Spectral conversion of light using Rhodamine ۶G for enhancing the nitrate removal rate of green microalgae Chlorella sp.

Nitrate removal by chlorella sp. under different illumination conditions was evaluated in this study. White and modified white light by R۶G at intensity of ۳۰۰ µmol m-۲s-۱ were considered as light sources. The results corroborate the fact that spectral shifting by using R۶G solution caused about ۲-fold increase of biomass production. Additionally, it performed ۱۰۰% efficiency in N removal in only two days which was the shortest processing time compared to other cultures. The advantage of R۶G employment as a light shifter revealed its effectiveness over white light.

Keywords:

Microalgae , nitrate removal , specral conversion , Chlorella sp.