Remoção de corante amarelo crepúsculo utilizando casca de arroz tratada como adsorvente

Abstract

Azo dyes are a class of dye most used industrially, being also some of the main contaminants of industrial effluents. Among these, the dye yellow dye is an azo dye highly used in the food industry and must be efficiently removed from industrial waste water. Considering the importance of the removal of industrial effluent gases and the traditional strategies of heat conditioning, such as activated sludge, coagulation and flocculation, methods such as adsorption have been studied as an alternative for the removal. Rice husk is a byproduct of agribusiness and its high content of silicon, is a material of great interest for the application, for example, as adsorbents in chemical analyzes. Thus, in light of the above, this study had the theme of removing food dyes as a rice husk as adsorbent material for the treatment of effluents from the food industry. For this, the rice husk treatment and an optimization of the pH of the adsorbent assays were carried out. Thus, the kinetic and adsorption data were determined. From the developed methodology, what was removed for removal of the yellow dye was applied as a rice husk with 1.5 mol.L-1 KOH as adsorbent material, and the best removal pH was from about 2 to 52, 5% removal of no adsorption assay Finally, it can be concluded that a row rice husk had a good dye removal index.