Fig. (3) General view of the fermentation reactor for bioethanol production: 1 – the working chamber of the bioreactor; 2 – hydraulic seal; 3 – thermostatic bath with circuit system; 4 – fermenter control unit with an air compressor; 5 – electric drive of the mixer; 6 – electric drive of mechanical defoamer; 7 – air filter; 8 – thermoregulatory unit; 9 – power supply of the thermoregulatory unit.