Abstract
The removal of phenol derivatives from waste waters is of great concern because of the extreme toxicity and persistency. The present study deals with the adsorption of p-nitrophenol from aqueous solution onto jute stick char. Jute stick is a solid waste obtained from the agricultural firms and jute industry. Batch studies were carried out with synthetic wastewater having p-nitrophenol concentration of 1000 ppm using jute stick char as a low cost adsorbent. The operating variables studied are adsorbent dose, pH, contact time, effect of salt addition, and initial p-nitrophenol concentration etc. The adsorption data was analyzed using Freundlich and Langmuir models. The experimental results showed that Freundlich model appear to fit the isotherm data better than the Langmuir model. Optimum conditions for p-nitrophenol were found to be at pH= 7.6 and equilibrium time 5 h. The pseudo-second order kinetic model provides the best correlation of the experimental data compared to the pseudo-first-order kinetic model.
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