Methods and systems for production of organically derived ammonia/ammonium
Disclosed are methods for forming ammonia and ammonium that can be utilized in certifiably organic farming productions according to most if not all known certification standards. Also disclosed are bioreactors that can be utilized in carrying out disclosed methods. Methods and systems utilize obligate anaerobic bacteria to breakdown organic protein substrates, i.e., compounds containing bound nitrogen, to provide nitrogen in an unbound plant available form, and particularly, ammonia and/or ammonium. Obligate anaerobic bacteria include high ammonia producing bacteria such as Peptostreptococcus anaerobius, Clostridium sticklandii , and Clostridium aminophilum.
1. A method for producing ammonia and/or ammonium, comprising:
contacting a substrate with a hyper-ammonia producing obligate anaerobic bacteria, wherein the contacting is in a reduced salt solution formed with an anaerobic gas in an electrochemical cell and under anaerobic conditions,
wherein the substrate comprises nitrogen;
collecting off-gases produced by the bacteria as the bacteria metabolizes the substrate; and
separating the ammonia and/or ammonium from the off-gasses, wherein the substrate comprises soy protein isolate, blood meal, feather meal, fish meal, yeast extract, or combinations thereof, and wherein the hyper-ammonia producing obligate anaerobic bacteria is selected from the group consisting of Peptostreptococcus anaerobius, Clostridium sticklandii, Clostridium aminophilum , and combinations thereof.
2. The method of claim 1 , further comprising utilizing the ammonia and/or ammonium for agricultural purposes.
3. The method according to claim 2 , wherein the agricultural purposes are organic agricultural purposes.
4. The method of claim 1 , wherein the salt solution is reduced in oxidation/reduction potential to a potential of between −100 mV and −200 mV.
5. The method of claim 1 , wherein the substrate contacts the hyper-ammonia producing obligate anaerobic bacteria at a pH of between 6 and 8.
6. The method according to claim 1 , wherein the substrate contacts the hyper-ammonia producing obligate anaerobic bacteria at a temperature of between 35° C. and 45° C.
7. The method according to claim 1 , further comprising agitating the solution as the substrate contacts the hyper-ammonia producing obligate anaerobic bacteria.
8. The method of claim 1 , wherein the substrate is an organic protein substrate comprising nitrogen.
9. The method according to claim 1 , wherein the hyper-ammonia producing obligate anaerobic bacteria is a type of bacteria naturally found in the rumen of an animal.
10. The method of claim 1 , wherein the ammonia and/or ammonium are separated from the off-gasses with a fractional distillation process.
11. The method according to claim 1 , wherein the salt of the reduced salt solution comprises KH 2 PO 4 , Na 2 SO 4 , NaCl, MgSO 4 *7H 2 O, CaCl 2 *H 2 O, or mixtures thereof.
12. The method of claim 1 , wherein the substrate is carried to the reduced salt solution with an anaerobic carrier gas.