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Published byNickolas Reynolds Modified over 9 years ago
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Wenqiao (Wayne) Yuan 1, ZJ Pei 2 1 Biological and Agricultural Engineering 2 Manufacturing and Industrial System Engineering Kansas State University 1,600 gal acre -1 year -1 3,100 gal acre -1 year -1 6,500 gal acre -1 year -1
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Why algae Productivity: potentially high End product: transportation fuels Scalability: billion-gallon capacity Problem Cost: very high - $3,000/dry ton Acceptable cost: <$300/dry ton Why? Open ponds Low productivity: 2 g/m 2 -day? Harvesting is a big issue PBRs? Construction cost is enormously high Harvesting is still a problem
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Algae Biofuel Manufacturing in the Ocean (CMMI-0836610) (SGER-Exploratory research on solid carriers for manufacturing algae biofuels in the ocean) Idea for Meeting the Challenge Algae ocean farming Why? “Land”, water, air, sunlight, temperature … Harvesting/dewatering is “easier” Approach Grow algae on/in solid carriers in the ocean Manufacturing Challenge What algae species? What type of solid carrier materials? What designs of solid carrier?
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Species Nanochloropsis sp. Spirulina platensis Ulva lactuca Pleutochrysis carterae Scenedesmus dimorphus Carrier Materials Polystyrene Polyurethane Polyethylene Construction fabric How Rocking shaker system Column reactor Fundamental research needed Mechanism of attachment? Self-aggregation mechanism? Coating? Electrostatic? Special membrane or polymer matrix?
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(A. Ben-Amotz, 2008)
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17.5% 12.5% 20% 50% (Q. Hu and M. Summerfeld, 2008)
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Specific challenge Algae lipid extraction Algae biomass residue utilization Idea for Meeting the Challenge An integrated algae biomass refinery Approach Wet grinding milling for cell disruption Drum drying and extrusion for flaking Counter-current solvent extraction Protein/carbohydrate separation What is the Manufacturing Challenge Wet grinding mill Drum dryer Flake extrusion equipment Oil extraction facility Algae Biorefinery
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