C e / mol/L q e / mol/g This Journal is © The Royal Society of Chemistry 2002 Figure S1. Adsorption isotherm of 2-chlorophenol on RHA at room temperature of 23 0 C
y = x y = x /C e (L mol -1 ) 1/q e (g mol -1 ) Phenol Resorcinol Figure S2a. The graphical representation of Langmuir isotherm for phenol and resorcinol obtained at 23 0 C.
y = x E+005.E+061.E+072.E+07 3.E+07 1/C e (L mol -1 ) 1/q e (g mol -1 ) Figure S2b. The graphical representation of Langmuir isotherm for 2- chlorophenol obtained at 23 0 C.
y = x y = x y = x log C e log (q e ) 2-Chlorophenol Phenol Resorcinol Figure S3. The graphical representation of Freundlich isotherm for phenol, resorcinol and 2-chlorophenol obtained at 23 0 C.
50 o C Figure S4. Effect of temperature on reaction between 1.0g of RHA and 5.0 x M pyrogallol (filled symbols) and 5.0 x M pyrocatechol (open symbols).