Energy recovery from plastic and biomass waste by means of fluidized bed gasification: A life cycle inventory model

Filomena Ardolino, Concetta Lodato, Thomas Fruergaard Astrup, Umberto Arena*

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review

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    Abstract

    The study provides for the first time a life cycle inventory model for the fluidized bed gasification of wastes, based on a large amount of high-quality data. All of them have been obtained from a pilot scale fluidized bed gasifier, fed with ten types of waste and biomass, under a wide range of operating conditions. The model refers to commercial scale gasifiers having a “thermal configuration”, where the generated syngas is immediately burned downstream of the reactor. Key relationships between process- and waste-specific parameters have been defined. The model quantifies the main inputs and outputs of the gasification process (emissions, energy recovery, ash disposal, resource consumptions), providing high-quality data that could contribute to improve life cycle assessment modelling of waste gasification. Finally, some case studies have been implemented in the EASETECH software to illustrate the model applicability, evaluate the role of main parameters, and compare the environmental performances of gasification power units with that of the European electricity mix. The performances appear highly affected by metal contents in the waste-derived fuels, while the model results to a limited extent are sensitive to the equivalence ratio and the net electrical efficiency of the energy conversion.
    Original languageEnglish
    JournalEnergy
    Issue numberPart B
    Pages (from-to)299-314
    ISSN0360-5442
    DOIs
    Publication statusPublished - 2018

    Keywords

    • Gasification
    • Life cycle assessment
    • EASETECH
    • Fluidized beds
    • Plastic waste
    • Industrial biomass

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