APPLICATION OF THE WASTE CLAY PLASTER POLE OF ARARIPE (PERNAMBUCO - BRAZIL) AS ADSORBENT OF TEXTILE DYE

Abstract

The state of Pernambuco, northeastern Brazil, has a large deposit of gypsum, which made the Araripe region as one of the main centers of the country plasterers. Coupled with the economic development has been the generation of large volumes of waste generated from the extraction of ore. In this center of development within the state there is a textile center which accounts for 14% of national production of jeans. Joining these two poles, this study aims to use an inexpensive adsorbent, such as clays of the send-off of the Araripe, which is an environmental liability. Clays were tested fresh and heat treated at different temperatures, to optimize treatment of it. To the best condition, the residue was characterized by X-ray diffraction and BET. Then we performed a second design to optimize the adsorptive process. The results obtained, it was concluded that the best condition is for a smaller mass, higher and lower temperature stirring for both systems dye / clay with a removal of 99,82%.

Key Words: adsorption, textile dye, residual clay, indigo