The Sonochemistry Centre, Faculty of Health and Life Sciences, Coventry University, Coventry, United Kingdom.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2010;45(7):863-6. doi: 10.1080/10934521003709065.
Cyanobacteria are photosynthetic bacteria with some characteristics of algae. Some cyanobacteria produce toxins that have been shown to be hazardous to both animals and humans. Previous research has demonstrated power ultrasound can provide a suitable method to control algae blooms although the optimum ultrasonic parameter settings have not been determined to ensure an effective and energy efficient treatment. In this work the effect of ultrasound on suspensions of Microcystis aeruginosa has been investigated at the following frequencies 20, 40, 580, 864 and 1146 kHz. Results showed that the reduction in algal numbers is dependent on both frequency and intensity. In order to quantify the effect we have defined the efficiency of the ultrasonic control of algae at a specific frequency as: (% inactivation of the algae) / (ultrasonic intensity applied). When this is applied to the results at different frequencies the order of efficiency for algae reduction is 20 < 1146 < 864 < 580 kHz. This suggests that ultrasound can offer a suitable method for algae inactivation or control but the sonication conditions must be taken into account.
蓝藻是具有一些藻类特征的光合细菌。一些蓝藻会产生毒素，这些毒素已被证明对动物和人类都有危害。以前的研究表明，尽管尚未确定确保有效和节能处理的最佳超声参数设置，但功率超声可以提供一种控制藻类大量繁殖的合适方法。在这项工作中，研究了 20、40、580、864 和 1146 kHz 频率下的超声对铜绿微囊藻悬浮液的影响。结果表明，藻类数量的减少取决于频率和强度。为了量化这种影响，我们将特定频率下超声控制藻类的效率定义为：（藻类失活的百分比）/（施加的超声强度）。当将其应用于不同频率的结果时，藻类减少的效率顺序为 20 < 1146 < 864 < 580 kHz。这表明超声可以提供一种合适的藻类灭活或控制方法，但必须考虑声处理条件。
