Abstract
In this paper comparative study of adsorption of textile dye forosol blue onto Bagasse Pith and PAC has been presented. It is found that the adsorption potential varies as a function of contact time, concentration, pH, and adsorbent doses. First of all optimum working pH was found out followed by contact time. Blank was run simultaneously, without any adsorbent to determine the impact of pH change on the dye solution. Kinetic studies were conducted by shaking 50mg of adsorbent in 100ml dye solution at the noted optimum pH. Contact time was slowly increased till maximum colour removal was observed. Isotherm studies were conducted – by shaking varied quantity of adsorbent at optimum pH for the period of 1hr and by shaking 100mg of adsorbent in 100ml of varied concentrations of dye at optimum pH for the period of 1hr. Blank study was carried out simultaneously at similar conditions with only adsorbent in 100ml of distilled water, to account for any colour leaching by the adsorbent. Studies in above mentioned cases were repeated twice and mean values are presented in graphical form. By using 900mg/lt of processed Baggase Pith, 94.17% colour removal was achieved upto 10ppm dye solution, within 60 min at the pH 2 which was further achieved by only 100 mg/lt of PAC under similar conditions. Batch kinetics and isotherm studies were undertaken, and the data evaluated for compliance with the Freundlich isotherm model supporting multi layer adsorption.
This paper was presented in Internation Congress on Environmental Research, Dec. 2008, BITS Pillani, Goa Campus, India.
The full paper can be made available on request.
