提高 1191 平方米（2）跑道式池塘中微藻的增长率，以固定燃煤电厂烟道气中的 CO2。
Improving growth rate of microalgae in a 1191m(2) raceway pond to fix CO2 from flue gas in a coal-fired power plant.
机构信息
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
出版信息
Bioresour Technol. 2015 Aug;190:235-41. doi: 10.1016/j.biortech.2015.04.085. Epub 2015 Apr 29.
CO2 fixation between microalgal biomass and culture solution and the weight ratio of biomass consumption at nighttime to biomass growth at daytime were compared in an open raceway pond aerated with flue gas from a coal-fired power plant. Average daytime sunlight intensity and solution temperature were optimized to improve microalgal growth rate and to enhance the efficiency of CO2 fixation. When the average daytime solution temperature increased from 12 to 26°C, the rate of biomass consumption due to microalgal respiration at nighttime increased from 6.0 to 7.9g/m(2)/d, which was approximately 25% of the biomass growth rate at daytime. Furthermore, when the average daytime sunlight intensity increased from 39,900 to 88,300lux, CO2 fixation rate in the microalgal biomass increased from 18.4 to 40.7g/m(2)/d, which was approximately 1/3 of CO2 removal rate from flue gas by the microalgal culture system.
在利用燃煤电厂烟道气充气的开放式跑道池塘中，比较了微藻生物质与培养液之间的 CO2 固定以及夜间生物质消耗与白天生物质生长的重量比。优化了平均白天光照强度和溶液温度，以提高微藻的生长速度并提高 CO2 固定效率。当平均白天溶液温度从 12°C 升高到 26°C 时，夜间微藻呼吸导致的生物质消耗率从 6.0g/m(2)/d 增加到 7.9g/m(2)/d，约占白天生物质生长速率的 25%。此外，当平均白天光照强度从 39,900lux 增加到 88,300lux 时，微藻生物质中的 CO2 固定率从 18.4g/m(2)/d 增加到 40.7g/m(2)/d，这约为微藻培养系统从烟道气中去除 CO2 速率的 1/3。
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