In reply to Jones Beene's message of Fri, 11 Apr 2008 11:44:10 -0700 (PDT): Hi, [snip] >"fed" with the cheapest possible carbon source, which >is NOT going to be airborne CO2, unfortunately, but >could be powdered lignite, or other subgrade of >coal+minerals ($30 ton + shipping)
You have just found another way of mining fossil fuels. You might be better off burning the lignite first, then feeding the CO2 to the algae. BTW they need the carbon to be in the form of CO2. Solids are useless to them. Besides, if they don't take the CO2 from the air, then the whole is no longer carbon neutral, and consequently useless as a means of mitigating global warming. > >The limiting variable for algoil will always be free >carbon, and CO2 from air is too diffuse to be the only >source, plus it raises water acidity too high. Acidity shouldn't be a problem, because by converting the CO2 into algoil, the algae lower the CO2 concentration, and hence the acidity. BTW, as you have previously pointed out, they do better when fed with *additional* CO2, which proves that acidity is not a problem. [snip] Regards, Robin van Spaandonk The shrub is a plant.
