Denitrification and neutralization with an electrochemical and biological reactor

Y. Sakakibara*, K. Araki, T. Tanaka, T. Watanabe, M. Kuroda

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

32 Citations (Scopus)


Denitrifying microorganisms were immobilized with a sodium alginate gel on a cathode electrode, and electric current was applied using a carbon electrode as the anode, Biological reductions of nitrate through the use of H2 at the cathode and formations of inorganic carbons at the anode were observed. Experimental results showed that oxidation of carbon electrode to CO2 was favorable for developing anoxic conditions and to neutralize alkalinity formed during denitrification. Several volts of potential was needed to operate the reactor.

Original languageEnglish
Pages (from-to)151-155
Number of pages5
JournalWater Science and Technology
Issue number6 pt 6
Publication statusPublished - 1994 Dec 1
Externally publishedYes
EventProceedings of the 17th Biennial Conference of the International Association on Water Quality. Part 1 - Budapest, Hung
Duration: 1994 Jul 241994 Jul 30


  • Carbon electrode
  • Denitrification
  • Electric current
  • Electrochemical bioreactor
  • Nitrate contamination

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology


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