Jump to main content
Jump to site search

Issue 18, 2016
Previous Article Next Article

Hydrazine production by anammox biomass with NO reversible inhibition effects

Author affiliations

Abstract

We explored the production of hydrazine from NO and ammonium by anammox biomass, which normally converts ammonium and nitrite to N2 gas under anaerobic conditions. The key step was reversibly inhibiting cytochrome c in anammox biomass via exposure to NO gas or NO-EDTA. The conformation of cytochrome c was changed through exposure to NO or NO-EDTA, and this is what interrupted the oxidation of hydrazine to N2, leading to hydrazine accumulation. Experimentally, the maximum hydrazine production climbed to 12 000 and 7800 μg L−1 with the addition of NO and NO-EDTA, respectively. Because the inhibition by NO-EDTA and NO gas was reversible, the normal anammox capacity for nitrogen removal via N2 recovered within 32 and 24 h after NO and NO-EDTA (respectively) were replaced with ammonium and nitrite substrates. These results demonstrate the promise of producing hydrazine via microbial conversion of NO and ammonium.

Graphical abstract: Hydrazine production by anammox biomass with NO reversible inhibition effects

Back to tab navigation

Supplementary files

Article information


Submitted
06 May 2016
Accepted
16 Jun 2016
First published
16 Jun 2016

Green Chem., 2016,18, 4908-4915
Article type
Paper

Hydrazine production by anammox biomass with NO reversible inhibition effects

S. Qiao, X. Yin, T. Tian, R. Jin and J. Zhou, Green Chem., 2016, 18, 4908
DOI: 10.1039/C6GC01261B

Social activity

Search articles by author

Spotlight

Advertisements