Plant and fish production performance, nutrient mass balances, energy and water use of the PAFF Box, a small-scale aquaponic system

Highlights • With only fish feed, tap water and iron sulfate as inputs, sustained lettuce and basil growth was achieved and no nutrient deficiency or diseases were observed. • With a daily feed input of 42 g per m2 of DWC beds, nitrate, calcium, boron and sodium accumulated quickly and only water ex...

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Bibliographic Details
Published in:European journal of radiology 2017
Main Authors: Delaide, Boris, Delhaye, Guillaume, Dermience, Michael, Gott, James, Soyeurt, Hélène, Jijakli, M.Haissam
Format: Article
Language:English
Subjects:
Radiology
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Summary:Highlights • With only fish feed, tap water and iron sulfate as inputs, sustained lettuce and basil growth was achieved and no nutrient deficiency or diseases were observed. • With a daily feed input of 42 g per m2 of DWC beds, nitrate, calcium, boron and sodium accumulated quickly and only water exchange could control their accumulation. • Key macronutrients (potassium, phosphorus) and micronutrients (iron, copper, zinc, manganese and molybdenum), remained low in solution with concentrations below 10 mg/L and 10 μg/L, respectively. • Even a low daily water exchange rate of 3.6% implicated a high nutrient loss in the environment. • The production of 1 kg of vegetable consumed 244 L of water and 84.5 kWh of electricity and 1 kg increase of tilapia consumed 278 L and 96.2 kWh.
ISSN:0720-048X
DOI:10.1016/j.ejrad.2017.05.043