Color removal from textile wastewater using activated carbons produced from textile wastes
Project no. 20618 · Status: Kapanmış · 2019
Summary
In this study, upcycling of solid textile wastes into activated carbon and the potential use of these activated carbons in color removal from textile wastewater were investigated. Cotton and cotton/polyester blended fabric wastes and textile wastewater treatment sludge were selected as textile solid wastes. Chemical activation with zinc chloride was used for activated carbon production. The characterisation of activated carbons were determined by elemental analysis, FT-IR, SEM and BET analysis. Activated carbon yield was determined to be 28-34%. Cotton textile waste based activated carbons were found to have the highest surface area (~1350 m2/g); followed by cotton/polyester and wastewater treatment sludge based ones. Acidic groups of the produced activated carbons were found to be higher than basic groups. The reactive dye adsorpsiton properties of activated carbons produced from textile wastes were investigated by considering adsorbent type, adsorbent amount, dye concentration and adsorption time. When the adsorption values were analyzed in general, it was seen that the treatment sludge-based activated carbons have the highest dye adsorption capacity. It has been demonstrated that the adsorption process is compatible with both Langmuir and Freundlich isotherms, while the adsorption kinetic is highly compatible with the presudo-second-order kinetic model.