Microalgae can easily growth (Fig. 3) in fresh water, saline water, and waste waters (e.g. POME and mixed of POME and rubber waste).
The growth speed of microalgae strain (Spirulina sp.) depends on the growth medium
(Fig. 3).
The growth of this strain in the saline water is the highest one.
It follows by fresh water, POME, and mixed of POME-rubber waste respectively.
The saline water is the original growth medium of Spirulina sp.
By special culturing and pre-treatment methods, Spirulina sp. can also be cultivated in the waste waters.
On the other hand, The Chlorella sp. growth at waste water medium 20% POME has the highest biomass content compared to other concentrations.
The biomass forming and the lipid content of Chlorella sp. in various waste water concentrations can be seen in Fig. 4.