In addition to being a source of secondary biofuels and value-added compounds, the spentbio — mass of algae may also be applied as CO2 sequester and wastewater treatment, as detailed next.

10.4.1 Carbon Dioxide Sequestering

Algae have higher growth rates and higher photosynthetic efficiencies than terrestrial plants, so they are more efficient in capturing atmospheric carbon (Packer, 2009). However, flue gases from industrial plants have been reported as a suitable feed of algae. The use of algae for carbon sequestration is at present considered feasible if they are used as biofuel feedstock rather than merely as a carbon sequester (Suali and Sarbatly, 2012).