Figure 4

The CH4 amount (v/v) of biogas over time at cultures 2 under the mixed LED light wavelength treatments for the three selected microalgae species: (a) Chlorella vulgaris, (b) Scenedesmus obliquus, and (c) Nitzschia palea.
The CH4 amount (v/v) of biogas over time at cultures 2 under the mixed LED light wavelength treatments for the three selected microalgae species: (a) Chlorella vulgaris, (b) Scenedesmus obliquus, and (c) Nitzschia palea.