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A computational algorithm for material and energy balance of a technology for production of geopolymers from fly ash at coal combustion, copper mine tailings and sodium silicate solution is developed. It is applied for determination of utilized wastes, embodied energy and carbon footprint of the products. The initial, critical and equilibrium moisture content of the geopolymers, the drying shrinkage and the energy consumption of the process in industrial conditions are obtained by experimental drying. For energy saving, options for free drying in environmental conditions are discussed. The influence of the shrinkage during the casting of the geopolymer bodies on their design and use in the construction is considered.

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Life Cycle Assessment of Geopolymers Obtained from Bulgarian Industrial Wastes

  • 会议论文

  • 发表日期：

    2025年

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  • Nina Penkova,
  • Andriana Surleva,
  • Kalin Krumov,
  • Darya Ilieva,
  • Petrică Vizureanu,
  • Dumitru Doru Burduhos-Nergiș

摘要

A computational algorithm for material and energy balance of a technology for production of geopolymers from fly ash at coal combustion, copper mine tailings and sodium silicate solution is developed. It is applied for determination of utilized wastes, embodied energy and carbon footprint of the products. The initial, critical and equilibrium moisture content of the geopolymers, the drying shrinkage and the energy consumption of the process in industrial conditions are obtained by experimental drying. For energy saving, options for free drying in environmental conditions are discussed. The influence of the shrinkage during the casting of the geopolymer bodies on their design and use in the construction is considered.