Possibility of renewable energy production and CO2 mitigation by thermochemical liquefaction of microalgae
Possibility of renewable energy production and CO2 mitigation by thermochemical liquefaction of microalgae
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DOI：
10.1016/s0961-9534(99)00019-7
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发表时间：
1999-07
影响因子：
6
通讯作者：
S. Sawayama;T. Minowa;S. Yokoyama
中科院分区：
文献类型：
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作者：
S. Sawayama;T. Minowa;S. Yokoyama
研究了微藻热化学液化生产液体燃料过程的能量平衡和CO2减排效果。与直接燃烧、气化和热解相比，热化学液化具有处理湿材料的优点，因为它不需要干燥过程。布朗葡萄球菌产液体燃料的产率和低热值均高于杜氏盐藻，因此，培养和分离B. braunii比D.第三分支。B. braunii也小于D.第三分支。基于这些差异，采用B. braunii被认为是净可再生能源的生产者，而D.第三分支。如果一个使用煤的100兆瓦热电厂将被从B生产的液体燃料所取代。braunii的CO2减排量为1.5× 105 t·a-1，需要8.4× 103 ha的微藻养殖面积。
The energy balance and CO2mitigating effect of a liquid fuel production process from microalgae using thermochemical liquefaction were studied. Thermochemical liquefaction has the advantage of treating wet materials compared with direct combustion, gasification and pyrolysis, because it does not require a drying process. The yield of liquid fuel produced from Botryococcus braunii and its lower heating value were high compared with those of Dunaliella tertiolecta; therefore, the energy inputs for cultivation and separation of B. braunii were calculated to be smaller than those of D. tertiolecta. The energy input for fertilizers of B. braunii was also smaller than that of D. tertiolecta. Based on these differences, the liquefaction process using B. braunii was suggested to produce net renewable energy, but not that with D. tertiolecta. If a 100 MW thermal plant using coal would be replaced by liquid fuel produced from B. braunii, the quantity of CO2mitigation could be 1.5×105t year−1and 8.4×103ha of microalgal cultivation area could be necessary.