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Title

Three-Dimensional Simulation of Ultrasound-Induced Microalgal Cell Disruption.

Authors

Wang, M.; Yuan, W.; Hale, Andy

Abstract

The three-dimensional distribution ( x, y, and z) of ultrasound-induced microalgal cell disruption in a sonochemical reactor was predicted by solving the Helmholtz equation using a three-dimensional acoustic module in the COMSOL Multiphysics software. The simulated local ultrasound pressure at any given location ( x, y, and z) was found to correlate with cell disruption of a freshwater alga, Scenedesmus dimorphus, represented by the change of algal cell particle/debris concentration, chlorophyll-a fluorescence density (CAFD), and Nile red stained lipid fluorescence density (LFD), which was also validated by the model reaction of potassium iodide oxidation (the Weissler reaction). Furthermore, the effect of ultrasound power intensity and processing duration on algal cell disruption was examined to address the limitation of the model.

Subjects

MICROALGAE; ULTRASONIC imaging; CYTOLOGICAL research; CAVITATION; SONOCHEMICAL degradation

Publication

Applied Biochemistry & Biotechnology, 2016, Vol 178, Issue 6, p1184

ISSN

0273-2289

Publication type

Academic Journal

DOI

10.1007/s12010-015-1937-z

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