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首页> 外文期刊>Journal of environmental sciences >Heterotrophic ammonium removal characteristics of an aerobic heterotrophic nitrifying-denitrifying bacterium, Providencia rettgeri YL
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Heterotrophic ammonium removal characteristics of an aerobic heterotrophic nitrifying-denitrifying bacterium, Providencia rettgeri YL

机译：好氧异养硝化反硝化细菌Providencia rettgeri YL的异养铵去除特性

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摘要

Bacterium Providencia rettgeri YL was found to exhibit an unusual ability to heterotrophically nitrify and aerobically denitrify various concentrations of ammonium ((NH_4)~+-N). In order to further understand its removal ability, several experiments were conducted to identify the growth and ammonium removal response at different carbon to nitrogen (C/N) mass ratios, shaking speeds, temperatures, ammonium concentrations and to qualitatively verify the production of nitrogen gas using gas chromatography techniques. Results showed that under optimum conditions (C/N 10, 30℃, 120 r/min), YL can significantly remove low and high concentrations of ammonium within 12 to 48 h of growth, respectively. The nitrification products hydroxylamine (NH_2OH), nitrite ((NO_2)~-) and nitrate ((NO_3)~-) as well as the denitrification product, nitrogen gas (N2), were detected under completely aerobic conditions.
机译：细菌普罗维登斯氏菌YL具有不同寻常的异氮硝化和需氧反硝化各种浓度（（NH_4）〜+ -N）的能力。为了进一步了解其去除能力，进行了一些实验，以确定在不同的碳氮比（C / N），振荡速度，温度，铵浓度下的生长和铵去除响应，并定性验证氮气的产生使用气相色谱技术。结果表明，在最佳条件下（C / N 10、30℃，120 r / min），YL可以在生长的12至48 h内显着去除低浓度和高浓度的铵。在完全好氧条件下检测到硝化产物羟胺（NH_2OH），亚硝酸盐（（NO_2）〜-）和硝酸盐（（NO_3）〜-）以及反硝化产物氮气（N2）。

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