Effects of red and blue light emitting diodes on biomass and astaxanthin of Haematococcus pluvialis in pilot scale angled twin-layer porous substrate photobioreactors

In this study, for the purpose of cost reduction, H. pluvialis is grown in pilot scale angled twin-layer porous substrate photobioreactors with light energy from red/blue LEDs that can produce red light, blue light, or a combination of blue-red light. The total dry biomass of the microalgae reached a maximum of 40.74 g.m-2 under blue-red LEDs.