| Title |
Production of selenium-enriched microalgae as potential feed supplement in high-rate algae ponds treating domestic wastewater |
| ID_Doc |
29075 |
| Authors |
Li, J; Otero-Gonzalez, L; Michiels, J; Lens, PNL; Du Laing, G; Ferrer, I |
| Title |
Production of selenium-enriched microalgae as potential feed supplement in high-rate algae ponds treating domestic wastewater |
| Year |
2021 |
| Published |
|
| DOI |
10.1016/j.biortech.2021.125239 |
| 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. |
| Author Keywords |
Selenium; Algae; HRAPs; Photobioreactor; Resource recovery; Wastewater treatment |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000655706000001 |
| WoS Category |
Agricultural Engineering; Biotechnology & Applied Microbiology; Energy & Fuels |
| Research Area |
Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels |
| PDF |
https://upcommons.upc.edu/bitstream/2117/353066/1/Li_2021_BITE_postprint.pdf.pdf
|