【摘要】 结合藻类生物与微生物燃料电池的装置称为光合藻类微生物燃料电池（Photosynthetic Algae Microbial Fuel Cell,PAMFC），它集发电、污水处理、CO₂固定为一体，是近年来MFC的一个重要研究方向。阴极室内的藻类生物通过光合作用释放的O₂可同时作为电子受体，但较低的O₂生成速率形成较大的活化内阻。本文在兼顾小球藻生长所需营养的前提下，选择了氯化铵和硝酸钠作为额外电子受体，实验研究其对PAMFC产电性能、固碳效率以及藻类生物量积累的影响。结果表明，向阴极液中加入氯化铵和硝酸钠都可以提高电子传递效率和PAMFC的性能，加入了硝酸根的PAMFC，最大输出电压达到182.5mV，相较于普通PAMFC提高了26.82%；最大功率密度389.43mW/m²比普通PAMFC提高了40.94%;CO₂固定效率最高为113.59 mg/L/Day，相比于未额外添加电子受体的PAMFC提高了17%。更多还原

【Abstract】 The device that combines algae and microbial fuel cells is called a Photosynthetic Algae Microbial Fuel Cell（PAMFC）,which integrates power generation, sewage treatment, and CO₂ fixation. It is an important research direction in MFC in recent years. The O₂ released by algal organisms in the cathode chamber through photosynthesis can simultaneously serve as electron acceptors, but the lower O₂ generation rate forms a larger activation resistance. In this study, ammonium chloride and sodium nitrate were selected as additional electron acceptors while taking into account the nutrients required for the growth of microalgae. The effects of ammonium chloride and sodium nitrate on the electricity production performance, carbon fixation efficiency, and algal biomass accumulation of PAMFC were experimentally investigated. The results showed that adding ammonium chloride and sodium nitrate to the catholyte could improve the electron transfer efficiency and performance of the PAMFC. The PAMFC with nitrate added achieved a maximum output voltage of 182.5mV, which was26.82% higher than that of ordinary PAMFC. The maximum power density of 389.43mW/m² has increased by 40.94% compared to ordinary PAMFC. The highest CO₂ fixation efficiency is 113.59 mg/L/Day, which is 17% higher than PAMFC without additional electron acceptors added.更多还原