EVALUATION OF MICROALGAE POTENTIAL FOR BIODIESEL PRODUCTION IN ENTROPY WEIGHT THEORY

Combined with outdoor seasonal temperature variation in Qingdao, East China, we evaluated in entropy weight theory on nine microalgae for possible outdoor large-scale biodiesel production making use of discharged CO2 from local power plants. Five indicators including oil yield, oil composition, CO2 tolerance, difficulty of breakage, and temperature adaptability were selected to calculate the entropy weight based on laboratory measurements. Weights for the above five indicators in spring and winter were 0.261, 0.002, 0.059, 0.211, and 0.467, while in summer and autumn were 0.098, 0.001, 0.022, 0.079 and 0.801, respectively. Therefore, microalgae in maximum potential for large-scale biodiesel production in spring and winter could be Nannochloropsis sp. ZL-12, while in the summer and autumn the Isochrysis galbana C5001. The method provides an effective way for microalgae strain selection for outdoor large-scale biodiesel production.