Adsorbent Langmuir Freundlich
  qmax (mg/g) b (L/mg) R2 Kf  (mg/g) n R2
Bentonite 40.4 0.0167 0.9873 2.06 9.0432 0.9373
CTAB-MBn 210 0.246 0.9993 111.877 2.1656 0.9467
Table 5: Adsorption isotherm parameters for the adsorption of congo red on clays.
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