Purified Glycerine from Biodiesel Production as Biomass or Waste-Based Green Raw Material for the Production of Biochemicals

Grzegorz Borówka (), Grzegorz Semerjak, Wojciech Krasodomski and Jan Lubowicz
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Grzegorz Borówka: ORLEN Południe S.A., Fabryczna 22, 32-540 Trzebinia, Poland
Grzegorz Semerjak: ORLEN Południe S.A., Fabryczna 22, 32-540 Trzebinia, Poland
Wojciech Krasodomski: Oil and Gas Institute—National Research Institute, 25 A Lubicz Str., 31-503 Kraków, Poland
Jan Lubowicz: Oil and Gas Institute—National Research Institute, 25 A Lubicz Str., 31-503 Kraków, Poland

Energies, 2023, vol. 16, issue 13, 1-12

Abstract: Glycerine (glycerol) is a polyol consisting of three carbon atoms bonded to hydroxyl groups. It is a by-product of the transesterification of triglycerides, such as animal fats, vegetable oils, or used cooking oils during the biodiesel production process. Crude glycerine is subject to purification processes resulting in distilled glycerine containing at least 99.5% glycerol. Currently, produced high-quality distilled glycerine is used in the food, pharmaceutical, and cosmetic industries. Recently, technologies for converting glycerol to other chemicals through catalytic processes have been intensively developed, e.g., production of bio-based 1,2-propanediol. In the near future, glycerol will certainly become a promising renewable raw material in many modern biorefineries for the synthesis of biofuels, chemicals, and bioenergy production. This paper presents the possibility of using ion exchange resins to remove impurities with trace amounts of sulphur and nitrogen compounds from crude and distilled glycerine, produced during the biodiesel production process from used cooking oils. It was determined that using ion exchange resins at the preliminary purification stage (before distillation) was ineffective. Using cationite resins to purify distilled glycerine produced from waste materials enables the removal of impurities in the form of sulphur and nitrogen compounds.

Keywords: glycerine; biodiesel; biofuels; bio-based chemicals; purification of glycerine; used cooking oils; ion exchange resins (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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