Effect of ammonia concentration on fermentative hydrogen production by mixed cultures.
The effect of ammonia concentration ranging from 0 to 10 g N/L on fermentative hydrogen production by mixed cultures was investigated in batch tests using glucose as substrate at 35 degrees C and initial pH 7.0. The experimental results showed that during the fermentative hydrogen production, the substrate degradation efficiency increased with increasing ammonia concentration from 0 to 0.01 g N/L. The hydrogen production potential, hydrogen yield and average hydrogen production rate increased with increasing ammonia concentration from 0 to 0.1g N/L. The maximum hydrogen production potential of 291.4 mL, maximum hydrogen yield of 298.8 mL/g glucose and maximum average hydrogen production rate of 8.5 mL/h were all obtained at the ammonia concentration of 0.1g N/L.
Wang
Bo
B
Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, PR China.
Wan
Wei
W
Wang
Jianlong
J
D000641:Ammonia / Q000494:pharmacology*; D019149:Bioreactors / Q000382:microbiology*; D018920:Coculture Techniques / Q000379:methods*; D004305:Dose-Response Relationship, Drug; D005285:Fermentation / Q000187:drug effects; D006859:Hydrogen / Q000378:metabolism*; D012722:Sewage / Q000382:microbiology*
D012722:Sewage; D000641:Ammonia; D006859:Hydrogen