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Biodiesel production from waste cooking oil using calcium oxide derived from scallop shell waste

CLEAN ENERGY 2024年第2期8卷 113-126页

作者： Puspitasari, Poppy Pramono, Diki Dwi Fiansyah, Davi Nur Permanasari, Avita Ayu Mufti, Nandang Abd Razak, Jeefferie Univ Negeri Malang Dept Mech & Ind Engn Malang Indonesia Univ Negeri Malang Ctr Adv Mat & Renewable Energy Malang Indonesia Univ Negeri Malang Fac Math & Nat Sci Dept Phys Malang Indonesia Univ Teknikal Malaysia Melaka Fak Kejuruteraan Pembuatan Melaka Malaysia

Biodiesel is one of the alternative forms of diesel fuel and can be obtained using the transesterification process of waste cooking oil with a catalyst to accelerate the reaction. The heterogeneous catalyst from waste scallop shells is used due to its potential for being reused in the subsequent transesterification reactions. Heterogeneous catalysts can also be recycled, contributing to their environmentally friendly nature. This study aims to identify the performance of recycling a calcium oxide (cao) catalyst from scallop shell waste on synthesis biodiesel. The method used is the transesterification method with the basic ingredients of waste cooking oil using a cao catalyst. Then, after the transesterification process is complete, the catalyst is separated from the biodiesel and recycled to be reused in the transesterification process up to five times. The biodiesel samples obtained are identified for yield value, physico-chemical properties, thermal properties and performance. X-ray diffraction characterization results for the cao catalyst show that it has a crystal size of 67.83 nm. Scanning electron microscope characterization shows that it has spherical particle shapes. Fourier transform infrared characterization shows the presence of Ca-O bonds. The highest biodiesel yield value of 74.23% is obtained in biodiesel Cycle 1. The flash point value of biodiesel samples ranges from 141.2 degrees C to 149 degrees C. Further, all of the biodiesel samples exhibit a cetane number of 75. The highest lower heating value of 38.22 MJ/kg is obtained in biodiesel Cycle 1 and the viscosity of the biodiesel samples ranges from 5.65 to 5.88 cSt. The density of the biodiesel samples ranges from 881.23 to 882.92 kg/m3. Besides, ester functional groups (C=O) and methyl functional groups have been successfully formed in all samples, with the methyl oleate compound observed as dominating the biodiesel samples. The cloud point value of the biodiesel samples ranges from 12 degrees C t

关键词： biodiesel cao catalyst waste cooking oil scallop shell DUTY DIESEL-ENGINE EMISSION CHARACTERISTICS HETEROGENEOUS catalyst PERFORMANCE COMBUSTION NANOPARTICLES BLENDS PALM OPTIMIZATION EXTRACTION

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