Removal of Food Carmoisine Dye E-112 From Waste Water Using Different Manufactured Media

Abstract

Abstract The industrial and agricultural waste water contains many contaminants; one of them is the food carmoisine dye E112, which causes a series problems for the environment. Adsorption using porous media is one of the solutions to this problem. In the present work, activated silica sand (ASS), activated carbon (AC), porcelanite, silt and composite porous media, were prepared and used to remove the E112 from waste water using adsorption technique. It was predicted that the removal efficiency was affected by many factors such as time, pH, dose and ozonation of media. These factors were studied and analyzed to investigate the best media which is the activated carbon with the highest removal efficiency than the other porous medias. The results showed that: • The best removal efficiency of carmoisine dye E-112 was by activated carbon (AC) that reaching to 76% under specific conditions (7 of pH, 20g of AC and 10 mg/l initial concentration of dye) which were selected after several attempts until reaching the best results of removal efficiency. • Ozonation (ozon pumping to the porous media) was the effective reason of removal efficiency increasing. • The best one of porous medias according to the removal efficiency was: AC> ASS> composite> porcilanite> silt.