Biomass-to-nitrogen technology to be installed at North Dakota biofuel plant
Colorado-based Agrebon Inc. is developing a nitrogen fertilizer production plant adjacent to the Tharaldson Ethanol Inc. plant in Casselton, N.D. The fertilizer plant will generate biogas from ethanol stillage. The biogas will then be processed into urea, anhydrous ammonia and urea ammonium nitrate.
The project is currently in the financing stage. An agreement with business development partner Progressive Nutrient Systems is already in place, while an agreement with the ethanol plant is nearing completion.
The technology developed by Agrebon utilizes well-known technology that is used to convert natural gas into nitrogen, but substitutes biogas from an aerobic digestion system for the fossil-based natural gas. Approximately 1 pound of nitrogen can be produced per bushel of corn converted into ethanol. Pilot testing, economic modeling of the process, and an engineering review were completed at the University of North Dakota’s Energy and Environmental Research Center.