Manganese Ferrite Nanoparticle-Assisted Enhancement of Photosynthetic Carbon Sequestration in Microalgae

With increasing global greenhouse gas emissions, carbon dioxide (CO2) reduction and fixation has become an important issue for global environmental protection. The use of microalgae photosynthesis to fix CO2 is a green method to reduce carbon emissions. This can also realize the resourceful use of carbon, which is in line with a sustainable development strategy. This study addresses the problem of limited light absorption and utilization efficiency of microalgae. This can result in low photosynthetic carbon sequestration efficiency. How to enhance the photosynthetic carbon sequestration performance of microalgae is the core of this study. We constructed a microalgae carbon sequestration reaction system and added manganese ferrite nanomaterials to the microalgae reaction system to improve the photosynthetic carbon sequestration efficiency of the microalgae. The results show that the addition of 90 mg/L of manganese ferrite nanoparticles offered a significant growth advantage for microalgae. This increased the photosynthetic reaction activity by promoting the electron transfer rate. This significantly enhanced the photosynthetic carbon fixation efficiency of the microalgae, when held under a 40% CO2 environment. The results of this study may provide a possible breakthrough for microalgal carbon sequestration. This may advance the feasibility of industrial applications for microalgal carbon sequestration.