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Pre-Treatment Equipment for Processing Grape Marc into Valorised By-Products: A Review

Author

Listed:
  • Stepan Akterian

    (Process Engineering for Food and Aromatic Products, University of Food Technologies, 4002 Plovdiv, Bulgaria)

  • Kostadin Fikiin

    (Faculty of Power Engineering and Power Machines, Technical University of Sofia, 1000 Sofia, Bulgaria)

  • Georgi Georgiev

    (Ecobiotechproduct, 9000 Varna, Bulgaria)

  • Angel Terziev

    (Faculty of Power Engineering and Power Machines, Technical University of Sofia, 1000 Sofia, Bulgaria)

Abstract

While traditional disposal of solid waste from the global wine industry causes significant environmental burden and hazards, a range of value-added by-products can be produced from the grape marc. This review focuses therefore on crucial sustainability-enhancing technologies for pomace dewatering and separation, which constitute a mandatory stage in obtaining storage-stable by-products and final value-added commodities. A number of dryers and separators were considered for pre-treatment of wet grape marc and analysed in terms of their design characteristics, functionality, feasibility, throughput and efficiency. A multi-criteria decision analysis was carried out to compare, rank and select the equipment which is most suitable for the purpose. It was found out that the rotary drum dryer and the drum screen separator with internal blade rotor are the best candidates to fulfil the technology requirements, while the flowsheet that includes an initial separation followed by drying of the resulting fractions is a rather attractive option. Valorising grape waste worldwide contributes substantially to achieving the United Nations Sustainable Development Goals for responsible consumption and production, mitigating climate change, caring for health and well-being, preserving land life and combating hunger.

Suggested Citation

  • Stepan Akterian & Kostadin Fikiin & Georgi Georgiev & Angel Terziev, 2025. "Pre-Treatment Equipment for Processing Grape Marc into Valorised By-Products: A Review," Sustainability, MDPI, vol. 17(13), pages 1-18, July.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:13:p:6188-:d:1695665
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    References listed on IDEAS

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    1. Georgiana-Diana Gabur & Carmen Teodosiu & Daniela Fighir & Valeriu V. Cotea & Iulian Gabur, 2024. "From Waste to Value in Circular Economy: Valorizing Grape Pomace Waste through Vermicomposting," Agriculture, MDPI, vol. 14(9), pages 1-20, September.
    2. Daniele Basso & Elsa Weiss-Hortala & Francesco Patuzzi & Marco Baratieri & Luca Fiori, 2018. "In Deep Analysis on the Behavior of Grape Marc Constituents during Hydrothermal Carbonization," Energies, MDPI, vol. 11(6), pages 1-19, May.
    3. Giusy Rita Caponio & Fabio Minervini & Grazia Tamma & Giuseppe Gambacorta & Maria De Angelis, 2023. "Promising Application of Grape Pomace and Its Agri-Food Valorization: Source of Bioactive Molecules with Beneficial Effects," Sustainability, MDPI, vol. 15(11), pages 1-26, June.
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