State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
Bioresour Technol. 2018 Aug;261:76-85. doi: 10.1016/j.biortech.2018.04.017. Epub 2018 Apr 7.
The helix pitch and trichome length of Spirulina sp. were promoted to improve the biomass harvesting efficiency and CO fixation rate in 660 m raceway ponds aerated with food-grade CO purified from a coal chemical flue gas. The CO fixation rate was improved with increased trichome length of the Spirulina sp. in a raceway pond with double paddlewheels, baffles, and CO aerators (DBA raceway pond). The trichome length has increased by 33.3 μm, and CO fixation rate has increased by 42.3% and peaked to 51.3 g/m/d in a DBA raceway pond. Biomass harvesting efficiency was increased with increased helix pitch. When the day-average greenhouse temperature was 33 °C and day-average sunlight intensity was 72,100 lu×, the helix pitch of Spirulina sp. was increased to 56.2 μm. Hence the biomass harvesting efficiency was maximized to 75.6% and biomass actual yield was increased to 35.9 kg in a DBA raceway pond.
在 660m 跑道式池塘中，通过添加从煤化工烟道气中纯化的食品级 CO 来增加螺旋藻的螺旋间距和毛状体长度，以提高生物量收获效率和 CO 固定率。在带有双桨叶、挡板和 CO 曝气器的跑道式池塘（DBA 跑道式池塘）中，毛状体长度的增加提高了 CO 固定率。毛状体长度增加了 33.3μm，CO 固定率增加了 42.3%，达到 51.3g/m/d。通过增加螺旋间距可以提高生物量收获效率。当温室日平均温度为 33°C，日平均光照强度为 72,100lu×时，将螺旋藻的螺旋间距增加到 56.2μm。因此，在 DBA 跑道式池塘中，生物量收获效率最大提高到 75.6%，生物量实际产量增加到 35.9kg。
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