Recycling of lubricating oils used in gasoline/alcohol engines
| Autor: | R. A. Almeida, J. C. O. Santos, A. G. Souza, M. W. N. C. Carvalho, A. E. A. Lima |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Extraction (chemistry) Base oil 02 engineering and technology Raw material 021001 nanoscience & nanotechnology Condensed Matter Physics Pulp and paper industry 01 natural sciences 010406 physical chemistry 0104 chemical sciences chemistry.chemical_compound chemistry Petroleum Physical and Theoretical Chemistry Lubricant Gasoline 0210 nano-technology Thermal analysis Refining (metallurgy) |
| Zdroj: | Journal of Thermal Analysis and Calorimetry. 137:1463-1470 |
| ISSN: | 1588-2926 1388-6150 |
| DOI: | 10.1007/s10973-018-7976-2 |
| Popis: | Lubricating oils are complex mixtures of hydrocarbons obtained from petroleum by refining process and represent 2% of petroleum derivatives. The used lubricating oil is an important raw material for re-refining, because during its use it is not completely degraded, so it can be recovered from it, the base oil, which can be reused for the same purpose. Mineral-based lubricating oils were used for this work. It worked with two engines using the same type of oil; one of them was monitored during approximately 5000 km and the other one for 10,000 km. The base oil was then recovered from the lubricant using polar organic solvents (1-butanol, 2-propanol and methyl-ethyl-ketone) and then characterized by physicochemical analysis and thermal analysis (TG/DTG/DTA). From the solvents used in the extraction of the base oil, the best yields were methyl-ethyl-ketone, about 80% and 1-butanol, just above 70%. Already with 2-propanol, it was not satisfactory. The method used for the recovery of waste oils proved to be feasible and, the thermal analysis techniques evidenced the viability of this process. |
| Databáze: | OpenAIRE |
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