Rup
Freeze Drying is a process by which all the water is drawn out of the cells by first freezing the bacterial culture then drying it under vacuum utilising sublimation where the ice is converted directly to steam (due to the vacuum) and removed. Resultant bacterial powder could then be pressed into tablet form or mixed in a glycerol syrup (no freee water which would allow bacterial growth) or someother treatment depending upon what the bacteria need to survive.
Quote:
so you are saying that, with ammonia, proper dissolved oxygen in the water, right temperature, and right ph level, the nitrobacter and nitrosomonas would grow on its own?
Soultraveler,
Correct, what a lot of people do not realise is how readily bacteria are aerosled into the air from aquatic sources eg, waterfalls, rapids etc and are then blown around by the wind - the water droplets that are capable of carrying bacteria are way to small for us to see as bacteria are typically 1 micron across by 2 to 3 microns long - a micron is one thousanth of a millimeter for those using imperial measurements - and wiegh next to nothing.
The ease with which bacteria are aerosoled is why I refuse to utilise those unhygenic air dryers in toilets etc. Reckon they should be banned.
Woz
Backyard Aquaponics
