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Liquid Lipase-Catalyzed Esterification of Oleic Acid with Methanol for Biodiesel Production in the Presence of Superabsorbent Polymer: Optimization by Using Response Surface Methodology

Author

Listed:
  • Hoang Chinh Nguyen

    () (Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
    These authors contributed equally to this work.)

  • Dinh Thi My Huong

    () (Faculty of Chemical Engineering, University of Technology and Education—The University of Danang, Danang City 550000, Vietnam
    Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
    These authors contributed equally to this work.)

  • Horng-Yi Juan

    () (Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
    These authors contributed equally to this work.)

  • Chia-Hung Su

    () (Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan)

  • Chien-Chung Chien

    () (Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan)

Abstract

Liquid lipase-catalyzed esterification of fatty acids with methanol is a promising process for biodiesel production. However, water by-product from this process favors the reverse reaction, thus reducing the reaction yield. To address this, superabsorbent polymer (SAP) was used as a water-removal agent in the esterification in this study. SAP significantly enhanced the conversion yield compared with the reaction without SAP. The lipase-catalyzed esterification in the presence of SAP was then optimized by response surface methodology to maximize the reaction conversion. A maximum conversion of 96.73% was obtained at a temperature of 35.25 °C, methanol to oleic acid molar ratio of 3.44:1, SAP loading of 10.55%, and enzyme loading of 11.98%. Under these conditions, the Eversa Transform lipase could only be reused once. This study suggests that the liquid lipase-catalyzed esterification of fatty acids using SAP as a water-removal agent is an efficient process for producing biodiesel.

Suggested Citation

  • Hoang Chinh Nguyen & Dinh Thi My Huong & Horng-Yi Juan & Chia-Hung Su & Chien-Chung Chien, 2018. "Liquid Lipase-Catalyzed Esterification of Oleic Acid with Methanol for Biodiesel Production in the Presence of Superabsorbent Polymer: Optimization by Using Response Surface Methodology," Energies, MDPI, Open Access Journal, vol. 11(5), pages 1-12, April.
  • Handle: RePEc:gam:jeners:v:11:y:2018:i:5:p:1085-:d:143693
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    References listed on IDEAS

    as
    1. Su, Chia-Hung, 2013. "Recoverable and reusable hydrochloric acid used as a homogeneous catalyst for biodiesel production," Applied Energy, Elsevier, vol. 104(C), pages 503-509.
    2. repec:gam:jeners:v:11:y:2017:i:1:p:54-:d:124639 is not listed on IDEAS
    3. repec:gam:jeners:v:10:y:2017:i:11:p:1920-:d:119741 is not listed on IDEAS
    4. Yang, Sen & Li, Qing & Gao, Yang & Zheng, Longyu & Liu, Ziduo, 2014. "Biodiesel production from swine manure via housefly larvae (Musca domestica L.)," Renewable Energy, Elsevier, vol. 66(C), pages 222-227.
    5. repec:gam:jeners:v:10:y:2017:i:4:p:546-:d:96038 is not listed on IDEAS
    6. Jeeban Poudel & Malesh Shah & Sujeeta Karki & Sea Cheon Oh, 2017. "Qualitative Analysis of Transesterification of Waste Pig Fat in Supercritical Alcohols," Energies, MDPI, Open Access Journal, vol. 10(3), pages 1-13, February.
    7. repec:gam:jeners:v:11:y:2017:i:1:p:82-:d:124859 is not listed on IDEAS
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    More about this item

    Keywords

    biodiesel; esterification; liquid lipase; superabsorbent polymer; response surface methodology;

    JEL classification:

    • Q - Agricultural and Natural Resource Economics; Environmental and Ecological Economics
    • Q0 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - General
    • Q4 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy
    • Q40 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - General
    • Q41 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Demand and Supply; Prices
    • Q42 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Alternative Energy Sources
    • Q43 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Energy and the Macroeconomy
    • Q47 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Energy Forecasting
    • Q48 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Government Policy
    • Q49 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Other

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