Effects of recirculation rates on water quality and Oreochromis niloticus growth in aquaponic systems

Trang, Ngô Thụy Diễm; Konnerup, Dennis; Brix, Hans

doi:10.1016/j.aquaeng.2017.05.002

Cited by 44 publications

(22 citation statements)

References 22 publications

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“…The channel catfish (Ictalurus punctatus) was also used by Lewis et al (1978) and Sutton and Lewis (1982) in the USA. It was demonstrated that the quality of the aquaponics water readily met the demands of the different fish species, especially through the use of 'easy-to-produce' fish species such as the blue tilapia (Oreochromis aureus, formerly Sarotherodon aurea) in Watten and Busch (1984); Nile tilapia (Oreochromis niloticus), which was often used in studies with different plant species as a model fish species (Rakocy 1989;Rakocy et al 2003Rakocy et al , 2004Al-Hafedh et al 2008;Rakocy 2012;Villarroel et al 2011;Simeonidou et al 2012;Palm et al 2014aPalm et al , 2014bDiem et al 2017); and also tilapia hybrids-red strain (Oreochromis niloticus x blue tilapia O. aureus hybrids), that were investigated in arid desert environments (Kotzen and Appelbaum 2010; Appelbaum and Kotzen 2016).…”

Section: Fish Productionmentioning

confidence: 99%

Coupled Aquaponics Systems

Palm

Knaus

Appelbaum

et al. 2019

Aquaponics Food Production Systems

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Coupled aquaponics is the archetype form of aquaponics. The technical complexity increases with the scale of production and required water treatment, e.g. filtration, UV light for microbial control, automatic controlled feeding, computerization and biosecurity. Upscaling is realized through multiunit systems that allow staggered fish production, parallel cultivation of different plants and application of several hydroponic subsystems. The main task of coupled aquaponics is the purification of aquaculture process water through integration of plants which add economic benefits when selecting suitable species like herbs, medicinal plants or ornamentals. Thus, coupled aquaponics with closed water recirculation systems has a particular role to fulfil. Under fully closed recirculation of nutrient enriched water, the symbiotic community of fish, plants and bacteria can result in higher yields compared with standalone fish production and/or plant cultivation. Fish and plant choices are highly diverse and only limited by water quality parameters, strongly influenced by fish feed, the plant cultivation area and component ratios that are often not ideal. Carps, tilapia and catfish are most commonly used, though more sensitive fish species and crayfish have been applied. Polyponics and additional fertilizers are methods to improve plant quality in the case of growth deficiencies, boosting plant production and increasing total yield. The main advantages of coupled aquaponics are in the most efficient use of resources such as feed for nutrient input, phosphorous, water and energy as well as in an increase of fish welfare. The multivariate system design approach allows H. W. Palm (*) • U. Knaus (*) • S.

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Section: Fish Productionmentioning

confidence: 99%

Coupled Aquaponics Systems

Palm

Knaus

Appelbaum

et al. 2019

Aquaponics Food Production Systems

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“…Buzby et al (2016) reported that a flow rate at 18.9 m/L reduced biomass of most plant species except cilantro (Coriandrum sativum "Santo"), parsley (Petroselinum crispum "Darki"), and minutina (Plantago coronopus). Similarly, Diem et al (2017) found that 400% recirculation rates reduced the yield of water spinach, but not of canna, especially at high fish stock density. However, their studies did not discuss the causes of the variations among plant species.…”

Section: Plants Require Different Flow Rate Based On Their Growth Ratementioning

confidence: 88%

“…When optimizing flow rate in aquaponics, crop nutritional requirements and uptake ability need to be taken into consideration, a factor that has not been investigated in previous studies [13,[65][66][67]. Some studies demonstrated variations in crop growth as affected by flow rate.…”

Section: Plants Require Different Flow Rate Based On Their Growth Ratementioning

confidence: 99%

Effects of Hydraulic Loading Rate on Spatial and Temporal Water Quality Characteristics and Crop Growth and Yield in Aquaponic Systems

