【摘 要】
：
Olive mills wastewater (OMW) exhibit substantial contaminated properties due to their content of phe-nolic constituents and organic substances.The purpose of this work was the investigation of the effi-ciency of clay materials for the adsorption of phenol
【机 构】
：
Useful Materials Valorization Laboratory,National Center for Research in Materials Sciences,Soliman
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Olive mills wastewater (OMW) exhibit substantial contaminated properties due to their content of phe-nolic constituents and organic substances.The purpose of this work was the investigation of the effi-ciency of clay materials for the adsorption of phenolic compounds,which are contained in OMW.Furthermore,thermal activation of the clay took place in order to improve phenolic compounds uptake and afterwards,desorption process was studied.The adsorbent was characterized using XRD,XRF and BET surface area analyses.The adsorption efficiency of phenolic compounds by raw and calcined clay at 600 ℃ was 77.61％ and 84.21％,respectively at acidic pH.The values of Gibbs free energy indicated that adsorption process is spontaneous and beneficial at higher temperatures.Alkaline medium was propi-tious for phenolic compounds desorption.The obtained results showed that natural clay could be used as a low-cost adsorbent for OMW treatment.
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