Injecting New Life into Cellulosic Ethanol Production
We bridge the gap to economically feasible fuel ethanol from Nordic renewable and sustainable forest-based residues.
Our objective is to further develop and optimize the novel CoRyFee fermentation concept for lignocellulosic ethanol production and demonstrate its feasibility in a near-industrial scale. Being feedstock-agnostic, the technology will enable use of soft-and hardwood, feedstocks that cannot currently be effectively utilized by any available technology.
Three Nordic companies have come together for the NewLiEP project to help answer the demand for more sustainable fuels in the transportation sector, which is still heavily reliant on fossil fuels. We will prepare the concept for commercialization through the involvement of potential customer and introduce to the market an economically feasible concept for sustainable fuel ethanol production.
CoRyFee – Cost Reduction in Yeast Fermentation for Commercial Production of Cellulosic Ethanol
The CoRyFee concept takes advantage of a newly developed fermentation monitoring and control strategy, which makes it possible to keep the fermentation conditions at a “sweet spot”, thus allowing for optimal ethanol productivity and increased yields. In addition, the fermentation can be performed in continuous operation without fresh addition of yeast after the initial inoculum has been added to start the fermentation process.
The CoRyFee concept is the subject of a joint patent application filed by Terranol A/S and SEKAB E-Technology AB as of 2018. The concept has at this point in time been demonstrated at fermentation scale of 10.000L fermentation volume with 50.000L of hydrolysate being fermented at 95 percent ethanol yield at the Biorefinery Demo Plant in Örnsköldsvik, Sweden. Continuous fermentation operations of 21 days without interruption and without addition of yeast after the initial fermentation have been demonstrated. The technology is suitable for any type of fermentation process regardless of fermenting organism and fermentation product.
Main improvements of the CoRyFee concept compared to standard fermentation technologies:
Significantly improved yeast economy due to a 20-fold lower yeast utilization compared to batch fermentations with similar throughput.
6-fold increase in volumetric ethanol productivity compared to batch fermentations.
Stable and continuous 95 percent yields form sugar to ethanol.
50 percent lower investment cost due to reduced need for tank volume, cleaning, and sterilization.
Increased tolerance towards an array of inhibitors released by the pre-treatment process from sugar and lignin degradation.
Terranol A/S is a Danish industrial biotechnology company providing yeast strains and fermentation technology for the 2G bioethanol industry and extensive assistance when it comes to implementing into large-scale production processes. Competencies in process up scaling has been demonstrated from 2L and up to 270.000L scale with results and performance that closely resemble each other.
Kanteleen Voima is a Finnish electricity producer established in 2006 and owned by Finnish energy companies. Kanteleen operates a power plant at Haapavesi which currently uses peat as main fuel. The company is planning to invest in a bioethanol plant, project Nordfuel, with an annual output of 65.000 tonnes of ethanol converting renewable and sustainable forest-based residues to ethanol.
SEKAB E-Technology AB is one of Europe´s leading ethanol players and is responsible for the operation of the Biorefinery Demo Plant in Örnsköldsvik, Sweden. SEKAB E-Technology has developed certain know-how, patents, processes and proprietary technologies for the production of fermentable sugars, lignin and ethanol from a variety of lignocellulosic biomass under the technology platform called CelluAPP®.
The complete CoRyFee setup in lab-scale.
The RI detector – an essential part of the CoRyFee.
The fermenter and feed-bottle setup in the lab.
Interior of BDP
Feeding of wood chips to pre-treatment reactor
Pre-treated wood chips
Chipping of raw materials
Mixing of chips
Loading of the truck