Adsorção de derivados de petróleo com vermiculita organofilizada.

Abstract

The organophilization process has been applied and studied in the search for improvements in vermiculite properties for use in various areas, such as in combating pollution by industrial effluents containing oil and its derivatives. In this work, the vermiculite was modified with CTAB surfactant, characterized and evaluated as the adsorption capacity of petroleum products: gasoline, diesel, kerosene and lubricating oil using the techniques of cation exchange capacity (CEC), X-ray diffraction (XRD ), Foster swelling, spectroscopy in the infrared (FTIR), thermal gravimetric analysis (TG / DTG), the characterizations of XRD, FTIR, TG / DTG is evident the organophilization of vermiculite; the adsorption test and Swelling Foster proved that organophilizated vermiculite retains more petroleum in order gasoline> diesel> kerosene; The tests proved the best affinity in the sample in relation to Vorg Vnat, independent of the organic solvent used, the equilibrium kinetics showed a time of 40 minutes and oil adsorption kinetic model follows the pseudo-second order. Adsorption isotherms showed a better fit to the Langmuir model. The maximum adsorption capacity oil in mg.g-1 at 298 ± 1 K was: 25.36 ± 1.194 showing substantial removal of the contaminant and the adsorbent makes an alternative removal of lubricant oil emulsions.