Adsorption-desorption of phenolic compounds from olive mills wastewater using Tunisian natural clay  

作　　者：Islem Chaari Atef Touil Mounir Medhioub 

机构地区：[1]Useful Materials Valorization Laboratory,National Center for Research in Materials Sciences,Soliman 8027,Tunisia [2]Department of Geology,Faculty of Science,Sfax,Tunisia

出　　处：《Chinese Journal of Chemical Engineering》2021年第12期287-292,共6页中国化学工程学报（英文版）

摘　　要：Olive mills wastewater(OMW) exhibit substantial contaminated properties due to their content of phenolic constituents and organic substances. The purpose of this work was the investigation of the efficiency 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 °C was 77.61% and 84.21%, respectively at acidic p H. The values of Gibbs free energy indicated that adsorption process is spontaneous and beneficial at higher temperatures. Alkaline medium was propitious for phenolic compounds desorption. The obtained results showed that natural clay could be used as a low-cost adsorbent for OMW treatment.

关 键 词：Clayey material Adsorption Phenolic compounds Olive mills wastewaters DESORPTION 

分 类 号：X792[环境科学与工程—环境工程] TQ424[化学工程]