Utilization of eggshell waste as low-cost solid base catalyst for biodiesel production from used cooking oil

7th International Conference on Environment and Industrial Innovation

生态环境科学;工业技术

Asri, N.P.^1 ; Podjojono, B.^1 ; Fujiani, R.^1 ; Nuraini^1

Chemical Engineering Department, Faculty of Engineering, WR. Supratman University, Surabaya

601191, Indonesia^1

关键词: Batch type reactor;    Biodiesel production;    Magnetic stirrers;    Reaction temperature;    Reflux condensers;    Solid base catalysts;    Tranesterification;    Used cooking oil;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/67/1/012021/pdf
DOI  :  10.1088/1755-1315/67/1/012021

来源: IOP

【 摘 要 】

A solid CaO-based catalyst of waste eggshell was developed for biodiesel production from used cooking oil. The waste eggshell powder was calcined in air at 90° C for 4 h to convert calcium species in the eggshells into active CaO catalysts. The characterization of CaO catalyst was done by XRD and BET analysis. The CaO catalyst was then introduced for transesterification of used cooking oil (UCO) for testing of its catalytic activity. The experiment was conducted in batch type reactor that consists of three-neck glass equipped by reflux condenser and magnetic stirrer. Before tranesterification process, the UCO was treated by coconut coir powder in order to reduce the free fatty acid content. The result showed that the catalyst was potentially use for transesterification of used cooking oil into biodiesel with relatively high yield of 75.92% was achieved at reaction temperature, reaction time, molar ratio UCO to methanol and catalyst amount of 65° C, 7 h, 1:15 and 6%, respectively.