Sunflower Integrated Bioenergy Center begins testing of coal-based algae-to-biofuels system
Recently, algae company GreenFuel Technologies experienced setbacks with its bioreactor system which led to the layoff of half the company’s 50-person staff and Bob Metcalfe’s appointment as interim CEO. Cambridge-based GreenFuel seeks to use algae to convert carbon dioxide emissions (e.g. from coal plants) into biofuel, by feeding the emissions to algae (schematic, click to enlarge).
The company has meanwhile abandoned the idea of using the hyper-expensive photobioreactors (a technology Biopact has always seen as unfeasible), and quickly started testing 'greenhouses' instead. Recent experiments with this technology in the desert of Arizona resulted in unstable cultures, and the greenhouses had to be shut down. GreenFuel Technologies described the event as a 'sucessful failure' (legendary words in the renewable energy community). But worse was yet to come: it suffered another blow when it learned that its algae-harvesting system would cost twice as much as anticipated.
In short, on all key parameters and processing steps, there have been failures. Earlier, South African algae company De Beers broke down because it could not perform what it had promised its investors (more here). Other hyped algae companies have meanwhile silently switched to growing terrestrial energy crops (e.g. Algodyne). Biopact's scepticism towards algae biofuels (previous post) is being substantiated. As we have always said, this technology may have some merit and may become feasible in open ponds, over the ultra-long term, if costs can be reduced by a factor of 20 and if major breakthroughs are made in biotechnology (creation of strains that can be carefully controlled).
Still, some keep believing in the viability of algae systems as they are currently being hyped. The Sunflower Integrated Bioenergy Center project announces it reached a 'milestone' recently when equipment arrived to begin the first phase of on-site testing for the coal-based algae-to-biofuels system. Following testing and demonstration of the technology, the system will be used to produce renewable fuels from carbon dioxide (CO2) emissions at the existing and two proposed coal-fired generating units at Holcomb Station.
The equipment will soon be used to identify the strains of algae that grow best in western Kansas when attached to Sunflower's coal-based plant at Holcomb, Kansas. Funding for this initial phase of development is being provided by Tri-State Generation and Transmission Association, Inc., Westminster, Colorado, and Sunflower, both partners in the Holcomb Expansion project.
GreenFuel Technologies delivered a mobile laboratory last week that will be used to ensure that flue gas from Sunflower's power plant can be used to grow microalgae in an enclosed environment. If this test is successful, additional tests will determine which specific strain will grow best in western Kansas with Sunflower's plant:
energy :: sustainability :: carbon dioxide :: ethanol :: biodiesel :: biomass :: algae :: photobioreactor ::
About the recent 'succesful failures', Clare Gustin, Sunflower's Vice President, Member Services and External Affairs says:
Development of an anaerobic digester, biodiesel plant, and dairy subsystems is ongoing with the ethanol plant projected to be under construction later this fall. The total projected investment is expected to be $417 million and will create 161 new jobs.
Schematic: GreenFuel Technologies' idealized scheme to use carbon emissions from power plants to grow algae. Credit: GreenFuel Technologies.
The company has meanwhile abandoned the idea of using the hyper-expensive photobioreactors (a technology Biopact has always seen as unfeasible), and quickly started testing 'greenhouses' instead. Recent experiments with this technology in the desert of Arizona resulted in unstable cultures, and the greenhouses had to be shut down. GreenFuel Technologies described the event as a 'sucessful failure' (legendary words in the renewable energy community). But worse was yet to come: it suffered another blow when it learned that its algae-harvesting system would cost twice as much as anticipated.
In short, on all key parameters and processing steps, there have been failures. Earlier, South African algae company De Beers broke down because it could not perform what it had promised its investors (more here). Other hyped algae companies have meanwhile silently switched to growing terrestrial energy crops (e.g. Algodyne). Biopact's scepticism towards algae biofuels (previous post) is being substantiated. As we have always said, this technology may have some merit and may become feasible in open ponds, over the ultra-long term, if costs can be reduced by a factor of 20 and if major breakthroughs are made in biotechnology (creation of strains that can be carefully controlled).
Still, some keep believing in the viability of algae systems as they are currently being hyped. The Sunflower Integrated Bioenergy Center project announces it reached a 'milestone' recently when equipment arrived to begin the first phase of on-site testing for the coal-based algae-to-biofuels system. Following testing and demonstration of the technology, the system will be used to produce renewable fuels from carbon dioxide (CO2) emissions at the existing and two proposed coal-fired generating units at Holcomb Station.
The equipment will soon be used to identify the strains of algae that grow best in western Kansas when attached to Sunflower's coal-based plant at Holcomb, Kansas. Funding for this initial phase of development is being provided by Tri-State Generation and Transmission Association, Inc., Westminster, Colorado, and Sunflower, both partners in the Holcomb Expansion project.
GreenFuel Technologies delivered a mobile laboratory last week that will be used to ensure that flue gas from Sunflower's power plant can be used to grow microalgae in an enclosed environment. If this test is successful, additional tests will determine which specific strain will grow best in western Kansas with Sunflower's plant:
energy :: sustainability :: carbon dioxide :: ethanol :: biodiesel :: biomass :: algae :: photobioreactor ::
About the recent 'succesful failures', Clare Gustin, Sunflower's Vice President, Member Services and External Affairs says:
GreenFuel Technologies recently learned valuable production lessons at their Arizona algae project that will benefit the Holcomb Expansion partners, so we are pleased they have decided to focus their efforts on five projects globally and provide us with their newest technology. We are dealing with leading edge technologies, so we understand that as we move from an emerging technology to one that is commercially viable, we will have obstacles to overcome.GreenFuel's 'Emissions-to-Biofuels' process uses naturally occurring algae to capture and reduce flue gas CO2 emissions into the atmosphere. When the algae farm is commercially operational, the algae will be harvested daily and be converted into a broad range of biofuels or high-value animal feed supplements.
Development of an anaerobic digester, biodiesel plant, and dairy subsystems is ongoing with the ethanol plant projected to be under construction later this fall. The total projected investment is expected to be $417 million and will create 161 new jobs.
Schematic: GreenFuel Technologies' idealized scheme to use carbon emissions from power plants to grow algae. Credit: GreenFuel Technologies.
0 Comments:
Post a Comment
Links to this post:
Create a Link
<< Home