2.2. Cultivation of Spirulina maxima. Spirulina maxima was
cultivated in laboratory-scale reactors, at 35∘C [23] for 4
months. The cultures were carried out under 12 : 12 photoperiod
conditions (12 hr light : 12 hr dark cycles), provided
with artificial illumination of 19Wm−2 intensity. In order
to improve growth, algal scalability tests were performed in
three consecutive systems of increasing capacity. Microalga
cultivation started with a working capacity of 1 L and, due to
cell passaging, 5 L and 40 L reactor systems were examined,
as well.