METHOD FOR OBTAINING BIODIESEL FUEL Russian patent published in 2018 - IPC C10L1/02 C10G3/00 C07C67/02 C11C3/10 B01D17/00 C12P7/20 C12P7/64 C12N11/08 C12M1/40 

FIELD: technological processes.

SUBSTANCE: invention relates to the production of fuels from renewable raw materials. This method for producing biodiesel fuel lies in the fact that oil is mixed with a low alcohol to obtain a mixture, then the transesterification process is carried out using water and a catalytically active membrane consisting of a diffusion layer made on the basis of a polymer that is permeable to low alcohols and glycerol, as well as a connecting layer made of a porous polymer and a catalytically active layer formed by a lipolytic microorganism, wherein the porous polymer is selected from woven or non-woven materials of polyethylene fibers, polypropylene, polytetrafluoroethylene, polyamide, wherein said mixture is brought into contact with the catalytically active membrane layer and the water is brought into contact with the diffusion layer of the membrane, after which the product of the contact of said mixture with the catalytically active layer is subjected to evaporation to remove unreacted alcohol to obtain the desired biodiesel fuel, and the product of the contact of water with the diffusion layer is separated into water and glycerin.

EFFECT: improvement of the technology for obtaining biodiesel fuel, which is provided by the lipolytic microorganism, which is in active state during the entire contact time, and the product is obtained in a sufficiently high yield.

1 cl, 5 ex