Abstract: A process for obtaining biologically active compositions from emu oil is provided, wherein the compositions are obtained by molecular distillation of the oil, both the distillate and the distillation residue being biologically active compositions. More specifically, a process for obtaining biologically active compositions from refined emu oil is disclosed, which has the following steps: (a) feeding emu oil at a flow of between 1 to 300 kg/h*m2 to a molecular distillation column at a pressure between 0.0001 mbar and 0.05 mbar and at an evaporator temperature between 160° C. and 250° C., for generating a distillate and a residue; and (b) collecting the distillate from the column, the distillate being a biologically active composition, and (c) collecting the residue from the column, the residue being a biologically active composition.

Abstract: Method for removing sulphur from the digestate and the biogas in a city and/or agricultural and/or industrial effluent digester, using a wet and/or a dry route, the digester (1) being made up of a closed vessel (2) in which a mass of products to be treated, that forms the digestate, undergoes anaerobic digestion with a volume of gas on top of the digestate from which the biogas is extracted, the digestate being drawn off at a point (5) of the digester then reinjected at another point (7). The digestate drawn off is made to follow: an upward first path (10) with injection of gaseous oxidizing agent at the bottom for aeration, the gaseous oxidizing agent and the digestate flowing concurrentwise; and a downward second path (12) under anaerobic conditions before returning to the digester, the excess gaseous oxidizing agent being removed in the top part (20) of at least one of the paths.

Abstract: The invention is related to a process to obtain tetracosanol from a complex mixture derived from tall oil pitch that comprises terpenoids, rosin alcohols, rosin aldehydes, aliphatic alcohols, hydrocarbons and stilbene derivatives. The process comprises a mixture crystallization step from hexane and a fractional distillation of the crystallized solids, which yields tetracosanol with more than 90% purity.