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Performance of the mixed LED light quality on the growth and energy efficiency of Arthrospira platensis
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Performance of the mixed LED light quality on the growth and energy efficiency of Arthrospira platensis
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Performance of the mixed LED light quality on the growth and energy efficiency of Arthrospira platensis
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Journal Article
Performance of the mixed LED light quality on the growth and energy efficiency of Arthrospira platensis
2018
Overview
The effect of mixed light quality with red, blue, and green LED lamps on the growth of Arthrospira platensis was studied, so as to lay the theoretical and technical basis for establishing a photo-bioreactor lighting system for application in space. Meanwhile, indexes, like morphology, growth rate, photosynthetic pigment compositions, energy efficiency, and main nutritional components, were measured respectively. The results showed that the blue light combined with red light could decrease the tightness of filament, and the effect of green light was opposite. The combination of blue light or green light with red light induced the filaments to get shorter in length. The 8R2B treatment could promote the growth of Arthrospira platensis significantly, and its dry weight reached 1.36 g L−1, which was 25.93% higher than the control. What’s more, 8R2B treatment had the highest contents of carbohydrate and lipid, while 8R2G was rich in protein. 8R0.5G1.5B had the highest efficiency of biomass production, which was 161.53 mg L−1 kW−1 h−1. Therefore, the combination of red and blue light is more conducive to the growth of Arthrospira platensis, and a higher biomass production and energy utilization efficiency can be achieved simultaneously under the mixed light quality with the ratio of 8R0.5G1.5B.
