Influence of ammonia nitrogen management strategies on microbial communities in biofloc-based aquaculture systems

Chen, Shengjiang; Sun, Xueqian; Tian, Xiangli; Jiang, Wenwen; Dong, Xuan; Li, Li

doi:10.1016/j.scitotenv.2023.166159

Cited by 5 publications

(2 citation statements)

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“…The diverse aerobic microbial community within BFT water quality plays a major role in the nitrification process, which stabilizes water quality by converting ammonia to nitrite and nitrite to nitrates [11]. In the BFT system, ammonia−nitrogen is removed through three pathways: photoautotrophic removal by algae, autotrophic bacteria that convert ammonia-nitrogen to nitrate-nitrogen, and heterotrophic bacteria that directly convert ammonia-nitrogen to microbial biomass [12]. In particular, heterotrophic bacteria remove ammonia-nitrogen by assimilating it into microbial biomass at high carbon and nitrogen (C:N) ratios, so it is important to increase the C:N ratio by supplying additional carbon sources [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…In the BFT system, ammonia−nitrogen is removed through three pathways: photoautotrophic removal by algae, autotrophic bacteria that convert ammonia-nitrogen to nitrate-nitrogen, and heterotrophic bacteria that directly convert ammonia-nitrogen to microbial biomass [12]. In particular, heterotrophic bacteria remove ammonia-nitrogen by assimilating it into microbial biomass at high carbon and nitrogen (C:N) ratios, so it is important to increase the C:N ratio by supplying additional carbon sources [12][13][14]. The core of BFT is to increase the metabolic ability to remove waste products, such as ammonia, by multiplying heterotrophic bacteria and microbial flocs by adding a carbon source to the breeding water, while converting them into edible biomass for aquaculture organisms [15].…”

Section: Introductionmentioning

confidence: 99%

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Biofloc Application Using Aquaponics and Vertical Aquaculture Technology in Aquaculture: Review

Yu,

Choi,

Lee

et al. 2023

Fishes

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Some aspects of traditional aquaculture have negative impacts on the aquatic environment, leading to pollution and disease outbreaks in farmed organisms. Biofloc technology (BFT) is a closed aquaculture system that utilizes specific microbial communities to remove ammonia emitted from aquaculture organisms or adds carbon to the aquaculture system to improve water quality. BFT has benefits, such as increasing production and improving water quality, and reducing disease spread and pollution, without the need for water exchange. However, there are disadvantages, such as rapid changes in water quality due to accumulation of dissolved nutrients and total suspended soils (TSS) and the requirement for expensive aeration equipment to maintain dissolved oxygen. BFT can be enhanced in value and efficiency by combining it with other aquaculture technologies, such as aquaponics and vertical aquaculture to overcome the disadvantages. The integration of biofloc with technologies from the fourth industrial revolution holds potential for further development, while aquaponics and vertical farming can eliminate geographical limitations and accelerate the urbanization of aquaculture. The integration of aquaponics and vertical aquaculture with BFT has potential for development, accelerating the urbanization of aquaculture and removing geographic limitations.

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