期刊
BIORESOURCE TECHNOLOGY
卷 393, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2023.130083
关键词
Emerging compounds; Algal consortium; Sunlight; Biodiversity; Phototrophic organism
Single microalgae species are effective at removing various organic micropollutants, but increased species diversity may enhance this removal. In this study, a mixed microbial community showed higher removal capacity than Chlorella sorokiniana at a specific stage, but removal efficiency decreased due to overgrowth of filamentous green algae.
Single microalgae species are effective at the removal of various organic micropollutants (OMPs), however increased species diversity might enhance this removal. Sixteen OMPs were added to 2 continuous photobioreactors, one inoculated with Chlorella sorokiniana and the other with a microalgal-bacterial community, for 112 d under natural light. Three media were sequentially used in 3 Periods: I) synthetic sewage (d 0-28), II) 10x diluted anaerobically digested black water (AnBW) (d 28-94) and III) 5x diluted AnBW (d 94-112). Twelve OMPs were removed > 30 %, while 4 were < 10 % removed. Removal efficiencies were similar for 9 OMPs, yet the mixed community showed a 2-3 times higher removal capacity (mu g OMP/g dry weight) than C. sorokiniana during Period II pseudo steady state. The removal decreased drastically in Period III due to overgrowth of filamentous green algae. This study shows for the first time how microbial community composition and abundance are key for OMPs removal.
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