Interactions between Automotive Shredder Residue and Olivine Bed Material during Indirect Fluidized Bed Gasification
Journal article, 2021

Thermal conversion of automotive shredder residue (ASR) using indirect fluidized bed gasification was conducted in the Chalmers semi-industrial 2-4-MWth gasifier. The bed material consisted of olivine that was activated through the deposition of biomass ash prior to a 13-day exposure to ASR. The interactions between the bed material and the ASR ash were investigated using XRD, SEM-EDS, and thermodynamic modeling. The deposition of iron (Fe) onto the olivine particles was noted, and this is likely to increase the oxygen-carrying ability of the particles. Furthermore, at the end of the campaign, about one-third of the particles in the bed were found to originate from the ASR ash. These particles were rich in Fe and Si, as well as elements found exclusively in the ASR ash, such as Zn, Ti, and Cu. Some of these particles exhibited a hollow morphology, suggesting a melt state during their formation in the gasifier. In addition, a low level of agglomeration of the ash and olivine particles was detected. Thermodynamic modeling with the FactSage software indicated the formation of slag. This study presents a detailed investigation of the interactions that occur between the bed material and an ash-rich fuel such as ASR. The findings may have applications in demonstrating the induction of oxygen-carrying ability in bed materials or for metal recycling through the separation of ash particles from the bed material.


Robin Faust

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

Panida Aonsamang

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Applied Surface Chemistry

Jelena Maric

Akademiska Hus

Alyona Tormachen

Student at Chalmers

Martin Seemann

Chalmers, Space, Earth and Environment, Energy Technology

Pavleta Knutsson

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

Energy & Fuels

0887-0624 (ISSN) 1520-5029 (eISSN)

Vol. 35 19 15935-15949

Syrebärarstödd förbränning med kontrollerade materialflöden för att uppnå högre grad av bränslestabilitet i fluidbäddspannor möjliggöra framtidens koldioxidfångning och lagring (BECCS)

Swedish Energy Agency (50450-1), 2020-11-01 -- 2023-12-31.

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Other Materials Engineering

Metallurgy and Metallic Materials



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