Estudo da capacidade de adsorção de corantes da indústria têxtil utilizando carvão ativado e terras diatomáceas

Abstract

Concern about the waste generated in the textile industry processes has increased considerably over the years, these wastes containing mainly reactive dyes used in the dyeing process. Observing methods for the removal of these dyes from industrial wastes the technique of adsorption of this dye is presented through materials such as activated carbon and diatomaceous earth. The objective of this work was to perform adsorption tests of the reactive dye with the mentioned materials, defining two parameters for the evaluation of adsorption capacity: agitation and temperature. The results obtained demonstrate that under the conditions studied the diatomaceous earth presented a superior result to the activated carbon, obtaining a high degree of removal of the dye from the residual bath. The agitation and temperature factors influenced the results being the best condition obtained in the test performed at a temperature of 30oC and agitation of 200 rpm, and it was concluded that the diatomaceous earth is a good material for carrying out the process of removing reactive dyes from the residual bath Dyeing of textile yarns.