Fe3O4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

张涛; 泮浩翔; 高涣庭; 龚勋

doi:10.19912/j.0254-0096.tynxb.2023-2101

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (4) : 619-627. DOI: 10.19912/j.0254-0096.tynxb.2023-2101

Fe₃O₄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

张涛¹, 泮浩翔¹, 高涣庭², 龚勋²

作者信息 +

EFFECTS OF Fe₃O₄ ON PREPARATION OF BIO-OIL AND DENITROGENATED BIOCHAR BY MICROALGAE LIQUEFACTION IN ETHANOL

Zhang Tao¹, Pan Haoxiang¹, Gao Huanting², Gong Xun²

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文章历史 +

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Fe₃O₄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。Fe₃O₄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Fe₃O₄后能显著增加其性能,这是生物焦中各种官能团与Fe₃O₄在还原反应中共同作用的结果。

Abstract

The microalgae harvested by magnetic separation were liquefied in ethanol to prepare high-quality bio-oil, and the by-product Fe₃O₄-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 Fe₃O₄ promotes the decomposition of proteins in microalgae during the liquefaction process and increases the oil yiels. Meanwhile, the percentage of pyridine and pyrrole compounds in the biochar increases. The loading of Fe₃O₄ 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 Fe₃O₄ in the denitrification reaction.

导出引用

张涛, 泮浩翔, 高涣庭, 龚勋. Fe₃O₄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[J]. 太阳能学报. 2025, 46(4): 619-627 https://doi.org/10.19912/j.0254-0096.tynxb.2023-2101

Zhang Tao, Pan Haoxiang, Gao Huanting, Gong Xun. EFFECTS OF Fe₃O₄ ON PREPARATION OF BIO-OIL AND DENITROGENATED BIOCHAR BY MICROALGAE LIQUEFACTION IN ETHANOL[J]. Acta Energiae Solaris Sinica. 2025, 46(4): 619-627 https://doi.org/10.19912/j.0254-0096.tynxb.2023-2101

中图分类号： X701

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