KINETICS OF THE PACT PROCESS

Kinetics of textile dye removal from a dyeing wastewater was researched. Treatment was carried out in an activated sludge lab plant with powdered activated carbon (PACT). A kinetic model that involved dye adsorption on biomass and carbon and dye degradation by microorganisms was developed. The deduced mechanism of dye removal from the mathematical model showed that the PACT process must be considered basically as a biological process, because dye removal is 99% due to microorganisms. © 1998 Elsevier Science Ltd. All rights reserved