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Print version ISSN 0012-7353


VILLEGAS, Juan P. et al. Crude oil removal from production water using nano-intermediates of a SiO 2 support functionalized with magnetic nanoparticles. Dyna rev.fac.nac.minas [online]. 2017, vol.84, n.202, pp.65-74. ISSN 0012-7353.

This work aims to develop nano-intermediates adsorbents based on micrometric silica functionalized with magnetite nanoparticles with high efficiencies in the oil removal, additionally to high catalytic activities in the decomposition of the crude oil adsorbed. Silica with sizes < 20 μm were functionalized with 5 wt% of magnetite nanoparticles. The efficiency of the adsorbents was evaluated through batch adsorption experiments of oil from oil in water emulsions at different pH, salinity and oil concentration using a UV-vis spectrophotometer. Results showed that for both the SiO2 support and the synthesized nano-intermediate, the adsorption equilibrium was reached in less tan 100 min. A comparison was made by employing a material typically used in the oil and gas industry. After the adsorption process, the materials can be recovered and regenerated trough thermal processes. It was observed that the magnetite nanoparticles over the support act as a catalyst for decomposition of the adsorbed oil.

Keywords : Production water; Adsorption; Nano-Intermediates; Oil; Pyrolysis; Oxidation..

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