Techniques that have been used for oil cleaning and regeneration

2 Techniques that have been used for oil cleaning and regeneration 

Various methods have been tried by different academic and industrial researchers to develop a viable system to regenerate spent oil. Some of these techniques have produced good results, while others have demonstrated marginal improvement or even detrimental effects on oil quality. They are  

treatment of used frying oil with adsorbents, comprising activated alumina, magnesium silicates, amorphous silica, etc., and followed by filtration  

adsorption, followed by supplementation of tocophorols and/or addition of synthetic anti-oxidants. 

The above procedures have been claimed by their authors or inventors as beneficial to the used oil. 

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