Nitrogen removal performance and microbial diversity of bioreactor packed with cellulosic carriers in recirculating aquaculture system

文献类型： 外文期刊

第一作者： Chen, Zhao

作者： Chen, Zhao;Chang, Zhiqiang;Qiao, Ling;Wang, Jiajia;Yang, Ligan;Li, Jian;Chen, Zhao;Chang, Zhiqiang;Qiao, Ling;Wang, Jiajia;Li, Jian;Yang, Ligan;Song, Xiefa;Liu, Yunfeng

作者机构：

关键词： Solid-phase denitrification; Stable isotope; Microbial community; Functional gene; RAS

期刊名称：INTERNATIONAL BIODETERIORATION & BIODEGRADATION （ 影响因子：4.32； 五年影响因子：4.719 ）

ISSN： 0964-8305

年卷期： 2021 年 157 卷

页码：

收录情况： SCI

摘要： In this research, a solid-phase denitrification reactor (SPDR) packed with corrugated paperboard was introduced into the recirculating aquaculture system (RAS) of Litopenaeus vannamei for nitrate removal. Results showed that 82.88% of the nitrogen was removed from the culture water with the denitrification rate of 0.74 mg L-1 .d(-1) and the concentration of nitrate was controlled at 2.31 +/- 1.00 mg L-1. High throughput sequencing analysis showed that the corrugated paperboard was degraded by Lachnospiraceae, Saprospiraceae, Exiguobacterium, Mesoflavibacter, etc. to provide carbon source for denitrifying bacteria, including Rhizobiaceae, Rhodobacteraceae, Bacillus, Nitratireductor, Sphingobium, Marinicella, Desulfovibrio, Marinobacter, and Labrenzia. The abundance of the functional genes amoA, nirK, and nosZ indicated that nitrogen can be efficiently converted into N-2 in the SPDR.

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