期刊
BIORESOURCE TECHNOLOGY
卷 312, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.123563
关键词
Chlorella vulgaris; Strigolactone; Photosynthetic characteristic; Pollutant removal; CO2 removal
资金
- Fundamental Research Funds for the Central Universities [2019B18314]
- National Natural Science Foundation of China [31971514, 31670511]
- Zhejiang Provincial Natural Science Foundation [LY16C030003, LQ17E080013]
Freshwater microalgae Chlorella vulgaris was cultured and induced with strigolactone (GR24) to simultaneously eliminate nutrients in biogas slurry and purify biogas. Treatment with 10(-7) M GR24 yielded maximum growth rate and mean daily productivity for algae at 0.187 +/- 0.06 d(-1) and 0.097 +/- 0.008 g L-1 d(-1), respectively. Results from chlorophyll fluorescence transients method demonstrated that moderate concentration of GR24 could enhance the photosynthetic performance of microalgae. In addition, GR24 affected intracellular carbonic anhydrase activity and chlorophyll-a content. Maximum chemical oxygen demand, total nitrogen, and CO2 removal efficiencies were 78.62 +/- 2.36%, 76.47 +/- 1.53% and 64.05 +/- 1.15% with 10(-7) M GR24 induction, respectively. Further, highest total phosphorus removal efficiency (80.27 +/- 1.93%) was observed at 10(-9) M. The optimal GR24 concentration range was determined to be between 10(-9) and 10(-7) M in consideration with nutrient and CO2 removal efficiencies.
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