hthuijs wrote:the cost of extraction greatly depends on methods and means and are between $0.05 and 0.25 per gallon of algal oil. The three well known methods are a normal milling process, a pressure vessel and chemicals used. The percentage of extraction of fatty acids depend greatly on the method.
mushroomman wrote:How much does it actually cost to extract the oil from the algae say 500 lbs--2ton quantities
Of course you have to figure-- capital investment upfront & interest on that amount, maintenance. operating cost. energy input etc....
I believe this is a very important expense I'm sure that the best method is yet to be perfected but there should be
some rough numbers say .15/gal algae oil
hi i have just join this forum.
i want to know when cost is $0.05 - .25 per gallon then why it is not in market. what are the reason which hurdle its mass use or production.
Seems all three of these would be avoided if the business plan were to harvest the naturally occuring algae blooms that are beginning to plague the world's seas and oceans.sreevatsansumukhi wrote: Consequently, the real challenges that hinder large-scale, commercial biofuel production
from microalgae are the following three:
• Difficulties in optimal strain selection
• High cost of photobioreactor
• High cost of microalgae harvesting.
Hope this helps !!
Seems all three of these would be avoided if the business plan were to harvest the naturally occurring algae blooms that are beginning to plague the world's seas and oceans.
The algae should be predominantly in the form of plankton which is netted quite nicely with plankton nets. Use sail boats and you don't even expend fuel to harvest it.sreevatsansumukhi wrote:...provided we are able to harvest these algae from the blooms. I think collecting these nuisance algae will be very difficult because of the bottlenecks faced by the open ponds against the bioreactors.
I have always considered supercritical CO2 extraction methods the way to go. I don't believe the plankton NEEDS to be dried to use SC CO2 extraction. TBD.sreevatsansumukhi wrote:...Yet another problem I guess, is the drying of these algae,they work out to be very expensive and significant energy loss.
2% of megatonnes is quite a bit of oil. I somnetimes wish I lived near New Orleans so i could go sailing along the coast with a plankton net and check this out. Anyone on this forum live on the Gulf coast? If so, and if you have or have acess to a boat, please PM me.sreevatsansumukhi wrote:...Moreover, I think that the oil content in these algae are drastically low when compared to the others in use.
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