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. | Journal of Science and Technology 54 (2A) (2016) 307-313 THE CULTIVATION OF SPIRULINA PLATENSIS ON VERTICAL AEROPONIC SUBSTRATES Nguyen Thi Lien, Le Dang Phuong Chi, Nguyen Thi Lien Thuong* Faculty of Resources and Environment, Thu Dau Mot University, No 6 Tran Van On street, Phu Hoa ward, Thu Dau Mot city, Binh Duong province, Vietnam * Email: lienthuong@ Received: 10 May 2016; Accepted for publication: 25 June 2016 ABSTRACT 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 lights on a 24 hours off light cycle, microalgae density (OD560 = ), 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 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 g m-2d-1 and the areal growth rate of g/ m² respectively. Keywords: Spirulina platensis, aeroponic, the production of algal biomass. 1. INTRODUCTION Spirulina platensis, is a cyanobacterium, also known as blue-green algae. Spirulina platensis is a source of protein and contains several vitamins, minerals and polyunsaturated fatty acids such as gamma-linolenic acid, hycocyanin [1] and ω-3 and ω-6 polyunsaturated fatty acids [2], which is an important .
