PORE DIFFUSION DURING THE ADSORPTION OF DYES ONTO BAGASSE PITH

The adsorption of four dyestuffs onto bagasse pith, a waste product fr om the sugar cane industry, has been studied. The equilibrium isotherm s have been measured and concentration versus time decay curves have b een determined in an agitated batch adsorber. A two-resistance model h as been developed based on external film mass transfer and pore diffus ion. The model incorporates a concentration-decay curve fitting routin e which was optimized during the model development. The experimental b atch contact time data have been compared with the theoretically predi cted data in the form of Sherwood numbers.