Hydrogen production by Anabaena cylindrica: effects of varying ammonium and ferric ions, pH, and light.

@article{Jeffries1978HydrogenPB,
  title={Hydrogen production by Anabaena cylindrica: effects of varying ammonium and ferric ions, pH, and light.},
  author={Thomas W. Jeffries and H Timourian and Richard L. Ward},
  journal={Applied and environmental microbiology},
  year={1978},
  volume={35 4},
  pages={704-10}
}
Anabaena cylindrica sparged with argon gas produced H2 continuously for 30 days under limited light conditions (6.0 W/m2) and for 18 days under elevated light conditions (32 W/m2) in the absence of exogenous nitrogen. The efficiency of converting visible light energy (32 W/m2) into chemical energy that is trapped as H2 ranged between 0.35 and 0.85% (approximately 13 microliter of H2 per mg [drywt] per h). Ammonium additions (0.2 mM NH4+) at various times destabilized the system and eventually… CONTINUE READING

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