Modelling FLOCponics systems: Towards improved water and nitrogen use efficiency in biofloc-based fish culture

Pinho, Sara M.; Lima, Jéssica Pacheco de; Tarigan, Nurhayati Br; David, Luiz H.; Portella, Maria Célia; Keesman, Karel J.

doi:10.1016/j.biosystemseng.2023.03.022

Cited by 8 publications

(2 citation statements)

References 55 publications

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“…Among intensive production, the active use of biofloc technology (BFT) offers the possibility of minimal water exchange along with reduced feed intake for cost-effective and sustainable aquaculture development [4][5][6][7]. It was calculated that the water consumption/kg tilapia in a flow-through system (water flow of 0.6 L/day) was 42 times higher than that in BFT under zero water exchange [8].…”

Section: Introduction 1backgroundmentioning

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: Introduction 1backgroundmentioning

confidence: 99%

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

Li,

Zhang,

Chen

et al. 2023

Fishes

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show abstract

“…Another possibility for sustainable aquaculture is the combination of the BFT and AP systems, coined as FLOCponics (FP), to harness the synergistic benefits and address some of the limitations associated with each system individually [4]. FP system aims to optimize nutrient recycling, enhance productivity, and improve water quality through the coexistence of BFT and AP components [5][6][7][8][9][10][11]. Thus, the integration of these two systems is a promising approach for increasing food production in a sustainable and environmentally friendly manner.…”

Section: Introductionmentioning

confidence: 99%

Productivity of Fish and Crop Growth and Characteristics of Bacterial Communities in the FLOCponics System

Hwang,

Park,

Jeong

et al. 2023

Fishes

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Aquaponics (AP) and biofloc technology (BFT) systems rely heavily on bacterial communities to break down organic matter and cycle nutrients that are essential for fish and plant growth. The functional roles of bacterial communities in aquaculture systems are critical to their sustainable operation. Currently, the research on the combination of BFT and AP systems called FLOCponics (FP) is lacking, thereby hindering our ability to optimize their performance. Here, several characteristics (productivity of fish and crops, physicochemical properties of water, and bacterial community) in FP systems cultivating Japanese eel (Anguilla japonica) and leaf lettuce Caipira (Lactuca sativa) were compared to those in the BFT system. Additionally, the effect of fish density on the FP system was investigated. The results indicated that the FP system was more productive than the BFT system. Fish growth rate was highest in the FP system (52.6%), and the average body weight of eels was 168.2 ± 26.8 g in the FP system compared to 140.3 ± 27.0 g in the control (BFT, 5 kg/m2). However, increasing fish density resulted in lower growth rates, with a growth rate of 20.6% observed in the high-density (20 kg/m2) experimental group. The bacterial composition was also significantly different between the systems and fish densities, suggesting that bacterial communities may be closely related to the performance of the aquaponics system.

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Effect of Biofloc Technology Enriches the Growth of Litopenaeus vannamei (Boone, 1931)

Marimuthu,

Puvaneswari,

Lakshmanan

2023

Appl Biochem Biotechnol

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Modelling FLOCponics systems: Towards improved water and nitrogen use efficiency in biofloc-based fish culture

Cited by 8 publications

References 55 publications

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

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

Productivity of Fish and Crop Growth and Characteristics of Bacterial Communities in the FLOCponics System

Effect of Biofloc Technology Enriches the Growth of Litopenaeus vannamei (Boone, 1931)

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