Biological removal of nitrate and ammonium under aerobic atmosphere by Paracoccus versutus LYM

被引：134

作者：

Shi, Zhuang ^{[1
]}

Zhang, Yu ^{[1
]}

Zhou, Jiti ^{[1
]}

Chen, Mingxiang ^{[1
]}

Wang, Xiaojun ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Environm Sci & Technol, Minist Educ, Key Lab Ind Ecol & Environm Engn, Dalian 116024, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 148卷

基金：

中国国家自然科学基金;

关键词：

Nitrogen removal; Aerobic denitrification; Heterotrophic nitrification and aerobic denitrification; Paracoccus versutus; NITRIFYING-DENITRIFYING BACTERIUM; HETEROTROPHIC NITRIFICATION; NITROGEN REMOVAL; ALCALIGENES-FAECALIS; LOW-TEMPERATURE; DENITRIFICATION; WATER; OXIDE; REDUCTASE; STRAIN;

D O I：

10.1016/j.biortech.2013.08.052

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The bacterium isolated from sea sludge Paracoccus versutus LYM was characterized with the ability of aerobic denitrification. Strain LYM performs perfect activity in aerobically converting over 95% NO3--N (approximate 400 mg L-1) to gaseous products via nitrite with maximum reduction rate 33 mg NO3--N L-1 h(-1). Besides characteristic of aerobic denitrification, strain LYM was confirmed in terms of the ability to be heterotrophic nitrification and aerobic denitrification (HNAD) with few accumulations of intermediates. After the nitrogen balance and enzyme assays, the putative nitrogen pathway of HNAD could be NH4+ -> NH2OH -> NO2- -> NO3- then NO3- was denitrified to gaseous products via nitrite. N-2 was sole denitrification product without any detection of N2O by gas chromatography. Strain LYM could also simultaneously remove ammonium and additional nitrate. Meanwhile, the accumulated nitrite had inhibitory effect on ammonium reduction rate. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：144 / 148

页数：5

共 36 条

[31] Heterotrophic nitrification and aerobic denitrification at low temperature by a newly isolated bacterium, Acinetobacter sp HA2 [J].