Utilização de óxido de grafeno como adsorvente para remoção do corante remazol preto B em meio aquoso.

Abstract

The growing demand on the increase of emerging emissions in water has become a very worrying environmental problem. One of the main causes of water pollution are the textile industries, this sector of discharge of thousands of pollutants in the waters, among these pollutants the most outstanding are the dyes. The presence of dyes in the aquatic environment ends up impeding the passage of light in the water, causing changes in photosynthetic activities. There are already some processes that are being trained to try to remove dyes from water, and among these methods, the adsorption process that stands out the most, due to its low cost. Thus, this work sought to synthesize the graphene oxide nano-material using the synthetic synthetic route by Hummers to use it as an adsorbent in the removal of the reactive dye remazol black B in aqueous medium. Graphene oxide was chosen to be used as an adsorbent because it has good stability, a large surface area, together with the high number of pores that make this material promising in the removal of dyes in aqueous media. It was synthesized following the methodology proposed by Hummers, following the synthetic route, 3g of GO was obtained, which was diluted in 600ml of distilled water to prepare the suspension with a concentration equal to 5 thousand ppm. The main objective of this work was to evaluate the percentage of graphene oxide removal in powder form, as well as the graphene oxide suspension obtained at different time intervals to remove the dye remazole black b, and the results obtained indicate that the use of Powdered graphene oxide was more efficient in the dye removal process with a removal percentage equal to 64.63% in a time interval of 120 minutes and initial dye concentration equal to 100 ppm, leading to the conclusion that the dye oxide Graphene has an overwhelming removal percentage in the adsorption process of the dye remazole black B.