Speaker
Description
The present study evaluated the suitability of recirculating aquaculture system (RAS) process water from African catfish (Clarias gariepinus) for cultivating Lemna minor (9440) in a greenhouse system. An indoor vertical farming (IVF) system for decoupled aquaponics was developed and implemented.
Cultivation in process water had no significant effect on frond area or frond weight, while root length increased significantly. Nutrient and amino acid composition remained within ranges reported in the literature, with protein contents exceeding 32% in all treatments. Biomass productivity reached 3.0 g DW/m²/d in the control and 2.6 g DW/m²/d in both process water treatments.
These results indicate that RAS process water is a suitable cultivation medium for L. minor (9440) without compromising biomass quality.
Keywords
aquaponics, IVF, RAS, Lemna, catfish
References
Petersen, F., Demann, J., von Salzen, J., Olfs, H.‐W., Westendarp, H., Wolf, P., Appenroth, K.‐J, & Ulbrich, A. (2022a). Re-circulating indoor vertical farm: Technicalities of an automated duckweed biomass production system and protein feed product quality evaluation. Journal of Cleaner Production, 380. https://doi.org/10.1016/j.jclepro.2022.134894
Palm, H. W, Seidemann, R., Wehofsky, S., & Knaus, U (2014a). Significant factors affecting the economic sustainability of closed aquaponic systems. Part I: System design, chemo-physical parameters and general aspects. Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society, 7(1), 20–32.
Molnár, P., Bereczki, C., Bényi, B. C., Bársony, P., & Fehér, M. (2025). The use of Common duckweed (Lemna minor) as a biological filter in the rearing of hybrid African catfish (Clarias gariepinus x Heterobranchus longifilis). Acta Agraria Debreceniensis(1), 107–112. https://doi.org/10.34101/actaagrar/1/15457
| Corresponding author email | alexej.sonnenfeld@uni-rostock.de |
|---|---|
| Scientific Session | Applications |
