OLIVEIRA, I. L.; http://lattes.cnpq.br/9090477529054542; OLIVEIRA, Iuri Laurindo de.
Resumo:
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.