Historical, technical and economic aspects of biogas development: Case of Poland and Ukraine.

The paper describes 3700 years of biogas manufacture with more details of last 120 years. Due to V. Omelianskij׳s researches 120 years ago, Ukrainians achieved a share in biogas manufacture in the overall biogas development. Poland started to take part in biogas development 96 years ago by finishing biogas plant in Posen 1928. History and current status of biogas plants achievements are collected and analyzed. Faults and achievements of the two countries are exactly described in the background of global history to draw conclusion for future that helps not to repeat the old errors. The development of green economy based on biogas is discussed. The paper brings back ideas that were previously extinguished due to low technological level and those could be used more successfully nowadays. [ABSTRACT FROM AUTHOR]