A process for the treatment of oily hazardous solid materials such as for example spent bleaching earths. The process allows a safe and economical recovery of typically about 85% to 95% of the residual oil contained in such oily hazardous solid materials and transforms those ones into inert materials safe to transport, store, dispose of, or even makes them valuable for some applications. The process includes the production of a transportation slurry and at least one extraction slurry. The at least one extraction slurry is separated in at least one centrifuge decanter.

A system and method effect the separation of wax and oil from a sorghum slurry. The sorghum slurry is mixed with supercritical CO.sub.2 to create a first output, and the first output is mixed with liquid CO.sub.2 causing a sudden drop in temperature such that solid wax particles drop from the first output to create a second output of CO.sub.2 and oil. The second output is heated while reducing pressure such that the CO.sub.2 is put into a gas phase and the oil separates from the CO.sub.2.

A system and method effect the separation of wax and oil from a sorghum slurry. The sorghum slurry is mixed with supercritical CO.sub.2 to create a first output, and the first output is mixed with liquid CO.sub.2 causing a sudden drop in temperature such that solid wax particles drop from the first output to create a second output of CO.sub.2 and oil. The second output is heated while reducing pressure such that the CO.sub.2 is put into a gas phase and the oil separates from the CO.sub.2.

The invention relates to a method for obtaining the water-insoluble fraction of Carica papaya sap, enriched with Carica papaya lipase, the water-insoluble fraction obtainable by this method, a method for the preparation of an activated fat and/or an activated wax by means of said water-insoluble fraction of the Carica papaya sap, the activated fat and/or the activated wax capable of being obtained by this method, a composition combining said activated fat and/or said activated wax, as well as the cosmetic use of these products.

The invention relates to a method for obtaining the water-insoluble fraction of Carica papaya sap, enriched with Carica papaya lipase, the water-insoluble fraction obtainable by this method, a method for the preparation of an activated fat and/or an activated wax by means of said water-insoluble fraction of the Carica papaya sap, the activated fat and/or the activated wax capable of being obtained by this method, a composition combining said activated fat and/or said activated wax, as well as the cosmetic use of these products.