Otimização do processo de produção do carvão ativado a partir das podas do Ziziphus Joazeiro

Abstract

Ziziphus Joazeiro (Juazeiro) is an endemic species that can be found in abundance in the northeast region of Brazil. It is a species rich in carbonaceous matter, having promising properties for applications in the synthesis of Activated Carbon (AC). Activated carbon, produced from carbonization and subsequent physical or chemical activation, has a porous structure composed of a high carbon content. Usually, the precursors are of plant origin and, in recent decades, the raw material has been diversified for its production, ranging from residues from production processes to the use of native plant species such as, for example, Juazeiro. The synthesis of CA, by chemical activation, is divided into two steps: impregnation and precursor activation. Based on the aforementioned variables, this research aimed to find optimized values for the oven temperature and proportions of chemical reagent to be used in the process. From this research, it sought to optimize the production of activated carbon through experimental planning, which was developed using the Central Composite Rotational Design (DCCR) modeling, associated with the Surface Response Methodology (MSR). From the DCCR planning, a function was generated that projects the effects of the independent variables to the response variables, focused on the yield for the significant effects. By the ANOVA test, it can be reaffirmed that the yield is statistically significant, since it presented Fcalculated/Ftabled greater than 4 (four).