| Title |
Advanced treatment of transformer mineral oils contaminated with aroclor mixtures using a combined UV-Visible irradiation and adsorption method: Effects of temperature and oil color according to ASTM D1500 |
| ID_Doc |
6889 |
| Authors |
Gherdaoui, CE; Alaoui, C; Oumeddour, H; Bouchikhi, N; Elmeliani, MEE; Aldoori, H; Benoit, O; Lahlaf, RZ; Lerari, D; Delbarre, JP |
| Title |
Advanced treatment of transformer mineral oils contaminated with aroclor mixtures using a combined UV-Visible irradiation and adsorption method: Effects of temperature and oil color according to ASTM D1500 |
| Year |
2024 |
| Published |
|
| Abstract |
Eliminating Aroclors, a category of polychlorinated biphenyl (PCB), from transformer fluids is crucial to environmental protection and the energy sector, given the extensive use of transformers across industries. This study investigates a method for recycling Aroclor-contaminated transformer oils while retaining their original chemical and physical properties. The proposed technique involves exposing the contaminated oil to UV-visible radiation from a Dymax source and treating it with activated clays for adsorption. The process's effectiveness is assessed using various analytical techniques, including breakdown voltage, acidity titration, gas chromatography-mass spectrometry (GC/MS), thermogravimetric analysis (TGA), and ASTM-D1500 color-analysis. Results show that after 8 h of irradiation, Aroclor levels in the oil can be reduced to below 50 ppm, with chlorinated acid compounds subsequently removed by the activated clay. Combining UV-visible radiation and adsorption, this method not only removes aroclors, but also improves the physicochemical properties of the oils, making it a promising approach for transformer fluids purification. |
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