More on algae based Bio diesel.......
Algae makes oil naturally. Raw algae can be processed to make biocrude, the renewable equivalent of petroleum, and refined to make gasoline, diesel, jet fuel, and chemical feedstocks for plastics and drugs. Indeed, it can be processed at existing oil refineries to make just about anything that can be made from crude oil.
Alternatively, strains of algae that produce more carbohydrates and less oil can be processed and fermented to make ethanol, with leftover proteins used for animal feed.
The theoretical potential is clear. Algae can be grown in open ponds or sealed in clear tubes, and it can produce far more oil per acre than soybeans, a source of oil for biodiesel. Algae can also clean up waste by processing nitrogen from wastewater and carbon dioxide from power plants. What's more, it can be grown on marginal lands useless for ordinary crops, and it can use water from salt aquifers that is not useful for drinking or agriculture.
New genomic and proteomic technologies make it much easier to understand the mechanisms involved in algae-oil production. One of the challenges researchers have faced is that while some types of algae can produce large amounts of oil--as much as 60 percent of their weight--they only do this when they're starved for nutrients. But when they're starved for nutrients, they lose another of their attractive features: their ability to quickly grow and reproduce. Researchers hope to understand the molecular switches that cause increased oil production, with the added hope of triggering it without starving the algae. This could dramatically increase oil production and drive down prices.
A better understanding of biology may help researchers address another problem. The cheapest way to grow algae is in open ponds. But open ponds full of nutrients invite other species to take over, competing with the algae and cutting down production. When this and other problems are solved algae ponds could be our future oil wells.
Alternatively, strains of algae that produce more carbohydrates and less oil can be processed and fermented to make ethanol, with leftover proteins used for animal feed.
The theoretical potential is clear. Algae can be grown in open ponds or sealed in clear tubes, and it can produce far more oil per acre than soybeans, a source of oil for biodiesel. Algae can also clean up waste by processing nitrogen from wastewater and carbon dioxide from power plants. What's more, it can be grown on marginal lands useless for ordinary crops, and it can use water from salt aquifers that is not useful for drinking or agriculture.
New genomic and proteomic technologies make it much easier to understand the mechanisms involved in algae-oil production. One of the challenges researchers have faced is that while some types of algae can produce large amounts of oil--as much as 60 percent of their weight--they only do this when they're starved for nutrients. But when they're starved for nutrients, they lose another of their attractive features: their ability to quickly grow and reproduce. Researchers hope to understand the molecular switches that cause increased oil production, with the added hope of triggering it without starving the algae. This could dramatically increase oil production and drive down prices.
A better understanding of biology may help researchers address another problem. The cheapest way to grow algae is in open ponds. But open ponds full of nutrients invite other species to take over, competing with the algae and cutting down production. When this and other problems are solved algae ponds could be our future oil wells.
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