from aqueous solution at pH 5.0 and 8.0 using a bio-based carbon material.

I'm trying to determine the adsorption energy from the equation:

E = RTln (Cs/Ce).

Where Cs is the dye solubility.

Could anyone kindly explain how to go about finding the solubility of both dyes at the pH mentioned above and three reaction temperatures of 25, 30 and 40°C?

Thanks in anticipation.