The results revealed that
the maximum adsorption capacities were 20.2, 26.75 and 38.1 mg/g from the initial Mn(II) concentration
(145 mg/L) at pH 5, adsorbent mass (0.2 g/1.0 L), and contact time (60 min) at different
temperatures, 298, 308 and 318 K, respectively.