A comparative adsorption/biosorption study of mono-chlorinated phenols onto various sorbents |
| |
Authors: | Zümriye Aksu Jülide Yener |
| |
Institution: | Department of Chemical Engineering, Hacettepe University, Beytepe, Ankara, Turkey. zaksu@hacettepe.edu.tr |
| |
Abstract: | 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. |
| |
Keywords: | o-Chlorophenol p-Chlorophenol Adsorption/biosorption Dried activated sludge Fly ash Granular activated carbon |
本文献已被 ScienceDirect 等数据库收录! |