Hydrogen injection reduces ammonia nitrogen and changes microbial community composition in aquaculture water

Hydrogen injection reduces ammonia nitrogen and changes microbial community composition in aquaculture water

The study aimed to investigate the effect of hydrogen on nitrogen and phosphorus removal and microbial community composition in aquaculture water. Two groups were designed separated: Group H was charged with hydrogen and Group D was set as control. Water samples were collected at 0, 1, 2, 3, 4, 5, 6...

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Bibliographic Details
Published in:Frontiers in Marine Science Vol. 10
Main Authors: Ning, Shengdi, Hu, Junru, Yu, Jie, Huang, Long, Lai, Minjian, Li, Xiangni, Lin, Yongchun, Zhong, Wanqing, Wang, Lei
Format: Journal Article
Language:English
Published: Lausanne Frontiers Research Foundation 24-04-2023
Frontiers Media S.A
Subjects:
Ammonia
ammonia nitrogen removal
Animals
Aquaculture
aquaculture water
Community composition
Denitrification
Fisheries
Fishing
Hydrogen
Hypoxia
Injection
microbial community
Microbiomes
Microorganisms
Nitrates
Nitrification
Nitrogen
nitrogen and phosphorus removal
Phosphorus
Phosphorus removal
Pollutants
Polyculture (aquaculture)
Water analysis
Water quality
Water sampling
Water treatment
China
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Summary:The study aimed to investigate the effect of hydrogen on nitrogen and phosphorus removal and microbial community composition in aquaculture water. Two groups were designed separated: Group H was charged with hydrogen and Group D was set as control. Water samples were collected at 0, 1, 2, 3, 4, 5, 6, and 7 days after hydrogen injection to detect not only the content of total nitrogen, ammonia nitrogen and phosphorus, but also microbial community composition in aquaculture water. Our findings have demonstrated that 7-days’ hydrogen treatment could effectively reduce ammonia nitrogen in aquaculture water. And in Day 7, the concentration of ammonia nitrogen in Group D was 1.66 times as that in Group H. Meanwhile, microbial structures in the water bodies of these two groups were significantly different. The abundance of bacteria such as Proteobacteria, Firmicutes, Bacteroidetes, and Desulphuri a increased clearly in Group H, which means nitrification and denitrification occurred in the effect of hydrogen injection. These findings suggested that hydrogen could significantly improve aquaculture water health and reduce the production of ammonia nitrogen, which means hydrogen could be used as a functional external method to protect the aquaculture environment.
ISSN:2296-7745
2296-7745
DOI:10.3389/fmars.2023.1111067