Abstract
The adsorption performance of date stones was evaluated by varying experimental conditions such as, contact time, and phenol initial concentration. The maximum adsorption yield was 90.165% with the initial concentrations ranging from 10 to 50 mg/L. The adsorption reaches 82.388% with a maximum capacity of 2.032mg/g after 220 minutes Kinetics study showed that the adsorption agreed well with pseudo-second-order model. Demonstrating the formation of mono-molecular layer on the surface of the adsorbent during adsorption process Freundlich, Langmuir and Temkin isotherm models were applied to the equilibrium data. The results showed that Langmuir equation fits better than the Freundlich and Temkin equations. Through this study, we have confirmed that the activated carbon derived from date stones has a large capacity for adsorption, making it an effective and inexpensive adsorbent in the removal of phenolic compounds in aqueous solutions
Published Version
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