Biological Nitrogen Removal Database

Nitrification

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Experimental setup

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Influent:High nitrate concentration wastewater

Anammox system:Simultaneous nitrification and denitrification (SND)

Anammox reactor:nan

Medium:Suspension

Culture taken from:Sludge samples of saline-alkali lak

Microorganism cultured:Halomonas campisalis strain ha3

Respiration:Aerobic

Electron donor:Ammonium sulphate

Electron acceptor:Oxygen, Sodium nitrite, Potassium nitrate

PH:9

Experimental Information

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Ammonia removal rate: 8.33 mg L-1 h-1

Nitrate removal rate:nan

Ammonia Removal efficiency (%):nan

Nitrate Removal efficiency (%):nan

Total Nitrogen Removal (%):nan

Carbon Source:Sodium succinate

Final products:Nitrogen, Nitrous oxide

Information about Article

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Major findings:The halophilic strain isolated in the study was identified as Halomonas campisalis ha3. It had the ability to carry out heterotrophic nitrification and aerobic denitrification. It was able to survive at a ph 11.0 and high salt concentration (20% w/v NaCl). This strain could therefore be used as a potential aerobic denitrifier for the treatment of saline wastewater.

Authors:Guo et al., 2013

Title:Heterotrophic nitrification and aerobic denitrification by a novel Halomonas campisalis

Pubmed link:Link

Full research link:Link

Abstract:A novel halophilic strain that could carry out heterotrophic nitrification and aerobic denitrification was isolated and named as Halomonas campisalis ha3. It removed inorganic nitrogen compounds (e.g. NO3 (-), NO2 (-) and NH4 (+)) simultaneously, and grew well in the medium containing up to 20 % (w/v) NaCl. PCR revealed four genes in the genome of ha3 related to aerobic denitrification: napA, nirS, norB and nosZ. The optimal conditions for aerobic denitrification were pH 9.0, at 37 °C, with 4 % (w/v) NaCl and sodium succinate as carbon source. The nitrogen removal rate was 87.5 mg NO3 (-)-N l(-1 )h(-1). Therefore, this strain is a potential aerobic denitrifier for the treatment of saline wastewater.