DINIZ, Isaac Pereira.; ALMEIDA, Reutemann Alves.; SANTOS, José Carlos Oliveira.
Abstract:
The lubricating oils are substances of mineral base responsible for formation of a protective film, which
obstructs the straight contact between two surfaces that are moved between you. To recycle the
lubricant means to apply processes physical-chemical on the used oil, making possible getting the oil
base, raw material that can be re-used for getting lubricants. The objective of the present work is
automotives used in motors value the process of recuperation of lubricating oils to petrol through
extraction for polar solvent (1-butanol) on basis of his physical-chemical properties. The lubricating oils
(SAE 20-50W), when the petrol was applied in motors suffered a process of recuperation with the
solvent 1-butanol. After the recuperation, all the oils were characterized in function of the physicalchemical
properties (density, degree API, color), rheology, infrared spectroscopy (IR) and thermal
analyses. The IR analyses indicated the products of the reaction of oxidation. The thermal curves
indicated a reduction in the initial temperature to measure that the oil was degraded.