The Effect of Light on Nitrogen Removal by Microalgae-Bacteria Symbiosis System (MBS)

The littering of nitrogen into water bodies has led to several adverse effects on the environment. Nitrification-denitrification is still a prevalent method for removing nitrogen from water bodies, which demands high energy consumption and complex operational conditions. In recent years, MBS has attracted much attention because of its advantages in recovering nitrogen, emitting oxygen, and capturing CO2. It has been proven that light is the top factor influencing the performance of MBS. This paper will critically review the effects of light parameters on nitrogen removal by MBS, and the nitrogen-removal mechanisms of MBS driven by artificial illumination.

Automated summary

The littering of nitrogen into water bodies has caused negative environmental impacts. Nitrification-denitrification is commonly used for nitrogen removal, but it requires high energy consumption and complex operational conditions. In recent years, MBS has gained attention due to its advantages in recovering nitrogen, emitting oxygen, and capturing CO2. Light has been identified as the key factor influencing MBS performance. This paper critically reviews the effects of light parameters on nitrogen removal by MBS and the nitrogen-removal mechanisms driven by artificial illumination.