Open AccessAdsorption Model for the Removal of Acid Dyes from Effluent by Bagasse Pith Using a Simplified Isotherm
Author(s) -
Gordon McKay,
Mohammad S. El-Geundi,
Mamdouh M. Nassar
Publication year - 1997
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/026361749701501002
Subject(s) - chemistry , bagasse , adsorption , mass transfer , pith , langmuir adsorption model , effluent , diffusion , freundlich equation , saturation (graph theory) , chromatography , chemical engineering , nuclear chemistry , thermodynamics , organic chemistry , pulp and paper industry , environmental engineering , botany , engineering , biology , physics , mathematics , combinatorics
The adsorption of two acid dyes, viz. Acid Red AR114 and Acid Blue AB25, on to bagasse pith, a waste material from the sugar cane industry, has been studied. Equilibrium isotherms and agitated batch contact time studies have been carried out. A mass-transfer model has been used based on a Langmuir-type isotherm at maximum saturation. This simple or pseudo-irreversible isotherm and the assumption of pore diffusion enables a pore diffusion mass-transfer model to theoretically predict the experimental concentration decay curves very rapidly.