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Quantitative of Mass Transfer in Liquid-Liquid Operations of Oil-Alcohol-Glycerin Systems

In: Alternative Energies and Efficiency Evaluation

Author

Listed:
  • Cesar A.M. Abreu
  • Benjamim H.L. Silva

Abstract

The effects of mass transfer were quantified for the effective performance of mixtures between partially miscible phases, or for the promotion of their separations. To consolidate the analysis of heterogeneous liquid-liquid processes, variations in the composition of the liquid phases over the evolution of contact operations were considered, detailing the physical mechanisms involved in the mixtures of oil (soy, sunflower) and alcohol (methanol, ethanol), and in the separation between biodiesel and glycerin. Based on experimental evaluations, the average distribution coefficients for triglycerides (oil-alcohol) and glycerol (biodiesel-glycerin) were estimated at 1.31 and 1.46, and 3.42 × 10-2 and 4.06 × 10-2, for soybean and sunflower, respectively, while their mass transfer coefficients, depending on their concentration ranges in the phase, varied in orders of magnitude from 10-2 s-1 to 10-4 s-1. Including the values of the physical parameters, a heterogeneous model for the alkaline transesterification of soybean oil (methanol, ethanol, NaOH, 25°C, 40°C, 60°C, 600 rpm) was validated.

Suggested Citation

  • Cesar A.M. Abreu & Benjamim H.L. Silva, 2022. "Quantitative of Mass Transfer in Liquid-Liquid Operations of Oil-Alcohol-Glycerin Systems," Chapters, in: Muhammad Wakil Shahzad & Muhammad Sultan & Laurent Dala & Ben Bin Xu & Muhammad Ahmad Jamil & Nida I (ed.), Alternative Energies and Efficiency Evaluation, IntechOpen.
    • Handle: RePEc:ito:pchaps:237904
    DOI: 10.5772/intechopen.98926
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    More about this item

    Keywords

    Mass transfer; liquid-liquid; vegetable oil; biodiesel; glycerin;
    All these keywords.

    JEL classification:

    • Q40 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - General

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