Department of Chemical Engineering, Monash University, Wellington Rd, VIC 3800, Australia.
Department of Chemical Engineering, Monash University, Wellington Rd, VIC 3800, Australia.
Bioresour Technol. 2017 Apr;229:1-10. doi: 10.1016/j.biortech.2017.01.005. Epub 2017 Jan 7.
This two-part study firstly investigated Tetraselmis suecica grown in different CO (0.04-15%v/v) concentration through indoor and outdoor cultivation systems. A high CO concentration led to a high lipid content, and low nitrogen and oxygen content, which are desirable for transport fuel production. Pyrolysis characteristics were investigated by TG-IR and synchrotron IR microscopy. The results show Tetraselmis suecica grown in 10%CO had the highest decomposition rate corresponding to more volatile products produced during the main thermal cracking stage and derived from protein-and lipid-corresponding functional groups. Moreover, a high reaction temperature and CO concentration resulted in a low retention of surface functional groups. The nitrogen functional groups initially decomposed at a temperature range of 250-300°C and still remained at 550°C, while the lipid-corresponding functional groups completely disappeared at a temperature range of 400-500°C. Besides, the decomposition of chemical components followed the order of carbohydrate, protein and lipid.
本研究分两部分进行，首先通过室内和室外培养系统研究了在不同 CO（0.04-15%v/v）浓度下生长的新月菱形藻。高 CO 浓度导致高脂质含量、低氮和氧含量，这有利于运输燃料的生产。通过 TG-IR 和同步辐射红外显微镜研究了热解特性。结果表明，在 10%CO 下生长的新月菱形藻具有最高的分解速率，对应于主热裂解阶段产生的更多挥发性产物，这些产物来自蛋白质和脂质相应的功能基团。此外，高反应温度和 CO 浓度导致表面功能基团的保留率较低。氮功能基团最初在 250-300°C 的温度范围内分解，在 550°C 时仍有残留，而脂质相应的功能基团在 400-500°C 的温度范围内完全消失。此外，化学组分的分解顺序为碳水化合物、蛋白质和脂质。
