biological gasification/fermentationIn biological gas generation, GRE makes use of a well-proven and -documented anaerobic technology. Organic mass such as green waste, micro algae, urban liquid wastes, food processing waste streams and the like, is fermented in the oxygen-free fermenter with help of various groups of bacteria. This way, the bulk of the energy contained in the organic mass is turned into high-purity biogas. The biogas can be used to generate electric power and heat either through an engine optimized for gas operation (combined heat and power, CHP), or through distributed micro fuel cell units. The biogas can also be upgraded to BioSNG.
Nevertheless a fermentation residue results in the fermentation process. As the nutrients (nitrogen, phosphorus, potash, trace elements) remain in the fermentation residue, it makes a valuable fertilizer. Phosphorus, just like fossil fuels, is finite in nature, and this being so, the production of natural fertilizers is gaining more and more importance.
organic fertilizer from organic waste
See the production facility of Asia Agro Tech Co., Ltd. in Thailand, where 30,000 tons of organic fertilizer are produced from organic waste per year.