Discussion in 'Science and Technology' started by proletarian, Jan 26, 2010.
#37: Algae Make Clean, Renewable Diesel Fuel | Alternative Energy | DISCOVER Magazine
Lets hope they stop using corn. Food prices have climbed because a quarter of the produced corn is wasted on ethanol production.
Evil greedy oil companies. Ex/Mob is probably going to make a profit on it. Algae tax!
Food prices also climbed because of increased fuel costs and fertilizer costs because of increased energy costs. Speculators play a part in the price increase as well.
Because of Corn costs last year cattle and chicken ranches were considering cutting their herds ( or flocks) because the break even point was going over their ability to feed their animals. This was discussed right here on this board in several threads. Especially since Obama is in bed with ethanol by corn plants in his home State.
Would algea farms also work to cut down on the CO2? Just curious if it could help a couple of problems.
I said when the biofuel fad was just starting that it was one of the stupidest moves we could make.
But the algae movement makes it look like small potatoes. You start algae farms in our bodies of water and see how fast we fuck up the world.
"Blooms are also responsible for
consuming much of the oxygen
produced. Fortunately, during
daylight they usually produce
more oxygen than they use,
resulting in a surplus for fish and
other organisms. At night or in
cloudy weather, however, production
of oxygen through photosynthesis
ceases or is greatly reduced,
but the consumption rate does not
change, often resulting in a deficit
in the oxygen “budget.” Under
certain conditions, the level of
oxygen can become critically low
and fish may suffocate or at least
become stressed to the point of
being susceptible to disease."
Yes, such farms would do just that. The algea gets CO2 from the atmosphere, and the CO2 from the diesel is returned to the atmosphere. Cyclic, no sequestered carbon involved.
Once again, Allie demonstrates ignorance and a knee jerk reaction to a reasonable advancement. Do you honestly think that anybody would try that in open waters? Like our lakes or seas? Not only would it fail in the first storm, it would be damned difficult to harvest.
Cultivation of Algae - Photobioreactor - Oilgae - Oil from Algae
Algae can also be grown in a photobioreactor (PBR). A PBR is a bioreactor which incorporates some type of light source. Virtually any translucent container could be called a PBR, however the term is more commonly used to define a closed system, as opposed to an open tank or pond.
It allows more species to be grown, it allows the species that are being grown to stay dominant, and it extends the growing season, only slightly if unheated, and if heated it can produce year round. Because PBR systems are closed, all essential nutrients must be introduced into the system to allow algae to grow and be cultivated.
A PBR can be operated in "batch mode", but it is also possible to introduce a continuous stream of sterilized water containing nutrients, air, and carbon dioxide. As the algae grows, excess culture overflows and is harvested. If sufficient care is not taken, continuous bioreactors often collapse very quickly, however once they are successfully started, they can continue operating for long periods. An advantage of this type of algae culture is that algae in the "log phase" is produced which is generally of higher nutrient content than old "senescent" algae. It can be shown that the maximum productivity for a bioreactor occurs when the "exchange rate" (time to exchange one volume of liquid) is equal to the "doubling time" (in mass or volume) of the algae.
Mebbe dey could build trees dat'll give us all the energy we need...
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