The effect of different carbon sources on water quality, microbial community and structure of biofloc systems

Deng, Min; Chen, Jieyu; Gou, Jingwei; Hou, Jie; Li, Dapeng; He, Xinyi

doi:10.1016/j.aquaculture.2017.09.030

Cited by 125 publications

(88 citation statements)

References 31 publications

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“…Earlier, Burford, Thompson, McIntosh, Bauman, and Pearson () reported that during the later culture period nitrifying bacteria sets‐in and take upper hand in the control of TAN level. Recently, Deng et al () reported a higher level of ammonia‐oxidizing bacteria (AOB) in biofloc groups using a metagenomics approach with specifically designed primers for AOB. Hence, to have a better understanding of nitrogen removal in biofloc, periphyton, and integrated system, a holistic approach to delineate the role of photoautotrophs, chemoautotrophs and heterotrophs is worth for investigation.…”

Section: Discussionmentioning

confidence: 99%

Integration of substrate in biofloc based system: Effects on growth performance, water quality and immune responses in black tiger shrimp, Penaeus monodon culture

Kumar

Anand

et al. 2019

Aquac Res

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To evaluate effect of substrate integration in biofloc based system, a 52‐day growth experiment was conducted using black tiger shrimp, Penaeus monodon juveniles (3.32 ± 0.07 g). The factorial design consisted of floc, F (with or without) as first factor and substrate (bamboo mat, B; nylon mesh, N; and without substrate) as second factor. This resulted six treatments; F + B, F + N, F, B, N and a control without biofloc and substrate. Shrimps were stocked at 110 nos. m–3 in Fibre Reinforced Plastic (FRP) tanks and, rice flour was used as carbon source in biofloc based treatments. Incorporation of nylon mesh and bamboo mat in biofloc system trapped 31.3%–38.6% and 8.5%–13.5% total suspended solids respectively and reduced bottom solid deposition. Among the substrate based groups, significantly better development of biofilm with higher microbial population noticed in F + B compared with nylon mesh. Similarly, significantly higher final growth (p < 0.01) was recorded in F + B system followed by F + N while no significant difference in body weight recorded among floc, F or substrate based groups (B, N). Biofloc and substrate integration (F + B and F + N) resulted significantly (p < 0.01) lower feed conversion ratio compared to control and floc. Incoporation of bamboo substrate in biofloc, (F + B) improved shrimp immune responses through higher hemocyte counts and prophenoloxidase activity compared to other treatments. The study revealed that integration of substrate in the biofloc system improved growth performance, FCR and immune parameters in shrimp by trapping the suspended biofloc particles, better water quality parameters, enhanced biofilm growth and provision of quality natural food.

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Section: Discussionmentioning

confidence: 99%

Integration of substrate in biofloc based system: Effects on growth performance, water quality and immune responses in black tiger shrimp, Penaeus monodon culture

Kumar

Anand

et al. 2019

Aquac Res

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“…In this study, the predominant phyla were Proteobacteria, Bacteroidetes and Verrucomicrobia and Actinobacteria, which were the common shared phyla in the BFT systems [19]. Proteobacteria, the most common shared phylum in the BFT systems, played an important role in the assimilation of TAN and the mineralization of organic compounds, especially in the wastewater treatment of bioflocs [42].…”

Section: Evolution Of Bacterial Community Structurementioning

confidence: 62%

“…An Imhoff cone (1000-0010, Nalgene) was used to determine the bioflocs volume (BFV) which reflected the volume occupied by the flocs in 1 L of reactor water after 30 min of sedimentation [19]. Total suspended solids (TSS) were analyzed following the standard methods for water and wastewater analysis [23].…”

Section: Bioflocs Parameters and Measurement Of Biomassmentioning

confidence: 99%

“…The microorganisms are the main component and play a key role in bioflocs. Heterotrophic and autotrophic bacteria are involved not only in the biomass concentrations but also in nitrification and denitrification in aquaculture systems [17][18][19]. The C/N operational parameter of biofloc systems directly influences the composition of the microbial community in the bioflocs [20].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Carbon to Nitrogen Ratio on Water Quality and Community Structure Evolution in Suspended Growth Bioreactors through Biofloc Technology

