Wang Yazhuo, Li Denian, Zhao Dandan, Fan Yukun, Bi Jingwang, Shan Rui, Yang Jizhang, Luo Bo, Yuan Haoran, Ling Xiang, Huhe Taoli, Chen Yong
School of Mechanical and Power Engineering, Nanjing Technology University, Nanjing 211816, China.
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, No.2 Nengyuan Road, Wushan, Tianhe District, Guangzhou, Guangdong 510640, China.
ACS Omega. 2020 Jul 6;5(28):17471-17478. doi: 10.1021/acsomega.0c01970. eCollection 2020 Jul 21.
In this contribution, biochar from municipal sludge was used as a novel matrix for the synthesis of a series of calcium-based heterogeneous catalysts toward biodiesel production. Their catalytic activity was investigated in terms of catalyst loading and calcination temperature during preparation, in addition to the transesterification parameters including the methanol/oil molar ratio, reaction time, and catalyst amount. The highest biodiesel yield up to 93.77% was achieved with the 30Ca/A-SBC-700, and it maintained as high as 84.9% even after 10 cycles of a consecutively alternating catalysis and regeneration process. It was revealed that the porous municipal sludge biochar and autologous SiO were accountable for the superior stability of the present catalyst. This work may provide a new path to value-added valorization of sludge waste and also a renewable and efficient catalyst for biodiesel production at a low cost.
在本研究中，城市污泥生物炭被用作一种新型基质，用于合成一系列用于生物柴油生产的钙基多相催化剂。除了酯交换参数（包括甲醇/油摩尔比、反应时间和催化剂量）外，还研究了制备过程中催化剂负载量和煅烧温度对其催化活性的影响。30Ca/A-SBC-700实现了高达93.77%的最高生物柴油产率，即使在连续交替催化和再生过程进行10个循环后，其产率仍高达84.9%。结果表明，多孔的城市污泥生物炭和自生SiO对本催化剂的优异稳定性起作用。这项工作可能为污泥废物的增值利用提供一条新途径，也为低成本生产生物柴油提供一种可再生且高效的催化剂。
