Page 117 - 《应用声学》2021年第1期

第 40 卷 第 1 期 Vol. 40, No. 1
2021 年 1 月 Journal of Applied Acoustics January, 2021

⋄ 研究报告 ⋄

超声辅助提取微藻油脂机理及工艺参数的研究 ∗

张仕双 李彬彬 傅 波 †

(四川大学机械工程学院 成都 610065)

摘要：对微藻细胞壁进行破碎是提高微藻油脂提取率的重要手段，超声振动破碎是一种有效的细胞破碎方法。
建立基于声冲流、声辐射力、声空化的传质动力学的经验模型，运用传输矩阵法设计用于微藻细胞破碎的超声
振动子，搭建了实验平台，并设置不同超声振动工艺参数对微藻细胞的破碎率进行了实验研究。结果表明：超
声振动子，在工具头浸入微藻二分之一总溶液深度、工作时间 30 min、功率 225 W、纵振频率 25 kHz 的条件下，
超声振动破碎的效果最佳，采用氯仿试剂对破碎液进行油脂提取，效果最好。
关键词：微藻；超声破碎机理；超声振动子；油脂提取
中图法分类号: O426.9 文献标识码: A 文章编号: 1000-310X(2021)01-0113-08
DOI: 10.11684/j.issn.1000-310X.2021.01.014

A study on mechanism and processing parameters of ultrasonic-assisted
extraction of microalgae oil

ZHANG Shishuang LI Binbin FU Bo

(School of Mechanical Engineering, Sichuan University, Chengdu 610065, China)
Abstract: Breaking up the cell wall of microalgae is an important means to increase the amount of oil extracted
from microalgae. Ultrasonic vibration breaking is an effective method of cell breaking. An empirical model of
mass transfer dynamic equation based on acoustic impulse flow, acoustic radiation force and acoustic cavitation
was established. The ultrasonic vibrator for microalgae cell breaking was designed by using transfer matrix
method. An experimental platform was established. The fragmentation rate of microalgae cells was studied by
setting different ultrasonic vibration parameters. Results show that the ultrasonic vibrator has the best effect
under the conditions of half of the total solution depth of microalgae immersed in the tool head, 30 minutes
working time, 225 W power and 25 kHz longitudinal vibration frequency. The oil extraction of the crushing
liquid with chloroform reagent is the best.
Keywords: Microalgae; Ultrasonic breaking mechanism; Ultrasonic vibrator; Oil extraction

2020-04-25 收稿; 2020-06-28 定稿
四川省科技计划项目 (2020YFG0117)
∗
作者简介: 张仕双 (1996– ), 男, 重庆人, 硕士研究生, 研究方向: 机械电子工程。
通信作者 E-mail: bofu@scu.edu.cn
†