Chemistry and Technology of Fuels and Oils, Vol.45, No.5, 354-358, 2009
Sorbents based on bentonite from the Apsheron deposit for treating spent compressor oils
Apsheron bentonite has been treated with aqueous hydrochloric acid to produce a modified form, which has been examined for the treatment of spent compressor oil type KM-40. The modified bentonite is better at treating the oil than the natural material. Physicochemical studies have shown that its surface bears acid centers, which participate in the treatment.