Open AccessTHE CULTIVATION OF SPIRULINA PLATENSIS ON VERTICAL AEROPONIC SUBSTRATES
Author(s) -
Nguyễn Thị Thu Liên
Publication year - 2018
Publication title -
vietnam journal of science and technology/science and technology
Language(s) - English
Resource type - Journals
eISSN - 2815-5874
pISSN - 2525-2518
DOI - 10.15625/2525-2518/54/2a/11946
Subject(s) - spirulina (dietary supplement) , biomass (ecology) , algae , substrate (aquarium) , effluent , productivity , dry weight , nutrient , photobioreactor , environmental science , food science , horticulture , pulp and paper industry , botany , biology , zoology , environmental engineering , agronomy , ecology , raw material , macroeconomics , economics , engineering
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 = 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.