Zhadan S. Biotechnology of poultry waste utilization with obtaining of biogas

The thesis is devoted to the study of poultry waste utilization with obtaining of biogas, finding ways to minimize water consumption and to avoid inhibition of methane fermentation process. Established the technological parameters corresponding to the different modes of operation of a biogas plant in the mesophilic and thermophilic conditions. Thus, the use of recirculation of the gas phase with its purification to reduce the concentration of ammonia nitrogen is inappropriate in terms of energy consumption, while its use to reduce the concentration of sulfides can be regarded as acceptable. A new approach to the removal of ammonia nitrogen from the liquid phase by sorption of ammonia from the gas phase by nonvolatile sorbent, which is located directly in the reactor, but does not contact with the substrate was proposed. Investigated the methanogenesis under reduced concentration of the process inhibitors. The proposed approach to ammonia nitrogen removal can be used in the processing of other wastes with a high nitrogen content.