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Heterotrophic nitrification and aerobic denitrification by Diaphorobacter polyhydroxybutyrativorans SL-205 using poly(3-hydroxybutyrate-co-3hydroxyvalerate) as the sole carbon source

文献类型： 外文期刊

作者： Zhang, Shusong 1 ; Sun, Xingbin 1 ; Fan, Yueting 1 ; Qiu, Tianlei 2 ; Gao, Min 2 ; Wang, Xuming 2 ;

作者机构： 1.Northeast Forestry Univ, Coll Life Sci, Harbin 150040, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Beijing Agrobiotechnol Res Ctr, Beijing Key Lab Agr Genet Resources & Biotechnol, Beijing 100097, Peoples R China

3.Minist Agr, Key Lab Urban Agr North, Beijing 100097, Peoples R China

关键词： Diaphorobacter polyhydroxybutyrativorans;Carbon source;Poly(3-hydroxybutyrate-co-3-hydroxyvalerate);Heterotrophic nitrification;Aerobic denitrification

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）

ISSN：

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收录情况： SCI

摘要： A new strain of Diaphorobacter polyhydroxybutyrativorans (strain SL-205) was recently isolated and identified. SL-205 can utilize nitrate and nitrite for denitrification and ammonium for nitrification using poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) as the carbon source under aerobic conditions. SL-205 removed 99.11% of NH4+-derived N (83.90 mg/L), 95.02% of NO3-N (308.24 mg/L), and 84.13% of NO2-N (211.70 mg/L), with average removal rates of 1.73 mg NH4+-N/(L.h), 6.10 mg NO3-N/(L.h), and 4.95 mg NO2-N/(L.h). Nitrogen gas was the primary end-product, with negligible nitrous oxide accumulation during ammonium removal, accounting for 57.85% of the removed NH4+-N and 52.30% of the initial NH4+-N. Moreover, hydroxylamine oxidoreductase, nitrate reductase, and nitrite reductase were detected, further indicating that strain SL-205 underwent heterotrophic nitrification coupled with aerobic denitrification (NH4+ -> NH2OH -> NO2 -> NO3 -> NO2 -> N2O -> N-2). These results support the use of PHBV as a carbon source for nitrogen removal from water and wastewater by strain SL-205. (C) 2017 Elsevier Ltd. All rights reserved.

  • 相关文献

[1]Heterotrophic Denitrification of Nitrate-Contaminated Water Using Different Solid Carbon Sources. Mei-Lin Han,Ying Xu,Tian-Lei Qiu. 2013

[2]Denitrification of Nitrate-Contaminated Water Using Poly (3-Hydroxybutyrate-co-3-Hydroxyvalerate) as Carbon Source. Lijiao Sun,Lanhe Zhang,Xuming Wang. 2012

[3]Nitrate removal from groundwater using solid-phase denitrification process without inoculating with external microorganisms. Wang, X. M.,Wang, J. L.. 2013

[4]Heterotrophic Denitrification of Nitrate-Contaminated Water Using Different Solid Carbon Sources. Xu, Ying,Li, Jun,Xu, Ying,Qiu, Tian-Lei,Han, Mei-Lin,Wang, Xu-Ming. 2011

[5]Simultaneous removal of nitrate and pentachlorophenol from simulated groundwater using a biodenitrification reactor packed with corncob. Wang, Xuming,Xing, Lijun,Qiu, Tianlei,Han, Meilin.

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