Per: PAULA MARIA GOMES CUNHA LEãO (UFMG), Nicolas Henrique Alves Ferreira (UFMG), Paulo Roberto Gomes Brandão (UFMG)
Abstract:
This study aims to analyze the state of aggregation and dispersion of charcoal, evaluating the influence of pH and a pre-defined reagent. In this context, the samples were initially characterized chemically and mineralogically, aiming to identify its main constituents and justify the phenomena observed. To achieve these objectives, sedimentation tests were carried out in the Galery tube, under different pH conditions and reagent dosages, analyzing the sample’s dispersion degree for the proposed variables. The results indicated that the charcoal presented a stable behavior only in the alkaline pH range and that the increase in pH and in the dosage of the reagent employed resulted in an increase, although not as expressive, in the sample’s dispersion degree. The sedimentation tube used proved to be efficient for the study of aggregation and dispersion of charcoal, enabling the understanding of the behaviors and phenomena associated with this material.