. Results and discussion
3.1. Adsorption isotherms
The adsorption of MB onto decomposed peat was studied for
three temperatures (35, 45 and 60 C), at a constant stirring speed
of 1.05 g units and different initial MB concentration (100–
1000 mg L1 ), in a maximum adsorption time of the 96 h. The results of adsorption agreed well with the Langmuir model for the
three studied temperatures (Figs. 1–3). The adsorption capacity
(qe) increased with the equilibrium concentration of the MB (Ce)
in solution, progressively, reaching saturation of adsorbent in all
cases. For the three temperatures studied, an adsorption time of