Fe_(3)O_(4)对微藻-乙醇液化制备生物油和脱硝生物焦的影响机制研究  

EFFECTS OF Fe_(3)O_(4)ON PREPARATION OF BIO-OIL AND DENITROGENATED BIOCHAR BY MICROALGAE LIQUEFACTION IN ETHANOL

作　　者：张涛 泮浩翔 高涣庭 龚勋[2] Zhang Tao;Pan Haoxiang;Gao Huanting;Gong Xun(Shanghai Power Equipment Research Institute Co.,Ltd.,Shanghai 200240,China;National Key Laboratory of Coal Combustion and Low Carbon Utilization,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]上海发电设备成套设计研究院有限责任公司,上海200240 [2]华中科技大学煤燃烧与低碳利用全国重点实验室,武汉430074

出　　处：《太阳能学报》2025年第4期619-627,共9页Acta Energiae Solaris Sinica

摘　　要：基于磁性收获后的微藻在乙醇中液化制备高品质生物油,副产物Fe_(3)O_(4)负载的富氮微藻生物焦回收再利用,测试其在低温(150℃)条件下的脱硝性能,并通过漫反射傅里叶变换红外光谱表征技术对脱硝潜在路径进行探讨。Fe_(3)O_(4)在液化过程中可促进微藻中蛋白质的分解,提高油产率的同时吡啶及吡咯化合物在生物焦中的占比增加。负载Fe_(3)O_(4)后能显著增加其性能,这是生物焦中各种官能团与Fe_(3)O_(4)在还原反应中共同作用的结果。The microalgae harvested by magnetic separation were liquefied in ethanol to prepare high-quality bio-oil,and the by-prod⁃uct Fe_(3)O_(4)-loaded nitrogen-enrich microalgae biochar was recovered and reused.The denitrification performance at low temperature(150℃)was tested,and potential pathways of denitrification were explored by in-situ DRIFTS.The results show that Fe_(3)O_(4)promotes the decomposition of proteins in microalgae during the liquefaction process and increases the oil yiels.Meanwhile,the percentage of pyr⁃idine and pyrrole compounds in the biochar increases.The loading of Fe_(3)O_(4)can effectively improve the denitrification efficiency of the biochar,which was the result of the synergistic effect of oxygen-and nitrogen-containing functional groups on the surface of algae-based biochar and Fe_(3)O_(4)in the denitrification reaction.

关 键 词：微藻 生物质 生物油 生物焦 脱硝 Fe_(3)O_(4) 

分 类 号：X701[环境科学与工程—环境工程]