How far can a few drops of algae oil go?
Maggots and algae could be the sustainable snacks of the futureThe ultimate target, says Schonna Manning, a research assistant professor in molecular biosciences at the University of Texas at Austin, is to displace the reliance on fossil fuels by using bioenergy instead. Manning is also the director of research and development of the university’s, which sells its stock to aquaculture and biotech companies, as well as individual researchers and small business owners.
One of the key problems that Manning cites is that though these ponds may look dense like pea soup, the algae only makes upof the total volume of the pond. The rest of the floating biomass is water. This presents one of the primary challenges in large-scale cultivation of algae: To produce a high density, a lot of water needs to be removed from the equation . From Manning’s estimate, the harvesting and dewatering process can take up 70 percent of capital costs.
According to Josh McCann, an animal science assistant professor at the University of Illinois Urbana-Champaign who is a part of the Springfield project, protein is one of the most expensive macromolecules in feed. If the algae turns out to be cost competitive with the more established feeds, then it could be a cheap but high-quality choice for livestock producers.
Meanwhile, cost remains a cumbersome factor for algae-based biofuel too. Price estimates range depending on the producer and the scale, but so far nothing is close enough to compete with the current national average of $3.53 a gallon of gasoline at pumps. One project, the[Related:Though there isn’t conclusive evidence to prove that algae biofuels emit less greenhouse gasses than fossil fuels when burned, its net carbon dioxide product is less than traditional fuels.
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