Abstract: “The advantages of Nannochloropsis oculata include fast growing and high oxygen production. The amount of oxygen production is higher than the dissolved oxygen saturation value of air in water. Therefore, this study aimed to build a photosynthetic fixed-biofilm microbial fuel cell (P-FMFC) system, which compare different growth period of N. oculata as the cathode, and performing power generation. The results showed that:(1) The dissolved oxygen of P-FMFC is 15 mg/L under steady state is better than control (7.1 mg/L); (2) Electricity generation was enhanced significantly with sufficient oxygen as the terminal electron acceptor in the P-FMFC system. Oxygen was provided via photosynthesis with N. oculata in the cathode chamber (3)The growth rate of N. oculata was intended 0.00754 hr-1 when in close circuit, higher than the open circuit 0.00680 hr-1.”

Keywords: Nannochloropsis oculata, microbial fuel cell, dissolved oxygen, Electricity gerneration