Good article describing the key players in the industry.
NREL’s Aquatic Species Program concluded that open ponds are the optimal economic design and used open ponds for its experiments and economic models.Algae can be grown in natural or man-made ponds. The advantage is cost: open pond growth requires less capital equipment than other techniques. The disadvantage comes in quality control. Raceway ponds, shaped like horse tracks, for growing algae for human consumption are not yet economical for fuel production while nutraceutical algae can sell for several thousand dollars a ton.Raceway ponds, usually lined with plastic or cement, are about 20 to 35 cm deep to ensure adequate exposure to sunlight. Paddlewheels provide motive force and keep the algae suspended in the water. The ponds are supplied with water and nutrients, and mature algae are continuously removed at one end.NREL’s Aquatic Species Program concluded that open ponds are the optimal economic design and used open ponds for its experiments and economic models. The productivity of raceways is much higher than unmixed algae ponds.
via Greentech Media: Growing Algae: Open Pond vs. Closed Bioreactors | Green Light.



