Autotrophic and heterotrophic denitrification by a newly isolated strain Pseudomonas sp C27

被引:70
作者
Chen, Chuan [1 ]
Ho, Kuo-Lin [2 ]
Liu, Fa-Chi [2 ]
Ho, Mini [2 ]
Wang, Aijie [1 ]
Ren, Nanqi [1 ]
Lee, Duu-Jong [1 ,2 ]
机构
[1] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China
[2] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan
关键词
Denitrifying sulfide removal; Autotrophic denitrification; Heterotrophic denitrification; Isolated strain; SIMULTANEOUS BIOLOGICAL REMOVAL; INORGANIC SULFUR-COMPOUNDS; THIOSPHAERA-PANTOTROPHA; BED REACTOR; SULFIDE; BACTERIA; NITRATE; TETRATHIONATE; OXIDATION; NITROGEN;
D O I
10.1016/j.biortech.2012.12.027
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
The denitrifying sulfide removal (DSR) process applied autotrophic and heterotrophic denitrification pathways to achieve simultaneous conversion of nitrate to N-2, sulfide to elementary sulfur, and organic substances to CO2. The current bottlenecks impeding the development of DSR process include the need of balanced growth of both autotrophic denitrifiers and heterotrophic denitrifers in the same reactor and the capability of treating wastewaters at fix compositions. This work isolated a strain, identified as Pseudomonas sp. C27 (GenBank accession number GQ241351), which can grow on heterotrophic and mixotrophic media and can perform both autotrophic and heterotrophic denitrification in mixotrophic medium. The C27 strain can grow well on succinate, acetate, malate, priopionate and ethanol and has the optimal growth temperature at 25-30 degrees C and pH at 9.0. Pathways of DSR reactions by C27 were proposed. Discussion on the potential use of the isolated C27 in novel DSR process was available. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:351 / 356
页数:6
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