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Int. J. Mol. Sci. 2015, 16(6), 13158-13171; doi:10.3390/ijms160613158

A New Treatment Strategy for Inactivating Algae in Ballast Water Based on Multi-Trial Injections of Chlorine

College of Marine Engineering, Dalian Maritime University, Dalian 116026, China
College of Information and Science Technology, Dalian Maritime University, Dalian 116026, China
Authors to whom correspondence should be addressed.
Academic Editor: Christopher Q. Lan
Received: 2 March 2015 / Revised: 27 May 2015 / Accepted: 1 June 2015 / Published: 9 June 2015
(This article belongs to the Special Issue Microalgal Biotechnology)
View Full-Text   |   Download PDF [858 KB, uploaded 9 June 2015]   |  


Ships’ ballast water can carry aquatic organisms into foreign ecosystems. In our previous studies, a concept using ion exchange membrane electrolysis to treat ballast water has been proven. In addition to other substantial approaches, a new strategy for inactivating algae is proposed based on the developed ballast water treatment system. In the new strategy, the means of multi-trial injection with small doses of electrolytic products is applied for inactivating algae. To demonstrate the performance of the new strategy, contrast experiments between new strategies and routine processes were conducted. Four algae species including Chlorella vulgaris, Platymonas subcordiformis, Prorocentrum micans and Karenia mikimotoi were chosen as samples. The different experimental parameters are studied including the injection times and doses of electrolytic products. Compared with the conventional one trial injection method, mortality rate time (MRT) and available chlorine concentration can be saved up to about 84% and 40%, respectively, under the application of the new strategy. The proposed new approach has great potential in practical ballast water treatment. Furthermore, the strategy is also helpful for deep insight of mechanism of algal tolerance. View Full-Text
Keywords: ballast water treatment; ion-exchange membrane electrolysis; algal; chlorine; multi-injection ballast water treatment; ion-exchange membrane electrolysis; algal; chlorine; multi-injection

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Sun, J.; Wang, J.; Pan, X.; Yuan, H. A New Treatment Strategy for Inactivating Algae in Ballast Water Based on Multi-Trial Injections of Chlorine. Int. J. Mol. Sci. 2015, 16, 13158-13171.

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