UTILIZAÇÃO DO PLANEJAMENTO FATORIAL PARA ANÁLISE DE ERROS EM PROCESSOS DE ADSORÇÃO

Not only is factorial design of experiments known for its satisfactory results within a reduced number of experiments, it is also very efficient on identification of process variables influences. This paper presents an application of such experimental design on adsorption processes, so that it can be verified the behavior of experimental errors according to input variables. Therefore, the necessary data was obtained through adsorption experiments in stirred tank, with five replications for each condition, in order to calculate the outcome variable, in this case, the variance. Methylene blue dye was used as adsorbate, varying solution concentrations and volumes, and activated carbon was used as adsorbent. Evaluating the results achieved, it was observed that error values were greater around the central point. Furthermore, it was possible to verify that the variable which had more influence on dataset was concentration. Index Terms - Adsorption, errors analysis, factorial design of experiments, input variable influences.