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Abstract
Activated Coke fines (ACF), prepared from coke fine refuse, has been U3ed for removal of Dissolved Organic Carbon (DOC), present in untreated and biologically treated coal carbonisation wastewater. Adsorption on activated carbon is a promising technique for the removal of pollutants, especially the non‐biodegradables. The organic carbon concentration has been reduced from 750 mg/l to 70mg/l from the biologically treated wastewater, a level which is lower than the prescribed standards. Attempts have been made to identify the rate determining steps in the complex wastewater and quantify the batch kinetic parameters. Various adsorption models have been applied for DOC‐ACF system and the associated constants have been worked out. The ultimate capacity of ACF in term of DOC removal ranges between 44–80 mg/g.
This paper addresses itself to the evaluation of the mechanism, kinetics and adsorption efficiency of ACF with respect to removal of non‐biodegradable organics from coal carbonisation wastewater(CCW).