Abstract
It is essential to remove 2,4-dichlorophenol (DCP) from solution. In this paper, wheat straw (WS) was modified by a cationic surfactant, cetyltrimethyl ammonium bromide (CTAB), to improve adsorption capacity for the removal of DCP from aqueous solutions in batch mode. Several experimental factors like initial pH, common salts concentration, contact time, solution temperature were evaluated. Solution pH within 4-9 was in favor of adsorption and common salts had slight effect on adsorption quantity. The adsorption capacity was up to 45.5 mg g–1 and the process was exothermic. Henry equation was better to fit the adsorption equilibrium data. DCP-loaded MWS can be regenerated by 0.1 mol L–1 NaOH. It was concluded that MWS may be good adsorbent to remove DCP from solution.
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