Research on Inhibitive Behaviors of Electrolysis on the Growth of Microcystis aeruginosa

Research on Inhibitive Behaviors of Electrolysis on the Growth of Microcystis aeruginosa

Electrochemical method using a novel Ti/RuO 2 anode was employed to inhibit a typical cyanobacteria, Microcystis aeruginosa (M. aeruginosa) under different electrolytic conditions. It is demonstrated that Ti/RuO 2 anode was more efficient than traditional graphite anode in M. aeruginosa inhibition....

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Bibliographic Details
Published in:Environmental technology Vol. 27; no. 6; pp. 673 - 682
Main Authors: Xu, Y.F., Yang, J., Ou, M.M., Wang, Y.L., Jia, J.P., Pan, H.D.
Format: Journal Article
Language:English
Published: London Taylor & Francis Group 01-06-2006
Selper
Subjects:
Applied sciences
BIOMASS
Chlorophyll - chemistry
Chlorophyll - metabolism
Electrochemistry
Electrodes
Electrolysis
ELECTROLYSIS OPERATING FACTORS
Electrolytes
ELECTRON PARAMAGNETIC RESONANCE
Electron Spin Resonance Spectroscopy
Exact sciences and technology
INHIBITING RATE
Microcystis - chemistry
Microcystis - growth & development
MICROCYSTIS AERUGINOSA
Phycocyanin - chemistry
Phycocyanin - metabolism
Pollution
Ruthenium Compounds - chemistry
Spectrophotometry, Ultraviolet
Time Factors
Titanium - chemistry
UV-VISIBLE
Waste Disposal, Fluid - methods
Water Microbiology
Water Purification - methods
Microcystis aeruginosa
Electrochemical treatment
Electrochemical method
Biomass
Sulfates
Density
Free radical
inhibiting rate
Ultraviolet radiation
Electrolysis
Electrolyte
electron paramagnetic resonance
Chlorides
UV-Visible
electrolysis operating factors
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Summary:Electrochemical method using a novel Ti/RuO 2 anode was employed to inhibit a typical cyanobacteria, Microcystis aeruginosa (M. aeruginosa) under different electrolytic conditions. It is demonstrated that Ti/RuO 2 anode was more efficient than traditional graphite anode in M. aeruginosa inhibition. The experimental results showed that the higher current density or longer electrolytic time could effectively improve the inhibition of M. aeruginosa. In addition, sodium chloride was a more effective electrolyte than sodium sulfate to enhance inhibition. The maximum inhibiting rate close to 100% could be obtained at a current density of 12 mA cm −2 when sodium chloride was used as a supporting electrolyte. Furthermore, UV-Visible spectra demonstrated that the structures of phycocyanins and chlorophyll a (Chl a) in M. aeruginosa could be changed or destroyed during electrolysis. Moreover, EPR spectra showed the generation of the free radicals through electrolysis, which might be one of the reasons responsible for the inhibition of algal growth.
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ISSN:0959-3330
1479-487X
DOI:10.1080/09593332708618682