Table 1.
Average colony counts and average percentage destruction of Bacillus cereus spores on metal substrate for various configurations
| Time of exposure (h) | Dark control | UV-A photolysis | Photocatalysis | Enhanced photocatalysis | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ave. colony count | Ave. percentage dest. | SD percentage dest. | Ave. colony count | Ave. percentage dest. | SD percentage dest. | Ave. colony count | Ave. percentage dest. | SD percentage dest. | Ave. colony count | Ave. percentage dest. | SD percentage dest. | |
| 0 | 284 | 0.00 | 0.00 | 284 | 0.00 | 0.00 | 284 | 0.00 | 0.00 | 284 | 0.00 | 0.00 |
| 4 | 277 | 2.46 | 8.60 | 221 | 22.24 | 4.48 | 67 | 76.41 | 3.42 | 6 | 97.89 | 1.05 |
| 16 | 272 | 4.17 | 6.64 | 191 | 32.75 | 5.76 | 38 | 86.62 | 8.43 | 1 | 99.65 | 0.57 |
| 24 | 280 | 1.29 | 9.30 | 128 | 54.81 | 5.05 | 3 | 98.94 | 3.13 | 0 | 100.00 | 0.00 |