Removing ammonium from aquaculture ponds using suspended biocarrier-immobilized ammonia-oxidizing microorganisms
文献类型： 外文期刊
作者： Lu, Shimin 1 ; Liao, Mingjun 1 ; Xie, Congxin 1 ; He, Xugang 1 ; Li, Dapeng 1 ; Liu, Quansheng 1 ; Li, Ruijiao 1 ;
作者机构： 1.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China
2.Chinese Acad Fishery Sci, Fishery Machinery & Instrument Res Inst, Shanghai 200092, Peoples R China
3.Hubei Univ Technol, Coll Resource & Environm Engn, Wuhan 430068, Peoples R China
4.Shannxi Fisheries Inst, Xian, Peoples R China
关键词： Ammonium ion removal;Ammonia-oxidizing bacteria;Polyethylene filter cotton;Suspended biocarrier
期刊名称：ANNALS OF MICROBIOLOGY （ 影响因子：2.112； 五年影响因子：2.151 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： In this study, polyethylene filter cotton (PFC) was used as a suspended biocarrier to remove ammonium from aquaculture ponds. The concentration of the ammonia-oxidizing bacteria (AOB amoA gene reached similar to 10(7) copies cm(-3) in the PFC after 16-19 days of incubation, whereas only 10(1)-10(2) copies cm(-3) were present in the aquaculture water. The effects of temperature, pH, and dissolved oxygen (DO) concentration on the nitrification rate were evaluated in the laboratory. The nitrification rate of PFC enriched with AOB reached 0.035 +/- 0.002 mg N cm(-3) PFC h(-1) measured at pH 7.0-8.5, 28 degrees C, and a DO concentration of 6.0-7.0 mg L-1. These results suggest that the use of PFC as a suspended biocarrier in aquaculture ponds is a feasible and cheap method for removing ammonium ion in situ.
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