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

Subject Areas : The Application of Chemistry in Environment

Received: 2012-10-24 Accepted : 2012-11-10 Published : 2013-02-19

Keywords: bentonite, Adsorption, 4-Chloro-2-Nitrophenol,

Abstract :

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 4C2NP 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.