Yang

Kim

2020

Horticulturae

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Aquaponics is a rapidly growing food-production system integrating aquaculture and hydroponic crop production through an energy-intensive water recirculation process. Crop performance and yield in aquaponics are affected by essential and toxic nutrient levels in the root zone, which can be regulated by water flow rate. This study was conducted to examine the effects of hydraulic loading rate (HLR) on water quality and crop growth and yield in recirculating aquaponic systems set at three different loading rates: high (3.3 m 3 /m 2 /day; HFR, which is 12 times lower than recommended loading rate), medium (2.2 m 3 /m 2 /day; MFR), and low (1.1 m 3 /m 2 /day; LFR). Crop species varying in growth rate were examined for their optimal HLR: fast-growing Chinese cabbage (Brassica rapa) and lettuce (Lactuca sativa); medium-growing mustard (Brassica juncea) and chia (Salvia hispanica); and slow-growing basil (Ocimum basilicum) and Swiss chard (Beta vulgaris). Compared to LFR, HFR decreased water and leaf temperatures and total ammonium nitrogen (TAN) but increased dissolved oxygen and pH in aquaponic solution up to one and two weeks after transplant, respectively. HFR increased NO 3 -N concentration by 50 and 80%, respectively, compared to MFR and LFR, while reducing the exposure duration of roots to ammonia (NH 3 -N) and its peak concentration through rapid dissipation of the toxic compound. Lower electrical conductivity (EC) in HFR during the last two weeks of production was associated with higher plant nutrient uptake and greater biomass production. The leaf greenness, photosynthetic rate (Pn), and total plant N were significantly higher at HFR than LFR. Fish growth rate, fresh weight, and feed-conversion efficiency were also increased by HFR. The growth of fast-growing crops including total fresh weight, shoot fresh weight, leaf area, and Pn was not different between HFR and MFR, while HLR had less significant effects on the growth and performance (i.e., shoot fresh weight and whole plant photosynthesis) of slow-growing crops. In conclusion, the flow rate is an important component in aquaponic crop production as it affects spatial and temporal water characteristics and subsequently determines the growth and yield of the crops. HLR at 3.3 m 3 /m 2 /day was sufficient across the crops allowing better chemical and physical properties of the aquaponic solution for maximum yield and quality. HLR should be maintained at least at 2.2 m 3 /m 2 /day for the production of fast-growing crops but can be lowered for slow-growing crops.

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“…For the integration between fish and plants to be successful in aquaponics, it is necessary to choose the species carefully (Knaus and Palm 2017). Water parameters that are beneficial for fish growth must be similar to those required by plants (Diem et al 2017). Moreover, feeding management and physiology of aquatic organisms are common factors that affect nutrient availability to plants (Knaus and Palm 2017).…”

Section: Introductionmentioning

confidence: 99%

Integrated production of fish (pacu Piaractus mesopotamicus and red tilapia Oreochromis sp.) with two varieties of garnish (scallion and parsley) in aquaponics system

et al. 2017

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Aquaponics is emerging as an alternative for high-health food production. Being able to identify the technical viability of non-conventional plants and fish species would help to increase the interest and possibilities in aquaponic systems. The goal of the present study was to evaluate the aquaponics production of two garnish species: scallion (S) and parsley (P), using effluents of pacu and red tilapia culture. Two aquaponics devices were used, differing according to the fish species, generating two different effluents. Thus, for plant performance, four treatments were evaluated in a factorial design (plant species and fish effluent as main factors), as followed: Pacu-S, Tilapia-S, Pacu-P, and Tilapia-P, with three replicates each, for 35 days. Fish performance was evaluated using Student's t test. Each experimental device included a fish tank, filters, and six experimental units for the plants (floating rafts). Results

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Effects of recirculation rates on water quality and Oreochromis niloticus growth in aquaponic systems

Cited by 44 publications

References 22 publications

Coupled Aquaponics Systems

Coupled Aquaponics Systems

Effects of Hydraulic Loading Rate on Spatial and Temporal Water Quality Characteristics and Crop Growth and Yield in Aquaponic Systems

Integrated production of fish (pacu Piaractus mesopotamicus and red tilapia Oreochromis sp.) with two varieties of garnish (scallion and parsley) in aquaponics system

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