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    Progress in utilisation of waste cooking oil for sustainable biodiesel and biojet fuel production

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    Authors
    Goh, Brandon Han Hoe
    Chong, Cheng Tung
    Ge, Yu Qi
    Ong, Hwai Chyuan
    Ng, Jo-Han
    Bo, Tian
    Ashokkumar, Veeramuthu
    Lim, Steven
    Seljak, Tine
    Józsa, Viktor
    Affiliation
    Shanghai Jiao Tong University
    University of Malaya
    University of Southampton Malaysia
    University of Derby
    Universiti Tunku Abdul Rahman
    University of Ljubljana
    Budapest University of Technology and Economics
    Issue Date
    2020-08-13
    
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    Abstract
    The increase in human consumption of plant and animal oils has led to the rise in waste cooking oil (WCO) production. Instead of disposing the used cooking oil as waste, recent technological advance has enabled the use of WCO as a sustainable feedstock for biofuels production, thereby maximising the value of biowastes via energy recovery while concomitantly solving the disposal issue. The current regulatory frameworks for WCO collection and recycling practices imposed by major WCO producing countries are reviewed, followed by the overview of the progress in biodiesel conversion techniques, along with novel methods to improve the feasibility for upscaling. The factors which influence the efficiency of the reactions such as properties of feedstock, heterogenous catalytic processes, cost effectiveness and selectivity of reaction product are discussed. Ultrasonic-assisted transesterification is found to be the least energy intensive method for producing biodiesel. The production of bio-jet fuels from WCO, while scarce, provide diversity in waste utilisation if problems such as carbon chain length, requirements of bio-jet fuel properties, extreme reaction conditions and effectiveness of selected catalyst-support system can be solved. Technoeconomic studies revealed that WCO biofuels is financially viable with benefit of mitigating carbon emissions, provided that the price gap between the produced fuel and commercial fuels, sufficient supply of WCO and variation in the oil properties are addressed. This review shows that WCO is a biowaste with high potential for advanced transportation fuel production for ground and aviation industries. The advancement in fuel production technology and relevant policies would accelerate the application of sustainable WCO biofuels.
    Citation
    Goh, B.H.H., Chong, C.T., Ge, Y., Ong, H.C., Ng, J.H., Tian, B., Ashokkumar, V., Lim, S., Seljak, T. and Józsa, V. (2020). 'Progress in utilisation of waste cooking oil for sustainable biodiesel and biojet fuel production'. Energy Conversion and Management, 223, pp. 1-22.
    Publisher
    Elsevier
    Journal
    Energy Conversion and Management
    URI
    http://hdl.handle.net/10545/625108
    DOI
    10.1016/j.enconman.2020.113296
    Additional Links
    https://www.sciencedirect.com/science/article/abs/pii/S0196890420308359
    Type
    Article
    Language
    en
    ISSN
    0196-8904
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.enconman.2020.113296
    Scopus Count
    Collections
    Department of Mechanical Engineering & the Built Environment

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