Physiological consequences of chronic exposure of rainbow trout (Oncorhynchus mykiss) to suspended solid load in recirculating aquaculture systems

Becke, Cornelius; Schumann, Mark; Steinhagen, Dieter; Geist, Juergen; Brinker, Alexander

doi:10.1016/j.aquaculture.2017.11.030

Cited by 31 publications

(31 citation statements)

References 67 publications

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“…Accumulating particles, and especially fine particles, are considered detrimental to fish health, welfare and performance (Bilotta and Brazier, 2008; A C C E P T E D M A N U S C R I P T 4 Chapman et al, 1987;Chen et al, 1993;Chen and Malone, 1991;Herbert and Merkens, 1961). However, this assertion has been questioned for rainbow trout by recent investigations (Becke et al, 2017(Becke et al, , 2018. Nevertheless, intensification of aquacultural production resulting in an increase in suspended solid concentration, will also lead to an increase in dissolved wastes, such as unionized ammonia (NH 3 ) (Ip et al, 2001).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The experiment used two replicate RASs, each with 10 tanks (capacity of 330 L, total RAS volume 6m 3 ) ( Figure 1), as described by Becke et al (2018). The study used all-female rainbow trout (Oncorhynchus mykiss, Störk strain) to exclude sex-related effects.…”

Section: Husbandrymentioning

confidence: 99%

“…They were held at maximum stocking densities of 67.8 ± 3.0 kg m −3 (control) and 68.3 ± 2.6 kg m −3 (treatment). The control RAS was operated under regular conditions, while the particle load of the treatment RAS was artificially elevated as described in Becke et al (2018). Briefly, a mud pump (Wilo-EMU KS 8 ES, Dortmund, Germany) was used to pump the backwash water of the drum filter back into the system.…”

Section: Husbandrymentioning

confidence: 99%

“…Association (APHA, 1998), with the exception that 0.45 µm cellulose-acetate filters (diameter: 50mm, 11106-50-N, Sartorius AG, Göttingen, Germany) were used instead of glass-fiber filters due to the smaller and better defined pore sizes. Filters were prepared as described by Becke et al (2018). Water samples were collected using a tube at a water depth of ca.…”

Section: Water Parametersmentioning

confidence: 99%

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Effects of unionized ammonia and suspended solids on rainbow trout (Oncorhynchus mykiss) in recirculating aquaculture systems

Becke¹,

Schumann²,

Steinhagen³

et al. 2019

Aquaculture

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Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Husbandrymentioning

confidence: 99%

Section: Husbandrymentioning

confidence: 99%

Section: Water Parametersmentioning

confidence: 99%

See 2 more Smart Citations

Effects of unionized ammonia and suspended solids on rainbow trout (Oncorhynchus mykiss) in recirculating aquaculture systems

Becke¹,

Schumann²,

Steinhagen³

et al. 2019

Aquaculture

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“…The authors subsequently investigated the effects of chronic exposure to elevated levels of suspended solids on rainbow trout physiology, and the same results were observed (Becke et al . ); thus, the authors thought that suspended solids are not key issues affecting RAS fish welfare, but interaction effects, such as interactions with ammonia were not excluded.…”

Section: Perniciousness Of Solidsmentioning

confidence: 99%

Generation, characterization, perniciousness, removal and reutilization of solids in aquaculture water: a review from the whole process perspective

Bao

Zhu

Jin

et al. 2018

Reviews in Aquaculture

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The generation of solids by aquaculture activities has led to many problems in animal welfare, environmental quality, water treatment effects and public health, such as gill and intestinal damage, water eutrophication, system components blockages and antibiotics transfers through the food chain to human; thus, effective solid wastes management is very important. The purpose of this review is to summarize the sources, characterization methods, harmfulness, removal technologies and reutilization of solids in aquaculture water, including (i) different sources of solids, such as uneaten feed, feces and debris; (ii) solids characterization based on the general parameters, particle size distribution and chemical composition; (iii) the toxicity and detriment of solids to cultured species, the environment, aquaculture system components and human health; (iv) Solids removal, effluents solids thickening and source control techniques for better solids management; and (v) various methods for the reutilization of aquacultural solid wastes for resource value-adding. In addition to these five specific objectives, the merits and drawbacks of each method or technology and future research priorities are discussed. The present review provides an understanding of the role played by solids in aquaculture water and provides guidance for aquacultural solid wastes precision management, aquaculture practices and technological developments. Thus, solids management can be carried out based on this guidance to improve animal welfare and the stability of water treatment systems, reduce harm to the environment and public health, and enable the development of aquaculture in a sustainable way.

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Performance investigation of a novel design of vertical micro-screen drum filter for a recirculating aquaculture system (RAS)

2023

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The present study proposes a new design of mechanical filter to suit the recirculating aquaculture system (RAS) as a high-efficiency alternative filter to the conventional swirl separator (CSS). The new filter is considered the developed version of CSS; thus, it is called thereafter as the swirl-vertical drum filter (SVDF) which is provided with a rotating vertical micro-screen drum equipped with a fixed vertical brush as a self-cleaning tool instead of the conventional backwash system. The performance of SVDF was evaluated under different drum rotational speeds, and drum rotation times using sinking and floating fish feed pellets and magnetic field device, and then, it was compared to CSS in terms of water quality and filtration efficiency under the same operational conditions. Experimental results showed better values of water quality including Dissolved oxygen (DO), pH and unionized ammonia (NH3). Also, the lowest value of COD was found to be 18.33 mg/L by using SVDF with floating feed pellets, whilst the highest value of 100.73 mg/L was found in the case of using the CSS with sinking pellets. Meanwhile, the magnetic field device had no effect on the filtration process. The lowest surface area of the vertical micro-screen drum of 0.217 ± 0.013 m2 was obtained at the drum’s rotational speed of 20 rpm (0.39 m/s), rotation time of 150 min with floating feed pellets. Experimentally, it is found that the new SVDF has higher filtration efficiency than the CSS by about 57.57% under the same operational conditions.

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Physiological consequences of chronic exposure of rainbow trout (Oncorhynchus mykiss) to suspended solid load in recirculating aquaculture systems

Cited by 31 publications

References 67 publications

Effects of unionized ammonia and suspended solids on rainbow trout (Oncorhynchus mykiss) in recirculating aquaculture systems

Effects of unionized ammonia and suspended solids on rainbow trout (Oncorhynchus mykiss) in recirculating aquaculture systems

Generation, characterization, perniciousness, removal and reutilization of solids in aquaculture water: a review from the whole process perspective

Performance investigation of a novel design of vertical micro-screen drum filter for a recirculating aquaculture system (RAS)

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