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Variation of the Chemical Composition of Waste Cooking Oils upon Bentonite Filtration

Author

Listed:
  • Alberto Mannu

    (Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy
    Leibniz-Institut für Katalyse e. V., Albert-Einstein-Straße 29, 18059 Rostock, Germany)

  • Gina Vlahopoulou

    (Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy
    Leibniz-Institut für Katalyse e. V., Albert-Einstein-Straße 29, 18059 Rostock, Germany)

  • Paolo Urgeghe

    (Dipartimento di Agraria, Università degli Studi di Sassari, Viale Italia, 39, 07100 Sassari, Italy)

  • Monica Ferro

    (Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy)

  • Alessandra Del Caro

    (Dipartimento di Agraria, Università degli Studi di Sassari, Viale Italia, 39, 07100 Sassari, Italy)

  • Alessandro Taras

    (Department of Chemistry and Pharmacy, via Vienna 2, University of Sassari, 07100 Sassari, Italy)

  • Sebastiano Garroni

    (Department of Chemistry and Pharmacy, via Vienna 2, University of Sassari, 07100 Sassari, Italy)

  • Jonathan P. Rourke

    (School of Chemistry, Cardiff University, Park Place, Cardiff CF10 3AT, UK)

  • Roberto Cabizza

    (Dipartimento di Agraria, Università degli Studi di Sassari, Viale Italia, 39, 07100 Sassari, Italy)

  • Giacomo L. Petretto

    (Dipartimento di Agraria, Università degli Studi di Sassari, Viale Italia, 39, 07100 Sassari, Italy
    Department of Chemistry and Pharmacy, via Vienna 2, University of Sassari, 07100 Sassari, Italy)

Abstract

The chemical composition and the color of samples of waste cooking oils (WCOs) were determined prior to and after filtration on two different pads of bentonite differing in particle size. The volatile fraction was monitored by headspace solid-phase microextraction (HS-SPME) coupled with gas-chromatography, while the variation of the composition of the main components was analyzed by 1 H NMR. Both techniques allowed the detection of some decomposition products, such as polymers, terpenes, and derivatives of the Maillard process. The analysis of the chemical composition prior to and after bentonite treatment revealed a tendency for the clays to retain specific chemical groups (such as carboxylic acids or double bonds), independent of their particle size. A pair comparison test was conducted in order to detect the sensory differences of the intensity of aroma between the WCO treated with the two different bentonites. In addition, characterization of the bentonite by means of powder X-ray diffraction (XRD) and thermogravimetric measurements (TG) was performed.

Suggested Citation

  • Alberto Mannu & Gina Vlahopoulou & Paolo Urgeghe & Monica Ferro & Alessandra Del Caro & Alessandro Taras & Sebastiano Garroni & Jonathan P. Rourke & Roberto Cabizza & Giacomo L. Petretto, 2019. "Variation of the Chemical Composition of Waste Cooking Oils upon Bentonite Filtration," Resources, MDPI, vol. 8(2), pages 1-15, June.
    • Handle: RePEc:gam:jresou:v:8:y:2019:i:2:p:108-:d:238681
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    References listed on IDEAS

    as
    1. Singhabhandhu, Ampaitepin & Tezuka, Tetsuo, 2010. "Prospective framework for collection and exploitation of waste cooking oil as feedstock for energy conversion," Energy, Elsevier, vol. 35(4), pages 1839-1847.
    2. Capuano, D. & Costa, M. & Di Fraia, S. & Massarotti, N. & Vanoli, L., 2017. "Direct use of waste vegetable oil in internal combustion engines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 69(C), pages 759-770.
    3. Talebian-Kiakalaieh, Amin & Amin, Nor Aishah Saidina & Mazaheri, Hossein, 2013. "A review on novel processes of biodiesel production from waste cooking oil," Applied Energy, Elsevier, vol. 104(C), pages 683-710.
    4. Massimiliano Borrello & Francesco Caracciolo & Alessia Lombardi & Stefano Pascucci & Luigi Cembalo, 2017. "Consumers’ Perspective on Circular Economy Strategy for Reducing Food Waste," Sustainability, MDPI, vol. 9(1), pages 1-18, January.
    5. Singhabhandhu, Ampaitepin & Tezuka, Tetsuo, 2010. "The waste-to-energy framework for integrated multi-waste utilization: Waste cooking oil, waste lubricating oil, and waste plastics," Energy, Elsevier, vol. 35(6), pages 2544-2551.
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