Caracterização, tratamento e utilização do carvão ativado para adequação de parâmetros físico-químicos de efluentes oleosos através da adsorção em banho finito

Abstract

As the water produced comes from the oil and gas industry, the by-product generated in greater quantity and given its potential to cause environmental impacts, several techniques have been proposed in order to attenuate the concentration of its contaminants, among which we highlight the process of adsorption. In this context, the objective of this work was to characterize and treat the water produced by the adsorption in a finite bath, using activated carbon from coconut (Cocos nucifera L. )as an adsorbent . The results of the characterization of the effluent present fairly high values for total hardness, chlorides, sodium and Chemical Oxygen Demand (COD). We also carried out the characterization of the activated carbon by XRD and BET techniques, in which the low crystallinity and the high surface area of the material were proved. Through a factorial experimental design 22 and taking into account the mass of the adsorbent and the time of contact with the effluent, it was verified that, when using 0.2 g of adsorbent to 100 ml of effluent by stirring for 6 hours, it was possible to obtain a 100% reduction in the COD present in the water produced, which represents the high efficiency of the treatment.

Keywords

• oily effluent. adsorption. cod. activated carbon. treatment.