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Simulation and exploration of cavitation process during microalgae oil extracting with ultrasonic-assisted for hydrogen production
International Journal of Hydrogen Energy ( IF 7.2 ) Pub Date : 2020-06-30 , DOI: 10.1016/j.ijhydene.2020.06.045
Xiaohong Hao , Hang Suo , Hui Peng , Peixing Xu , Xin Gao , Su Du

Microalgae is promising to be used as feedstock resources for hydrogen production due to its high oil and grease contents. This promotes the development of extraction technology of microalgae oil. In this study, based on the Rayleigh-Plesset equation, the effects of temperature, pressure, ultrasonic power and frequency on the bubble motion of ethanol ultrasound cavitation are investigated. Subsequently, the effects of different process parameters on the extraction rate are studied using Schizochytrium sp. as raw material by stirring or ultrasonic-assisted extraction. And the composition of algae extraction oil is analyzed. The results show that the amplitude of cavitation bubbles increases with the increase of ultrasonic power and decrease of ultrasonic frequency. The extraction rate of algae oil reaches 93.76 ± 0.48% when the ultrasonic power is 150 W, the reaction time is 30 min, the temperature is 50 °C and the liquid-solid ratio is 10:1.



中文翻译:

超声辅助制氢微藻油萃取过程中空化过程的模拟与探索

微藻由于其油脂含量高,有望用作制氢的原料。这促进了微藻油提取技术的发展。本研究基于Rayleigh-Plesset方程,研究了温度,压力,超声功率和频率对乙醇超声空化气泡运动的影响。随后,使用裂殖壶菌属菌种研究了不同工艺参数对提取率的影响。。通过搅拌或超声辅助提取为原料。并分析了藻类提取油的组成。结果表明,空化气泡的振幅随着超声功率的增加和超声频率的降低而增加。当超声功率为150 W,反应时间为30 min,温度为50°C,液固比为10:1时,藻油的提取率达到93.76±0.48%。

更新日期:2020-06-30
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