Abstract
Green algae Cladophora aegagropila, present in cooling water of thermal power plants, causes many problems and complications, especially during summer. However, algae and its metabolites are rarely eliminated by common removal methods. In this work, the elimination efficiency of electrochemically prepared potassium ferrate(VI) on algae from cooling water was investigated. The influence of experimental parameters, such as Fe(VI) dosage, application time, pH of the system, temperature and hydrodynamics of the solution on removal efficiency, was optimized. This study demonstrates that algae C. aegagropila can be effectively removed from cooling water by ferrate. Application of ferrate(VI) at the optimized dosage and under the suitable conditions (temperature, pH) leads to 100% removal of green algae Cladophora from the system. Environmentally friendly reduction products (Fe(III)) and coagulation properties favour the application of ferrate for the treatment of water contaminated with studied microorganisms compared to other methods such as chlorination and use of permanganate, where harmful products are produced.
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The authors gratefully acknowledge the financial support provided by the Ministry of Education, Science, Research and Sport of the Slovak Republic for project VEGA 1/0543/15. The authors would also like to thank the Slovak University of Technology Grant scheme for Support of Excellent Teams of Young Researchers for financial assistance (Kubiňáková).
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Responsible editor: Vitor Manuel Oliveira Vasconcelos
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Kubiňáková, E., Híveš, J., Gál, M. et al. Effect of ferrate on green algae removal. Environ Sci Pollut Res 24, 21894–21901 (2017). https://doi.org/10.1007/s11356-017-9846-z
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DOI: https://doi.org/10.1007/s11356-017-9846-z