Effects of dissolved organic carbon and total ammonia nitrogen concentrations with the same DOC/TAN on biofloc performance

Luo, Guozhi; Li, Jiayang; Xu, Jinxiang; Liu, Wenchang; Tan, Hongxin

doi:10.1016/j.aquaculture.2023.739713

Cited by 8 publications

(2 citation statements)

References 37 publications

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“…BFT largely depends on organic carbon sources for the maintenance of heterotrophic bacteria. The major driver of floc formation is the growth of heterotrophic bacteria dependent on supplied carbon [46,47]. Thus, additional carbon sources are introduced to the BFT tank, offering a suitable C/N ratio (Figure 1).…”

Section: Components Of a Bft Systemmentioning

confidence: 99%

Optimized Utilization of Organic Carbon in Aquaculture Biofloc Systems: A Review

Li,

Zhang,

Chen

et al. 2023

Fishes

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Biofloc technology (BFT) as an efficient aquaculture alternative is attracting attention for boosting biosecurity with minimal water exchange and reduced feed intake. BFT relies on applying organic carbon to maintain a high C/N ratio above 10, which allows heterotrophs to assimilate toxic nitrogen. A high percentage of carbon loss is thus generated from BFT. For this review, a thorough search of the relevant literature was conducted to gather valuable information on the optimization of carbon utilization. The keywords searched included ‘BFT’, ‘carbon use efficiency’, ‘carbon conversion’, ‘carbon retention’, ‘carbon emission’, ‘carbon loss’, and ‘carbon release’. The current review discusses the possible effects of various C/N ratios, carbon types, addition strategies, and technology integration with respect to the optimized carbon utilization in BFT. Given the extreme lack of accessible research, it was concluded that the carbon utilization in BFT is still in its initial research stage. Anyhow, this review sheds light on plausible approaches for boosted carbon utilization by adopting slow-release carbon, reducing carbon input, integrating with other technologies, and enhancing interactions between functional microbes within BFT, thereby contributing to sustainable aquaculture.

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Section: Components Of a Bft Systemmentioning

confidence: 99%

Optimized Utilization of Organic Carbon in Aquaculture Biofloc Systems: A Review

Li,

Zhang,

Chen

et al. 2023

Fishes

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“…Fish stress and mortality have been reduced by improving water quality, reducing water changes, avoiding invasion by exotic pathogenic microorganisms, and reducing disease outbreaks [26]. On the one hand, biofilm aquaculture technology can provide shade for aquaculture objects, reduce their stress and swimming, and reduce energy consumption; on the other hand, microorganisms on the biofilm can be formed into biofilm bioflocs through bioflocculation combined with organic debris and suspended matter in the aquaculture pond, which can be ingested by aquaculture objects, thus realizing the secondary utilization of feed protein and greatly improving feed utilization [27,28]. In this experiment, both largemouth bass and Japanese eel treatment groups were better than the control group.…”

Section: Effectiveness Of Breeding To Increase Productionmentioning

confidence: 99%

Application of Biofilm Water Conservation and Emission Reduction Technology in the Pond Culture of Largemouth Bass and Japanese Eel

Wang,

Jiang

2023

Sustainability

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This study investigates the water-saving and emission-reduction effects of biofilm technology on the pond culture of largemouth bass (Micropterus pallidus) and Japanese eel (Anguilla japonica) using a combination of biofilm water purification grids and a complex microbial preparation. The results show that during the 150-day largemouth bass aquaculture trial, the TN, TAN, TP, nitrite, and LP in the treatment group were significantly lower than those in the control group by 26.2%, 74.7%, 53.9%, 30.7%, and 59.1% (p < 0.01), respectively. During the 145-day aquaculture trial of Japanese eel, the TN, TAN, and TP levels in the treatment group were significantly lower than those in the control group by 30.1%, 68.6%, and 18.7% (p < 0.01), respectively. The nitrite and COD levels were also significantly lower in the treatment group than in the control group by 18.3% and 16.0% (p < 0.05). In addition, largemouth bass and Japanese eel tailwater nitrogen and phosphorus discharges were significantly reduced and culture yields were significantly increased. This biofilm pond culture technology has advantages such as low cost, water saving and emission reduction, increased production, ease of operation, and a wide range of applications.

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Evaluating the interactive effect of inoculum and C/N adjustment strategy on water quality and growth performance of Litopenaeus vannamei in biofloc system

Mohammadi,

Zahedi,

Krummenauer

2024

Aquacult Int

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Effects of dissolved organic carbon and total ammonia nitrogen concentrations with the same DOC/TAN on biofloc performance

Cited by 8 publications

References 37 publications

Optimized Utilization of Organic Carbon in Aquaculture Biofloc Systems: A Review

Optimized Utilization of Organic Carbon in Aquaculture Biofloc Systems: A Review

Application of Biofilm Water Conservation and Emission Reduction Technology in the Pond Culture of Largemouth Bass and Japanese Eel

Evaluating the interactive effect of inoculum and C/N adjustment strategy on water quality and growth performance of Litopenaeus vannamei in biofloc system

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