Experimental q (mg g-1) Langmuir Freundlich
  qmax (mg g-1) b (L mg-1) RL R2 KF [(mg g-1/ (mg L-1)1/n] 1/n R2
239.54 227.27 0.023 0.18 0.9883 78.16 0.159 0.9101
Table 2: The Langmuir and Freundlich isothermsmodel constants, and their respective correlation coefficients R2 for the sorption of crystal violet from aqueous solution by OCMCTS.