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Inhibitory effect of thyme oil as an antioxidant for waste cooking oil biodiesel crystallization

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  • Gediz Uguz

Abstract

The effects of thyme oil extract as an antioxidant on crystallization properties of waste cooking oil biodiesel were investigated. The inhibitory effect was determined for ASTM D7545 standard method for biodiesel added with 1000, 2000, and 3000 ppm of additives by using oxifast device and compared with the chemical antioxidant butylated hydroxytoluene (BHT). Inhibition time data were determined by converting the oxidation stability analysis results. The crystallization temperatures (T cr ) of the samples were determined by using a Differential Scanning Calorimetry (DSC) technique. T cr values of samples with antioxidants were decreased compared to the non-antioxidant biodiesel sample (B100). The order of antioxidant power was B100

Suggested Citation

  • Gediz Uguz, 2023. "Inhibitory effect of thyme oil as an antioxidant for waste cooking oil biodiesel crystallization," Energy & Environment, , vol. 34(1), pages 176-192, February.
    • Handle: RePEc:sae:engenv:v:34:y:2023:i:1:p:176-192
    DOI: 10.1177/0958305X211061346
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