THE REMOVAL OF COLOR FROM EFFLUENTS USING POLYAMIDE EPICHLOROHYDRIN-CELLULOSE POLYMER .3. USE IN ANIONIC DYE REMOVAL IN A BATCH PROCESS

Polyamide-epichlorohydrin-cellulose (PAE-Cell) can adsorb substantial quantities of several direct dyes and acid dyes from aqueous solutions using a batch process. The adsorption kinetics of these dyes on PAE-C ell was studied using Langmuir and Freundlich isotherm equations at di fferent temperatures. Other adsorption parameters studied were initial dye concentration, the pH of the solution, particle size, treated tim e, and salt added. The PAE-Cell was found to have monolayer equilibriu m saturation capacities of more than 500 mg dye per PAE-Cell for these anionic dyes. These results show that PAE-Cell polymers exhibit bette r capacity than do some types of commercial activated carbon. (C) 1993 John Wiley & Sons, Inc.