Production of selenium-enriched microalgae as potential feed supplement in high-rate algae ponds treating domestic wastewater
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10.1016/j.biortech.2021.125239
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/353066
Tipus de documentArticle
Data publicació2021-08
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacional
Abstract
This study assessed the selenium (Se) removal efficiency of two pilot-scale high-rate algae ponds (HRAPs) treating domestic wastewater and investigated the production of Se-enriched microalgae as potential feed supplement. The HRAP-Se had an average Se, NH4+-N, total phosphorus and COD removal efficiency of, respectively, 43%, 93%, 77%, and 70%. Inorganic Se taken up by the microalgae was mainly (91%) transformed to selenoamino acids, and 49–63% of Se in the Se-enriched microalgae was bioaccessible for animals. The crude protein content (48%) of the microalgae was higher than that of soybeans, whereas the essential amino acid content was comparable. Selenium may induce the production of the polyunsaturated fatty acids omega-3 and omega-6 in microalgae. Overall, the production of Se-enriched microalgae in HRAPs may offer a promising alternative for upgrading low-value resources into high-value feed supplements, supporting the drive to a circular economy.
CitacióLi, J. [et al.]. Production of selenium-enriched microalgae as potential feed supplement in high-rate algae ponds treating domestic wastewater. "Bioresource technology", Agost 2021, vol. 333, p. 125239:1-125239:10.
ISSN0960-8524
Versió de l'editorhttps://www.sciencedirect.com/science/article/abs/pii/S0960852421005782
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Li_2021_BITE_postprint.pdf.pdf | 1,280Mb | Visualitza/Obre |