A comparative adsorption/biosorption study of mono-chlorinated phenols onto various sorbents.
The potential use of dried activated sludge and fly ash as a substitute for granular activated carbon for removing mono-chlorinated phenols (o-chlorophenol and p-chlorophenol) was examined. The pollutant binding capacity of the adsorbent/biosorbent was shown to be a function of substituted group, initial pH and initial mono-chlorinated phenol concentration. The working sorption pH value was determined as 1.0 and the equilibrium uptake increased with increasing initial mono-chlorinated phenol concentration up to 500 mg dm(-3) for all the mono-chlorinated phenol-sorbent systems. The suitability of the Freundlich, Langmuir and Redlich-Peterson adsorption models to the equilibrium data were investigated for each mono-chlorinated phenol-sorbent system. The results showed that the equilibrium data for all the mono-chlorinated phenol-sorbent systems fitted the Redlich-Peterson model best within the concentration range studied.
Aksu
Z
Z
Department of Chemical Engineering, Hacettepe University, Beytepe, Ankara, Turkey. zaksu@hacettepe.edu.tr
Yener
J
J
D000327:Adsorption; D017606:Chlorine Compounds / Q000737:chemistry*; D004787:Environmental Pollution / Q000517:prevention & control; D006863:Hydrogen-Ion Concentration; D017745:Incineration; D007220:Industrial Waste; D008962:Models, Theoretical; D010636:Phenols / Q000737:chemistry*; D012037:Refuse Disposal / Q000379:methods*
D017606:Chlorine Compounds; D007220:Industrial Waste; D010636:Phenols