Studying of synthesized nano-adsorbent of graphene and magnetic graphene at removal BTEX of gasoline and investigation of their adsorption isotherms

Document Type : Original Article


1 department of chemestry

2 Department of chemistry payam noor university Tehran.19395-4697-Iran

3 Iran Polymer and Petrochemical Institute, P.O. Box: 14965/115, Tehran, Iran

4 National Iranian Oil Product/ Distribution,Tehran,IRAN/Industrial adviser


In this study, graphene and magnetic graphene - based nano-absorbents were synthesized by Hummers method and was used in order to removal of BTEX from gasoline. The structural properties of nanoabsorbents were characterized with X-ray diffraction (XRD) and Scanning electron microscope (SEM). The absorption of pollutants were measured using UV-Vis spectrophotometer. The studied variables were the absorbent concentration, the contact time, the initial concentration of Pollutants and temprauchere. Adsorption isotherms were drawn with Longmuir, Freundlich, temkin, Freundlich- Longmuir, Dubnin-Randkovich )D-R( and Redlich-Peterson )R-P( models. The maximum adsorption capacity for BTEX was determined by graphene 56.8 mg/g and by magnetic graphene 69.6 mg/g. Experimental and Statistical results was showed that magnetic graphene has better performance than graphene. Kinetic models, based on the assumption of the pseudo-first-order and pseudo-second-order models, were applied to examine the kinetics of the adsorption. The results showed that kinetic data followed closely to the first-second-order model.


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