Methods of increasing the energy efficiency of biogas plants

Abstract

The use of biogas plants has a positive agrotechnical result. Thanks to the use of biofertilizers, as a result of the processing of these plants, soil fertility is restored, which in the future will have a positive effect on productivity. However, despite the positive effects of anaerobic treatment of manure in biogas reactors, a serious obstacle to their use in agriculture is their relatively low energy efficiency during biogas production (up to 60% of the released biogas is used by the plant its own needs) [1]. At the same time, the heat contained in the effluent is an additional energy reserve, which should be used whenever possible to heat the loaded substrate and compensate for heat losses in the reactor.