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Effects of Marichromatium gracile YL28 on the nitrogen management in the aquaculture pond water
- Source :
- Bioresource technology. 292
- Publication Year :
- 2019
-
Abstract
- Nitrogen pollution in aquaculture needs the efficient and cost-effective in-situ technology. This study aims to apply Marichromatium gracile YL28 to in-situ bioremediation and test its ability to maintain the nitrogen balance in aquaculture. In laboratory aquaculture system, approximately 99.96% of nitrite (1 mg/L) was removed within 7 d through denitrification coupled with assimilatory nitrate reduction. Ammonium (3.5 mg/L) of 95.6% was directly assimilated by YL28 within 7 d. Moreover, in zero exchange water from shrimp (Penaeus vannamei) aquaculture field trials (20 days), YL28 significantly reduced the ammonium accumulation (0.6 mg/L) and 99.3% of nitrite (1.25 mg/L). Toxicological studies with the Institute of Cancer Research (ICR) mice and Oryzias melastigma indicated that M. gracile YL28 can be safely applied in aquatic ecosystems. All results demonstrate that strain YL28 has high promise for future applications of removing inorganic nitrogen and maintaining the nitrogen balance from in-situ aquaculture.
- Subjects :
- 0106 biological sciences
Nitrogen balance
Environmental Engineering
Denitrification
Nitrogen
Bioengineering
Aquaculture
010501 environmental sciences
01 natural sciences
chemistry.chemical_compound
Mice
Bioremediation
010608 biotechnology
Animals
Ammonium
Nitrite
Ponds
Waste Management and Disposal
Ecosystem
0105 earth and related environmental sciences
Renewable Energy, Sustainability and the Environment
business.industry
Aquatic ecosystem
General Medicine
Shrimp
chemistry
Environmental chemistry
business
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 292
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....81640af98c8e2510ff8dfa7b9ca1f29e