Abstract
Bench scale tests were conducted to investigate the effect of potassium permanganate pre-oxidation on the photosynthetic activity and molecular weight distribution of Anabaena spiroides. Different concentrations of potassium permanganate were added into the suspension of Anabaena spiroides, one of the dominant algae in water bloom, and after pre-oxidation of permanganate for 1 h, the results show that the removal rate significantly increases by 33.99~36.35% compared to direct coagulation. Then, the algal characteristics, including photosynthetic ability, the changes in extracellular organic matter three-dimensional fluorescence, and the distribution of molecular weight were conducted and the results show that along with increasing concentration of potassium permanganate, the photosynthetic ability of algae decreases, more extracellular organic matter is secreted, and large molecular weight matter (humic-like and fulvic-like substances) are generated. Therefore, this study demonstrates that potassium permanganate could be used in addressing the algae-rich water.
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This work was supported by the Major Project of Shanghai Scientific and Technological Committee (14231200404).
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Responsible editor: Vitor Manuel Oliveira Vasconcelos
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Qiao, J., Zhang, X. & Lv, L. Removal of Anabaena spiroides by potassium permanganate pre-oxidation: effect on photosynthetic capacity and molecular weight distribution. Environ Sci Pollut Res 24, 24207–24213 (2017). https://doi.org/10.1007/s11356-017-0060-9
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DOI: https://doi.org/10.1007/s11356-017-0060-9