Research Article
Enhancing Algal Growth by Stimulation with LED Lighting and Ultrasound
Table 2
Seven factors and two levels of the orthogonal array
(2
7).
| | Factors | Specifics | Level 1 | Level 2 |
| | Temperature (°C) | 25 | 30 | | LED irradiation intensity (lux) | 3000 | 8000 | | LED irradiation time (hr) | 12 | 24 | | Pumping intensity (c.c./min) | 0 | 2000 | | Ultrasound frequency (MHz) | 0.5 | 1 | | Ultrasound voltage (Volt) | 5.5 | 18.5 | | Ultrasound exposure time | 10 s | 15 min |
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