Aquaponic Systems: Nutrient recycling from fish wastewater by vegetable production

Role of stocking density of tilapia (Oreochromis aureus) on fish growth, water quality and tomato (Solanum lycopersicum) plant biomass in the aquaponic system

“…In this study, water potassium showed low levels. This was also reported by Graber and Junge [19] to explain a poor vegetable quality in aquaponics. In the present study, total plant biomass was low when compared with the previous studies on tomato plant in the aquaponics [20,21].…”

Hydroponic systems and water management in aquaponics: a review

“…Hu et al (2015) measured a daily water loss of 0.7%, and 2.2% with pak choi, and tomato, respectively. The differences in the values for the tomato culture can be probably attributed to the higher hydroponic surface/fish tank volume ratio used by Graber and Junge (2009). No correlation was found between the hydroponic unit surface/fish tank volume ratio and the water loss across the different studies (Table 2, Figure 5).…”

“…Daily water loss in AP systems is caused by fish sludge removal, evaporation, plant evapotranspiration, and fish splashing during feeding. These losses range from 0.05 % (Goda et al, 2015) to 5% (Endut et al, 2014(Endut et al, , 2016 of total water, although higher values (9%-41%) have been found in particular conditions (Graber and Junge, 2009) (Table 2). The daily water loss is influenced among others (temperature, biofilter construction, greenhouse conditions) by the hydroponic surface/fish tank volume ratio.…”

“…In these integrated systems, nutrients that are excreted by the fish or generated by microbial activity (Munguia-Fragozo et al, 2015;Zou et al, 2016a) are absorbed by hydroponically cultured plants, thus treating the water before it is recycled to the fish tank (Endut et al, 2009;Tyson et al, 2011;Nichols and Savidov, 2012;Medina et al, 2016;Nuwansi et al, 2016). AP has received considerable attention due to its capability to sustain water quality, minimise fresh water consumption, and provide a marketable vegetable crop (McMurtry et al, 1997a(McMurtry et al, , 1997bAdler et al, 2000a;Lennard and Leonard, 2005;Graber and Junge, 2009;Danaher et al, 2011Danaher et al, , 2013Pantanella et al, 2011Pantanella et al, , 2015Espinosa Moya et al, 2016;Shete et al, 2016). Nevertheless few microbial studies have been conducted to determine food safety status (Elumalai et al, 2017) suggesting that further research is needed to evaluate this aspect.…”

Aquaponics Software in Greece

“…In addition, carbohydrate addition to aquaculture systems stimulates heterotrophic bacteria growth that results in the removal of inorganic nitrogen through assimilation. Thus, all fish waste and feed nutrients can be utilized and recycled (Graber and Junge-Berberovic, 2009). The need for technological advancements is also addressed (König et al, 2016).…”