An Environmentally Friendly Method for Testing Photocatalytic Inactivation of Cyanobacterial Propagation on a Hybrid Ag-TiO2 Photocatalyst under Solar Illumination
Abstract
:1. Introduction
2. Materials and Methods
2.1. Preparation of Ag-TiO2 Film Supported on Diatomite
2.2. Cultivation of Cyanobacteria
Cyanobacteria | Treatment | Nutrients | |||
---|---|---|---|---|---|
Light (Μe/m2s) | NO3−1-N (mg/L) | NH3-N (mg/L) | PO4−3-P (mg/L) | ||
Microcystis aeruginosa | ASM-1 a | 30 | 32.8 ± 2.6 | - | 3.2 ± 0.3 |
Oscillatoria tenuisa | DY-3 b | 32 | 6.8 ± 0.4 | - | 0.7 ± 0.1 |
2.3. Photocatalytic Inactivation of Cyanobacteria
2.4. Analytical Methods
2.5. Mutagenicity Tests
3. Results and Discussion
3.1. Inhibition of Cyanobacterial Growth
3.2. Fate of Metabolic Products During Photocatalysis
Samples | Dose (L Per Plate) | Mean Revertant Colonies/Plate | ||||||
---|---|---|---|---|---|---|---|---|
TA98 | TA100 | |||||||
−S9 a | +S9 b | −S9 | +S9 | |||||
Blank control | 0 | 27 ± 7 c | 51 ± 6 | 184 ± 15 | 207 ± 24 | |||
Microcystis aeruginosa | 4.0 | 52 ± 8 | 92 ± 12 | 322 ± 37 | 452 ± 30 d | |||
2.0 | 42 ± 4 | 76 ± 16 | 274 ± 25 | 436 ± 19 d | ||||
1.0 | 37 ± 6 | 68 ± 8 | 245 ± 13 | 365 ± 27 | ||||
0.5 | 33 ± 7 | 66 ± 5 | 196 ± 18 | 377 ± 33 | ||||
0.25 | 31 ± 5 | 60 ± 7 | 208 ± 26 | 349 ± 25 | ||||
Oscillatoria tenuisa | 4.0 | 45 ± 3 | 86 ± 11 | 280 ± 16 | 428 ± 35 d | |||
2.0 | 48 ± 6 | 79 ± 12 | 286 ± 28 | 386 ± 21 | ||||
1.0 | 37 ± 5 | 78 ± 5 | 256 ± 12 | 391 ± 28 | ||||
0.5 | 31 ± 6 | 62 ± 4 | 252 ± 8 | 345 ± 52 | ||||
0.25 | 34 ± 7 | 55 ± 13 | 197 ± 15 | 293 ± 18 |
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Chang, S.-Y.; Huang, W.-J.; Lu, B.-R.; Fang, G.-C.; Chen, Y.; Chen, H.-L.; Chang, M.-C.; Hsu, C.-F. An Environmentally Friendly Method for Testing Photocatalytic Inactivation of Cyanobacterial Propagation on a Hybrid Ag-TiO2 Photocatalyst under Solar Illumination. Int. J. Environ. Res. Public Health 2015, 12, 15819-15833. https://doi.org/10.3390/ijerph121215023
Chang S-Y, Huang W-J, Lu B-R, Fang G-C, Chen Y, Chen H-L, Chang M-C, Hsu C-F. An Environmentally Friendly Method for Testing Photocatalytic Inactivation of Cyanobacterial Propagation on a Hybrid Ag-TiO2 Photocatalyst under Solar Illumination. International Journal of Environmental Research and Public Health. 2015; 12(12):15819-15833. https://doi.org/10.3390/ijerph121215023
Chicago/Turabian StyleChang, Shu-Yu, Winn-Jung Huang, Ben-Ren Lu, Guor-Cheng Fang, Yeah Chen, Hsiu-Lin Chen, Ming-Chin Chang, and Cheng-Feng Hsu. 2015. "An Environmentally Friendly Method for Testing Photocatalytic Inactivation of Cyanobacterial Propagation on a Hybrid Ag-TiO2 Photocatalyst under Solar Illumination" International Journal of Environmental Research and Public Health 12, no. 12: 15819-15833. https://doi.org/10.3390/ijerph121215023