Innovative magnetic catalyst facilitates biodiesel production via transesterification of sunflower and waste cooking oils

被引:8
作者
Godarzi, Ali [1 ]
Vaziri, Pouya [1 ]
Akhlaghian, Faranak [1 ]
Rahmani, Farhad [1 ]
Khaledian, Milad [1 ]
机构
[1] Univ Kurdistan, Fac Engn, Dept Chem Engn, Sanandaj, Iran
关键词
Biodiesel; magnetic catalyst; sunflower oil; transesterification; waste cooking oil; SOYBEAN OIL; OPTIMIZATION;
D O I
10.1080/15567036.2023.2272671
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The surging global demand for biofuels, precipitated by concerns regarding fossil fuel limitations and their associated environmental consequences has thrust biodiesel into the spotlight as a promising alternative of energy source. In this research endeavor, a novel magnetic catalyst, denoted as K compounds/Fe3O4, was developed by incorporating potassium into the magnetite structure via sol-gel method. This catalyst was applied in the transesterification reaction to convert sunflower and waste cooking oils to biodiesel. It was found that the most effective catalyst for biodiesel production was synthesized by using potassium nitrate at a concentration of 1 M and calcination temperature of 550 degrees C in the catalyst preparation stage. The K compounds/Fe3O4 catalyst was characterized by XRD, XRF, FTIR, SEM, ASAP, and VSM techniques. SEM images demonstrated the porous structure of the catalyst. The GC-mass analysis confirmed the formation of fatty acid methyl esters. The effects of the operating conditions including reactor temperature (55 to 75 degrees C), catalyst dosage (2.5 to 12.5 wt.%), methanol to oil molar ratio (9:1 to 18:1), time (4 to 14 h) were investigated. The best operating conditions were selected inclusive of temperature 65 degrees C, catalyst dosage 5 wt.%, methanol-to-oil ratio 12:1, and time 8 h, and at these operating conditions, biodiesel production efficiencies of 96.28% and 84.05% were obtained for sunflower and waste cooking oils, respectively. The reusability and regeneration of the K compounds/Fe3O4 were studied for five cycles.
引用
收藏
页码:12277 / 12294
页数:18
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