THE CULTIVATION OF SPIRULINA PLATENSIS ON VERTICAL AEROPONIC SUBSTRATES

Nguyen Thi Lien
2018 Vietnam Journal of Science and Technology  
To improve the efficiency of algae production process, most studies have focused on selecting algal strains; controlling nutrient, temperatures and pH as well as biomass processing technologies. However, technical innovations in algae cultivation have remained elusive. For this reason, a new technique in cultivation system was studied to determine if it could produce significant quantities of biomass compared to the traditional hydroponic system. After 8 days at same culture conditions: LED
more » ... conditions: LED lights on a 24 hours off light cycle, microalgae density (OD560 = 1.4), 40 mL of the inoculum, luminosity 2000 lux and temperature was maintained between 25–26 °C, the algae was harvested and the effluent was collected for measuring dry weight of algal biomass. The vertical substrate system have a greater productivity on the substrate based system than traditional hydroponic system. There was increased up to 1.7 times for biomass dry weight in substrate-grown system compared to aqueous-grown system after 8 days of growth. This vertical substrate system produced significant areal yield of 0.8 g m-2d-1 and the areal growth rate of 9.1 g/ m² respectively.
doi:10.15625/2525-2518/54/2a/11946 fatcat:4oeedylys5acjnr6gz3dsdxzm4