Li J.,Shanghai JiaoTong University |
Li J.,Shanghai Environment and Energy Exchange Co. |
Bin H.,Shanghai Environment and Energy Exchange Co. |
Lin J.,Shanghai Environment and Energy Exchange Co. |
And 3 more authors.
Bioresource Technology | Year: 2016
Effects of white light-emitting diodes (LEDs) with different light intensities at photoperiod of 18:6h on Chlorella pyrenoidosa growth were investigated. The microalgae exhibited the highest growth rate 89.0mgL-1d-1 and growth efficiency 97.8mgL-1KWh-1 at 110 and 90μmolm-2s-1, respectively. Based on the discovery of this asynchronous phenomenon between growth rate and growth efficiency, influences of LEDs (red, blue and white) under capped daily energy consumption (0.80KWh d-1) with combinations of electric power (33.3, 44.4 and 66.6w) and photoperiod (24:0, 18:6 and 12:12h) were further investigated. The highest growth efficiency 106.4mgL-1KWh-1 and growth rate 85.1mgL-1d-1 were both obtained under white-33.3w-24h. Growth efficiency and growth rate were simultaneously improved 1.1 times through this method above. The order of growth efficiency under different LEDs were white