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Electric prompting and control of denitrification
Author(s) -
Sakakibara Yutaka,
Kuroda Masao
Publication year - 1993
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260420418
Subject(s) - denitrification , denitrifying bacteria , nitrate , electrolysis , chemistry , electrolysis of water , hydrogen , inorganic chemistry , microorganism , environmental chemistry , electrode , nitrogen , bacteria , organic chemistry , biology , electrolyte , genetics
The effectiveness of a denitrification process which is driven and controlled by an electric current is demonstrated. Denitrifying microorganisms were immobilized on a carbon electrode and hydrogen was produced through the electrolysis of water. The hydrogen was utilized for the reduction of nitrate to N 2 . The denitrification rate was a linear function of the electric current, and it was shown that about 1 mol of electron reduces 0.2 mol of nitrate to N 2 gas. These results exhibit that the proposed process is simple and feasible, especially for the treatment of low‐strength nitrate solutions. © 1993 John Wiley & Sons, Inc.