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Open AccessArticle

Agronomic and Environmental Performance of Lemnaminor Cultivated on Agricultural Wastewater Streams—A Practical Approach

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Provincial Research and Advice Centre for Agriculture and Horticulture (Inagro vzw), Ieperseweg 87, 8800 Roeselare-Beitem, Belgium
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Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
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Departamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja (UTPL), Loja 1101608, Ecuador
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Department of Food Technology, Safety and Health, Ghent University, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium
*
Author to whom correspondence should be addressed.
Academic Editor: Giorgio Provolo
Sustainability 2021, 13(3), 1570; https://doi.org/10.3390/su13031570
Received: 23 December 2020 / Revised: 21 January 2021 / Accepted: 25 January 2021 / Published: 2 February 2021
This study investigated the potential of Lemna minor to valorise agricultural wastewater in protein-rich feed material in order to meet the growing demand for animal feed protein and reduce the excess of nutrients in certain European regions. For this purpose, three pilot-scale systems were monitored for 175 days under outdoor conditions in Flanders. The systems were fed with the effluent of aquaculture (pikeperch production—PP), a mixture of diluted pig manure wastewater (PM), and a synthetic medium (SM). PM showed the highest productivity (6.1 ± 2.5 g DW m−2 d−1) and N uptake (327 ± 107 mg N m−2 d−1). PP yielded a similar productivity and both wastewaters resulted in higher productivities than SM. Furthermore, all media showed similar P uptake rates (65–70 P m−2 d−1). Finally, duckweed had a beneficial amino acid composition for humans (essential amino acid index = 1.1), broilers and pigs. This study also showed that the growing medium had more influence on the productivity of duckweed than on its amino acid composition or protein content, with the latter being only slightly affected by the different media studied. Overall, these results demonstrate that duckweed can effectively remove nutrients from agriculture wastewaters while producing quality protein. View Full-Text
Keywords: biological effluent treatment; nutrient recycling; Lemnaceae; constructed wetlands; protein alternatives; amino acid composition biological effluent treatment; nutrient recycling; Lemnaceae; constructed wetlands; protein alternatives; amino acid composition
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MDPI and ACS Style

Devlamynck, R.; de Souza, M.F.; Michels, E.; Sigurnjak, I.; Donoso, N.; Coudron, C.; Leenknegt, J.; Vermeir, P.; Eeckhout, M.; Meers, E. Agronomic and Environmental Performance of Lemnaminor Cultivated on Agricultural Wastewater Streams—A Practical Approach. Sustainability 2021, 13, 1570. https://doi.org/10.3390/su13031570

AMA Style

Devlamynck R, de Souza MF, Michels E, Sigurnjak I, Donoso N, Coudron C, Leenknegt J, Vermeir P, Eeckhout M, Meers E. Agronomic and Environmental Performance of Lemnaminor Cultivated on Agricultural Wastewater Streams—A Practical Approach. Sustainability. 2021; 13(3):1570. https://doi.org/10.3390/su13031570

Chicago/Turabian Style

Devlamynck, Reindert; de Souza, Marcella F.; Michels, Evi; Sigurnjak, Ivona; Donoso, Natalia; Coudron, Carl; Leenknegt, Jan; Vermeir, Pieter; Eeckhout, Mia; Meers, Erik. 2021. "Agronomic and Environmental Performance of Lemnaminor Cultivated on Agricultural Wastewater Streams—A Practical Approach" Sustainability 13, no. 3: 1570. https://doi.org/10.3390/su13031570

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