OXIDATIVE DEGRADATION OF TEXTILE WASTE WATER USING SNAIL SHELL AND FLOOR TILES AS AN ABSORBENT

Textile wastewater poses a significant environmental threat due to its recalcitrant nature and toxic pollutants. This study explores the potential of snail shell and floor tiles as sustainable adsorbents for the oxidative degradation of textile wastewater. The adsorbents were characterized using FTIR,SEM,BET and XRF analyses. The effects of contact time, adsorbent dosage, and initial concentration on the degradation efficiency were investigated. The Snail Shell And Floor tiles were purchased separately, processed and characterized to evaluate its suitability as an adsorbent. Batch adsorption studies were carried out by varying parameters such as adsorbent dosage, contact time, temperature ,pH and initial dye concentration.The adsorption mechanism was predicted by some kinetic models such as pseudo-first-order, pseudo-second-order, intra particle diffusion model and Elovich model.The results of batch adsorption study showed that for unactivated and activated snail shell and floor tiles increasing the adsorbent dosage and contact time resulted in increased percentage dye removal while increasing the pH and initial dye concentration resulted in decrease in percentage dye removal. The optimum conditions for maximum percentage dye removal for unmodified and modified bio adsorbent are 2.5g adsorbent dosage, 75minutes contact time, and 25mg/l initial dye concentration. The best percentage dye removal were 268.59 % and 251.61% using unactivated and activated bio adsorbent. The sorption kinetics for the adsorption processes were found to be best represented by the pseudo-second-order kinetic equation, as its R2 values were greater than 0.98. and the qe experimental and qe calculated are virtually equal. The Elovich model also showed a significant fitting to the kinetics of the adsorption process as its R2 values were also high. This suggests that chemisorption with heterogeneous sorption mechanism is likely responsible for congo red dye uptake