Simultaneous heterotrophic nitrification and aerobic denitrification by bacterium Rhodococcus sp CPZ24

被引：265

作者：

Chen, Peizhen ^{[2
]}

Li, Ji ^{[2
]}

Li, Qing X. ^{[3
]}

Wang, Yingchun ^{[1
]}

Li, Shaopeng ^{[4
]}

Ren, Tianzhi ^{[1
]}

Wang, Ligang ^{[1
]}

机构：

[1] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

[2] China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China

[3] Univ Hawaii Manoa, Dept Mol Biosci & Bioengn, Honolulu, HI 96822 USA

[4] China Univ Min & Technol, Coll Geosci & Surveying Engn, Beijing 100083, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 116卷

关键词：

Heterotrophic nitrification; Aerobic denitrification; Rhodococuus sp; WASTE-WATER TREATMENT; FAECALIS NO. 4; NITROGEN REMOVAL; AMMONIUM REMOVAL; CAPABILITY; TAIWAN;

D O I：

10.1016/j.biortech.2012.02.050

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Rhodococcus sp. CPZ24 was isolated from swine wastewater and identified. Batch (0.25 L flask) experiments of nitrogen removal under aerobic growth conditions showed complete removal of 50 mg L-1 ammonium nitrogen within 20 h, while nitrate nitrogen removal reached 67%. A bioreactor (50 L) was used to further assess the heterotrophic nitrification and aerobic denitrification abilities of Rhodococcus sp. CPZ24. The results showed that 85% of the ammonium nitrogen (100 mg L-1) was transformed to nitrification products (NO3--N and NO2--N) (13%), intracellular nitrogen (24%), and gaseous denitrification products (48%) within 25 h. The ammonium nitrogen removal rate was 3.4 mg L-1 h(-1). The results indicate that the strain CPZ24 carries out simultaneous nitrification and denitrification, demonstrating a potential use of the strain for wastewater treatment. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：266 / 270

页数：5

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