Ammonium as a sustainable proton shuttle in bioelectrochemical systems.

@article{CordRuwisch2011AmmoniumAA,
  title={Ammonium as a sustainable proton shuttle in bioelectrochemical systems.},
  author={Ralf Cord-Ruwisch and Yingyu Law and K. Y. Cheng},
  journal={Bioresource technology},
  year={2011},
  volume={102 20},
  pages={
          9691-6
        }
}
This work examines a pH control method using ammonium (NH(4)(+)) as a sustainable proton shuttle in a CEM-equipped BES. Current generation was sustained by adding NH(3) or ammonium hydroxide (NH(4)OH) to the anolyte, controlling its pH at 7. Ammonium ion migration maintained the catholyte pH at approximately 9.25. Such NH(4)(+)/NH(3) migration accounted for 90±10% of the ionic flux in the BES. Reintroducing the volatilized NH(3) from the cathode into the anolyte maintained a suitable anolyte pH… CONTINUE READING
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