Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-3672
Title: Navigating towards decoupled aquaponic systems : a system dynamics design approach
Authors : Goddek, Simon
Espinal, Carlos A.
Delaide, Boris
Jijakli, Haissam M.
Schmautz, Zala
Wuertz, Sven
Keesman, Karel J.
Published in : Water
Volume(Issue) : 8
Issue : 7
Publisher / Ed. Institution : MPDI
Issue Date: 2016
Language : Englisch / English
Subject (DDC) : 630: Landwirtschaft
Abstract: The classical working principle of aquaponics is to provide nutrient-rich aquacultural water to a hydroponic plant culture unit, which in turn depurates the water that is returned to the aquaculture tanks. A known drawback is that a compromise away from optimal growing conditions for plants and fish must be achieved to produce both crops and fish in the same environmental conditions. The objective of this study was to develop a theoretical concept of a decoupled aquaponic system (DAPS), and predict water, nutrient (N and P), fish, sludge, and plant levels. This has been approached by developing a dynamic aquaponic system model, using inputs from data found in literature covering the fields of aquaculture, hydroponics, and sludge treatment. The outputs from the model showed the dependency of aquacultural water quality on the hydroponic evapotranspiration rate. This result can be explained by the fact that DAPS is based on one-way flows. These one-way flows results in accumulations of remineralized nutrients in the hydroponic component ensuring optimal conditions for the plants. The study also suggests to size the cultivation area based on P availability in the hydroponic component as P is an exhaustible resource and has been identified one of the main limiting factors for plant growth.
Departement: Life Sciences und Facility Management
Organisational Unit: Institut für Umwelt und Natürliche Ressourcen (IUNR)
Publication type: Beitrag in wissenschaftlicher Zeitschrift / Article in scientific Journal
Type of review: Peer review (Publikation)
DOI : 10.3390/w8070303
10.21256/zhaw-3672
ISSN: 2073-4441
URI: https://digitalcollection.zhaw.ch/handle/11475/5953
License (according to publishing contract) : CC BY 4.0: Namensnennung 4.0 International
Appears in Collections:Publikationen Life Sciences und Facility Management

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