Adsorption of 4-Chloro-2-Nitrophenol by Raw and Modified Bentonite Using Batch Method

In this study, the adsorption of 4-chloro-2-nitro phenol (4C2NP) onto bentonite (B) and modified bentonite by tetra-butyl ammonium iodide (TAI) and cetyltrimethyl ammonium bromide (CTAB) from aqueous solutions by considering the effects of various parameters such as contact time, adsorbent dose, pH, initial concentration of 4C2NP and temperature was studied in a batch system. An optimal condition for uptake C2NP was reached at pH≈ 5.8, 1 g of raw and modified bentonite in 60 and 10 min of equilibrium time, respectively. The results showed that increasing the initial concentration of 4C2NP, leading to a gradual increase in adsorption.