Solid Separations:
Saccharified mash is then sent to the sugar clarification system. Paddle screens and centrifuges are used to filter out spent grain solids and wash sugar from the spent grains in a 3-stage counter current wash. Liquid sugar is pumped to 121,000-gallon SS storage tanks and solids are sent to rotary drum dyer for final drying.
Fermentation begins with bacterial propagation through a sanitary seed train consisting of two 44 gallon seed tanks, two 2000 gallon seed tanks and finally a 28,500 gallon seed tank before being mixed with liquid sugar in four 285,000 gallon fermenters. During fermentation broth is continuously stripped from the fermenters and passed through an Alfa Laval ultra filtration skid separating the biologics from the fermentation broth which are sent back to fermenter. Filtrate is pumped to the distillation unit where Butanol and Acetone are distilled off through a series of distillation columns and passed through a 3-effect evaporation system before heading to final product storage
Other notable features include an on-site wastewater treatment facility rated for 157,000 gallons per day and full product testing and microbiological laboratory.
Other potential uses included: high protein feed products, renewable biochemicals, single cell proteins, sustainable aviation fuel, food grade organic acids and industrial/GNS alcohols.