Laboratory testing to control algae blooms by ultrasound
Authors
Luis Alfredo Kieffer, Patricia de la Sierra, Melina Devercelli, Julio Luna, Marìa Claret, Estefanìa LeizFiles
Key Information
Journal
Published in Vol. 26 No. 50 (2015) of Ciencia, Docencia y Tecnología.
Ciencia, Docencia y Tecnología is a refereed, multidisciplinary open access scientific journal that aims to contribute to the development of scientific knowledge in Argentina and Latin America. Since 1990 it has been edited and funded by the National University of Entre Ríos and publishes original research articles in Spanish and Portuguese by national and international researchers. Until 2020, CDyT was published in May and November. As of Num. 62 may-ago (2021), it adopts the continuous publication mode, publishing three issues in April, August and December.
About the JournalAbstract
An increased development of Cyanophyceae produced by eutrophication of the aquatic environments yields algae blooms and compounds with unpleasant odors and flavors as well as liberation of toxic metabolites. Excessive algae growth is also a problem for water that can be used for human consumption or industrial processes, but treatment for their removal leads to increases in operating costs. In this paper, the use of ultrasound to control algal blooms, in particular Cyanophyceae, at laboratory level is assayed. The results obtained (using a frequency of 20 kHz and a power of 9 W) show that organisms belonging to classes Chrysophyceae, Euglenophyceae and Chlorophyceae were removed after 5 minutes of exposure, and Raphidiopsis mediterranean within the first 10 minutes, while reduction was 98% for M. aeruginosa and 99% for Dolichospermum spiroides after 60 minutes.
