Open AccessHalomonas venusta Coupled Operation of Nitrogen Removal and Electricity Generation under High Salt
Author(s) -
Jinfeng Wang,
Wei Feng Liu,
Le Bo,
Linghua Zhang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/647/1/012080
Subject(s) - halomonas , denitrification , halophile , chemistry , wastewater , salt (chemistry) , pulp and paper industry , aerobic denitrification , effluent , nitrogen , environmental science , environmental engineering , bacteria , biology , denitrifying bacteria , organic chemistry , engineering , genetics
In this paper, the moderately halophilic bacterium Halomonas venusta DSM 4743 T was selected to optimize the N removal conditions and the electricity generation conditions in the MFC, and conduct the coupled operation of the electricity generation and denitrification of MFC high-salt wastewater. The results showed when sodium succinate was used as carbon source, C/N was 5:1, pH was 9, and NaCl was 30 g/L, 93.22% N removal rate was obtained at 168 h. The maximum output voltage of MFC is 346 mV under the conditions of 6 g/L NaAc, 50 μm riboflavin, pH=8 and 30 g/L NaCl. H. venusta DSM 4743 T MFC generates electric denitrification coupled operation, with the maximum output voltage up to 224 mV and the denitrification rate of 53.5%.