Adsorption of 2,4-D on Carbonized Chest Nut Shell
Physical Science International Journal · pp. 531–540 · Published 23 Jul 2013
Abstract
The adsorption of 2,4-D (dichlorophenoxyacetic acid) in 4x10-4 and 10-3 mol/l aqueous solutions on carbonized chest nut shell (CCS) was studied at 25ºC. The effect of temperature was also studied at 25 and 35ºC for the concentration of 10-3 mol/l. The adsorption data was modelled by using Langmuir and Freundlich isotherms. The adsorption data fit well with Freundlich isotherm that indicates the pesticide adsorption is heterogeneous type and multi layer characteristics.The effect of pH on adsorption was also studied. The adsorption capacity is quite high in acidic medium (pH=3). Different pesticide concentrations were studied at this pH from the point of pesticide removal. The carbonized chest nut shell was a good and cheap adsorbent which can be utilized in the place of active carbon.
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