Yang Jian, Hong Chen, Xing Yi, Zheng Zixuan, Li Zaixing, Zhao Xiumei, Lü Yongtao, Lü Jianwei
Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing Beijing 100083 China
Department of Environmental Engineering, Hebei University of Science and Technology Shijiazhuang 050018 China
RSC Adv. 2021 Aug 5;11(43):26763-26772. doi: 10.1039/d1ra03860e. eCollection 2021 Aug 2.
In this study, the antibiotic residue was used as a raw material to catalyze hydrothermal liquefaction (HTL) in an ethanol-water system to prepare bio-oil. The study explored the effects of ethanol-water ratio and three kinds of molecular sieve catalysts (HZSM-5, MCM-41, and γ-AlO) on the yield and characterization of bio-oil. The experimental results showed that the highest bio-oil yield was obtained at the ethanol-water ratio of 1 : 1 and the three kinds of molecular sieve catalysts of 15%. GC-MS, H NMR, TGA, and CHNS were used for the characterization of bio-oil. Higher carbon (up to 71.44%), hydrogen (up to 9.376%), and a high heating value (HHV, 34.714 MJ kg) were observed for catalytically liquefied bio-oil compared to non-catalytically liquefied bio-oil. The analysis of aqueous phase products indicated the existence of valuable nutrients. Besides, the reusability of three kinds of molecular sieve catalysts indicated that catalysts could be successfully reused several times and continuously exhibited the catalyst effect.
在本研究中，抗生素残渣被用作原料，在乙醇 - 水体系中催化水热液化（HTL）以制备生物油。该研究探讨了乙醇 - 水比例以及三种分子筛催化剂（HZSM - 5、MCM - 41和γ - AlO）对生物油产率和特性的影响。实验结果表明，在乙醇 - 水比例为1∶1且三种分子筛催化剂用量为15%时获得了最高生物油产率。采用气相色谱 - 质谱联用仪（GC - MS）、核磁共振氢谱（H NMR）、热重分析仪（TGA）和元素分析仪（CHNS）对生物油进行表征。与非催化液化生物油相比，催化液化生物油具有更高的碳含量（高达71.44%）、氢含量（高达9.376%）和高热值（HHV，34.714 MJ kg）。水相产物分析表明存在有价值的营养物质。此外，三种分子筛催化剂的可重复使用性表明催化剂能够成功重复使用多次，并持续发挥催化作用。
