Additional crops and new cultivars will be tested as the project continues. We have completed one 418 day continuous production study with potato and have found the method to be satisfactory, as it relates to yields. We have not yet tested nutrient recovery from human waste but are currently preparing for such tests. Plants give off VOCs into the atmosphere and nutrient solution. These compounds vary among species as to the types and amount of materials released.
Microbes are good at breaking down many organic compounds in air and water.
B-SAB is being looked at as a method for processing air from the plant chamber. This is where system feasibility is put to the test. We have tested potato continuous production using recycled nutrients from inedible plant biomass from B-SAB for a 418 day period. Beginning in March 1996 we will begin a test that will span even a longer time, while periodically adding more integration and recycling capabilities. Dr. William Knott, Chief Scientist, Biological Programs.