Study of Equilibrium and Kinetics Mechanism of Removal of Oil Spill from the Aqueous system by Expanded Perlite and Natural Zeolite

Shaghayegh .Danehpash¹ Parvin. Farshchi² Emad. Roayaei³ Jamal.Ghoddousi⁴ Amir Hesam. Hassani⁵

1) Department of Environmental Science, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran.
2) Department of Environmental Science, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran.
3) Iranian National Oil Company, Tehran, Iran
4) Department of Environmental Management, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran.
5) Department of Environmental Engineering, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran.

Publication : 6th International Conference on Civil, Architectural and Environmental Sciences - stockholm(6iccae.com)
Abstract :
The considerable increase happened in the past decades regarding oil spill into the marine environment. Concerning this, Oil pollution is one of the serious problems that can be caused by irreparable harm to the environment. The removal of the oil spill is a big challenge for environmental researchers. In this study, expanded perlite and natural zeolite, which are low-cost, abundant and biodegradable sorbents, were used to remove the oil spill from the aquatic system. We also studied the adsorption behavior of crude oil. The empirical data were adapted to the first and second-order, Intra-particle and the Liquid film diffusion models. According to the results, the pseudo-second-order could have a more accurate correlation with the empirical data generated in comparison with the intra-particle, first order sorption kinetic, and liquid film diffusion models. The sorption isotherms such as Langmuir, Freundlich and Temkin models were measured experimentally at different oil concentration. As shown by the results, the Langmuir model is better able to indicate the equilibrium isotherm data related to the crude oil, and there was a better correlation between the experimental data and Langmuir isotherm. Characteristics of the Expanded perlite and Natural zeolite were carried out by SEM analytical technique. Fourier-transform infrared spectroscopy (FT-IR) was used to identify the functional groups in sorbents before and after oil sorption.
Keywords : sorption isotherms Sorption kinetics oil sorbents Expanded Perlite Natural zeolite.