DEPORTATION OF TOXIC PHENOL FROM AQUEOUS SYSTEM BY WHEAT HUSK
|Devaanshi Jagwani* and Pranita Joshi
Faculty of Department of Engineering Chemistry, Medi-Caps Group of Institutions, Indore, India
|Corresponding Author: Devaanshi Jagwani, E-mail: [email protected]|
|Received: 10 January 2014 Accepted: 04 February 2014|
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The potential of employing wheat husk for phenol adsorption from aqueous solution was studied. Batch experiments and isotherm studies were carried out under varying experimental conditions of contact time, phenol concentration, adsorbent dose and pH. The extent of removal was dependent on concentration of phenol, contact time, pH, and quantity of adsorbent. Adsorption equilibrium of wheat husk was reached within 5 hr for phenolic concentration 100-900 μg/L. With an initial concentration of 0.2 mg/L phenol in 100 mL and pH 7.0, the removal was found to be about 91.7% with 3.0 g wheat husk. The adsorption of phenol decreases with increasing the solution pH value. The suitability of the Freundlich and Langmuir adsorption models to the equilibrium data were investigated for each phenol-sorbent system. The results showed that the equilibrium data for all the phenolsorbent systems fitted the Freundlich model best within the concentration range studied. A comparative study showed that wheat husk was very effective at lower concentrations of phenol for removal. The studies showed that the wheat husk can be used as an efficient adsorbent material for removal of phenols from water and wastewater.