Algerian Journal of Engineering Research
Volume 2, Numéro 4, Pages 41-46
2018-12-01
Removal And Recovery Of Diethyl Phthalate (dep) Onto Activated Carbon From Albizzia Julibrissin Pods: Operating Parameters Effect And Equilibriums Modeling
Authors : Y. Bouhamidi . W. Hachi . A. Yennoune . L. Nouri . F. Kaouah .
Abstract
Diethyl phthalate (DEP), a disrupting compound, is one of major environmental issues, due to its harmful effects on the human health and the ecological systems. It is frequently detected in drinking water mainly as a consequence of its widespread use as plasticizer and non-plasticizer and its characteristic not to bind to materials, hence its migration into various systems like surface marine water, freshwater, sediments, etc. to end up in the human body to possibly cause cancer, liver damage, genetic disorders, etc. Therefore this has encouraged the present study considering the phthalate retention onto an activated carbon. The adsorption of DEP onto a new activated carbon prepared from waste material and chemically activated by H3PO4, was investigated, combining non-recovered waste recycling and reduction of phthalate water contamination. In fact, Albizzia Julibrissin Pods AJP was used for preparing activated carbon, which is a by-product widely abundant in both Asia and Africa. It may be considered as an invasive tree, providing a high volume of pods non-valued constituting an environmental problem. In addition, Albizzia Julibrissin pod is characterized by a high lingo-cellulosic composition, making it a promising feedstock for the production of activated carbon with a high specific surface area. The main objective was to determine the phenomenon which governed the DEP adsorption onto activated carbon from waste material. Batch experiments were carried out to evaluate the effect of adsorbent dose, temperature and DEP concentration on adsorption efficiency. The optimum conditions were obtained at 1 g L -1 of activated carbon, 20°C and 150 g L-1 of DEP. The equilibrium data were very well represented by Langmuir isotherm with a maximum adsorption capacity of 435 mg/g, confirming the mono-layer coverage. Finally these results encouraged the possibility to treat, this type of pollutant, by activated carbon prepared from waste material.
Keywords
Diethyl phthalate; Activated Carbon, Albizzia Julibrissin Pods, Equilibrium, parameters effect
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