Comparative Study for the Removal of Oxadiazon from Aqueous Solutions by Adsorption on Chitosan and Activated Carbon

摘要

In the present investigation, chitosan and activated carbon are used as adsorbents for the removal of oxadiazon from aqueous solutions. The analyzing system was a gas chromatograph equipped with mass selective detector. The equilibrium studies are systematically carried out in a batch process, covering various process parameters that include agitation time, adsorbent dosage, and pH of the aqueous solution. Also, the relationship between extraction of oxadiazon and volume of aqueous/organic phase as well as the effect of inorganic salt were investigated. Adsorption behavior was found to follow Freundlich and Langmuir isotherms. The adsorption mechanism is described by a pseudo-second-order kinetics.