Gou

Hong

Deng

et al. 2019

Water

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Application of biofloc technology could effectively treat wastewater. However, the effect of influent carbon to nitrogen ratio (C/N ratio) on water quality and microbial community structure evolution in suspended growth bioreactors (SGBRs) through biofloc technology is still unclear. Here, we show that the total ammonia nitrogen (TAN) and nitrite nitrogen in the effluent of the C/N 10 treatment was significantly higher than that in the C/N 15, C/N 20 and C/N 25 treatments (p < 0.05). Higher TAN removal efficiency was obtained in treatments of C/N 15, C/N 20 and C/N 25, and there was no accumulation of nitrite nitrogen and nitrate nitrogen. Increasing the C/N ratio strengthened the elimination ability of total phosphorus and chemical oxygen demand (COD). The concentrations of TAN and COD first dropped to the lowest level and then increased slightly within one cycle in all treatments. The accumulation of biomass in the reactors increased with the increasing C/N ratio, indicating that a higher C/N ratio was conducive to microbial proliferation. The 16S rRNA sequencing revealed that the microbial community diversity in SGBRs was significantly higher than that in the natural wastewater (P0). The predominant phylum were Proteobacteria, Bacteroidetes and Verrucomicrobia, but Saccharibacteria occupied a dominant position in the late period of the experiment. Pathogens, such as Aeromonas, Acidovorax, Flavobacterium, and Malikia were significantly decreased after high C/N ratio simulative wastewater treating natural wastewater in the reactors. In summary, the water quality and biomass concentrations in SGBRs can be improved under the conditions of influent C/N ratio, equal to or greater than 15.

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“…Biofloc technology enhances the survival rate of Pseudotropheus saulosi fish (Harini et al, 2016) and nile tilapia (Fleckenstein et al, 2018), as well as increasing nile tilapia immunity (Liu et al, 2018). Biofloc technology application in ornamental fish had been reported on goldfish (Faizullah et al, 2015;Wang et al, 2015), gibel carp Carassius auratus gibelio (Qiao et al, 2018), Pelteobagrus vachelli fish (Deng et al, 2018), and fin barb hybrid lemon fish (Dauda et al, 2018b). Previous experiment of the intensive corydoras fish culture with high density has been performed on the water exchange system with 30%/day and produces the best survival rate with 25 fish/L stocking density, equivalent to 3750 fish/ m 2 (Diatin et al, 2014) and 4500 fish/m 2 using 100%/day water exchange (Diatin et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Biofloc technology on the intensive aquaculture of bronze corydoras ornamental fish Corydoras aeneus with different stocking densities

Diatin

Suprayudi

Budiardi

et al. 2019

Jurnal Akuakultur Indonesia

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Ornamental fish is non consumption fish which is an important source of Indonesian foreign exchange. The objective of this study is to analyze the productivity of bronze corydoras Corydoras aeneus ornamental fish through increased stocking density with biofloc technology. The average weight of the experimental corydoras was 0.61 ‒0.72 g with 2.32‒2.40 cm standard length. This study used a randomized design method with biofloc technology treatment in 3000, 4500, and 6000 fish/m2 stocking densities. The results showed that the daily length and weight-growth rate among treatments were not significantly different (P>0.05), while survival rate and the number of fish production on all treatments were significantly different (P<0.05). The water quality during the rearing period, such as temperature, pH, alkalinity, ammonia, nitrite, and nitrate, were in a tolerable range for corydoras culture. The total suspended solids tended to be higher due to higher stocking density. The best productivity using biofloc technology obtained from 6000 fish/m2 stocking density. Keywords: Biofloc technology, Corydoras aeneus, growth rate, stocking density, survival rate. ABSTRAK Ikan hias merupakan produk perikanan non konsumsi yang menjadi sumber devisa Indonesia yang cukup penting. Penelitian ini bertujuan untuk menganalisis produktivitas ikan hias koridoras melalui peningkatan padat tebar dengan teknologi bioflok. Ikan yang digunakan adalah ikan hias koridoras (Corydoras aeneus) berbobot 0,61‒0,72 g dan panjang baku 2,32‒2,40 cm. Penelitian ini menggunakan rancangan acak lengkap dengan perlakuan teknologi bioflok pada padat tebar 3000, 4500, dan 6000 ekor/m2. Hasil penelitian menunjukkan bahwa laju pertumbuhan harian panjang dan bobot antar perlakuan tidak berbeda nyata (P>0,05), sedangkan kelangsungan hidup dan jumlah produksi ikan pada semua perlakuan berbeda nyata (P<0,05). Nilai kualitas air selama pemeliharaan yakni suhu, pH, alkalinitas, amonia, nitrit, dan nitrat yang berada pada kisaran yang cukup baik untuk budidaya ikan. Total padatan tersuspensi cenderung tinggi akibat dari semakin tinggi padat tebar. Produktivitas terbaik pada budidaya ikan koridoras dengan teknologi bioflok adalah pada padat tebar 6000 ekor/m2. Kata kunci: Corydoras aeneus, kelangsungan hidup, padat tebar, pertumbuhan, teknologi bioflok

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The effect of different carbon sources on water quality, microbial community and structure of biofloc systems

Cited by 125 publications

References 31 publications

Integration of substrate in biofloc based system: Effects on growth performance, water quality and immune responses in black tiger shrimp, Penaeus monodon culture

Integration of substrate in biofloc based system: Effects on growth performance, water quality and immune responses in black tiger shrimp, Penaeus monodon culture

Effect of Carbon to Nitrogen Ratio on Water Quality and Community Structure Evolution in Suspended Growth Bioreactors through Biofloc Technology

Biofloc technology on the intensive aquaculture of bronze corydoras ornamental fish Corydoras aeneus with different stocking densities

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