Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea.
Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea.
Bioresour Technol. 2015 Jun;186:246-251. doi: 10.1016/j.biortech.2015.03.045. Epub 2015 Mar 13.
Simultaneous treatment (combining with cell disruption and lipid extraction) using hydrodynamic cavitation (HC) was applied to Nannochloropsis salina to demonstrate a simple and integrated way to produce oil from wet microalgae. A high lipid yield from the HC (25.9-99.0%) was observed compared with autoclave (16.2-66.5%) and ultrasonication (5.4-26.9%) in terms of the specific energy input (500-10,000 kJ/kg). The optimal conditions for the simultaneous treatment were established using a statistical approach. The efficiency of the simultaneous method was also demonstrated by comparing each separate treatment. The maximum lipid yield (predicted: 45.9% and experimental: 45.5%) was obtained using 0.89% sulfuric acid with a cavitation number of 1.17 for a reaction time of 25.05 min via response surface methodology. Considering its comparable extractability, energy-efficiency, and potential for scale-up, HC may be a promising method to achieve industrial-scale microalgae operation.
采用水力空化（HC）同时进行处理（结合细胞破碎和脂质提取），应用于小球藻（Nannochloropsis salina），展示了一种从湿微藻中生产油脂的简单而综合的方法。与高压釜（16.2-66.5%）和超声处理（5.4-26.9%）相比，就特定能量输入（500-10000 kJ/kg）而言，HC 的油脂得率较高（25.9-99.0%）。通过统计方法确定了同时处理的最佳条件，并通过比较每种单独的处理方法证明了同时处理方法的效率。通过响应面法，使用 0.89%硫酸和空化数为 1.17，反应时间为 25.05 分钟，获得了最大油脂产率（预测值：45.9%，实验值：45.5%）。考虑到其可比拟的提取效率、能量效率和扩大规模的潜力，HC 可能是实现工业规模微藻操作的一种有前途的方法。
