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Study of Audible Sound Effect on Algae Growth

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  131611458,  2013 Kansas City, Missouri, July 21 - July 24, 2013. (doi: @2013
Authors:   Weiming Cai, Ning Wang, Nurhan Turgut Dunford, Songming Zhu, Huinong He
Keywords:   Sound stimulation algae growth rate sound frequency biomass

Abstract. Previous research indicates that audible sound stimulation can promote microalgae growth. The improvement in growth rate depends on the frequency of the sound waves and the microalgae strain used. This study examined the effect of sound waves with frequency of 1100Hz, 2200Hz, and 3300Hz to stimulate the productivity of an Oklahoma native strain, Picochlorum Oklahomensis. The effect of the frequency of sound on biomass was examined. A sound-aid algae growth experimental system was developed. Various audible sound signals were generated at different frequencies and applied to algae samples. The optimal frequency of the sound wave was selected and tested using the developed sound-aid algae growth system.

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