Umeå University's logo

umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Fate of trace elements in Oxygen Carrier Aided Combustion (OCAC) of municipal solid waste
Department of Space, Earth and Environment, Division of Energy Technology, Chalmers University of Technology, Gothenburg, Sweden.
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
Department of Industrial and Materials Science, Chalmers University of Technology, Gothenburg, Sweden.
Department of Space, Earth and Environment, Division of Energy Technology, Chalmers University of Technology, Gothenburg, Sweden.
Show others and affiliations
2022 (English)In: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 311, article id 122551Article in journal (Refereed) Published
Abstract [en]

Oxygen Carrier Aided Combustion is a novel fluidized bed concept for burning waste. This study analyzed solid samples from an industrial OCAC application using municipal solid waste and the oxygen carrier ilmenite. The presence of oxygen carriers impacts the ash chemistry, which can influence corrosion and ash characteristics. By investigating samples obtained from industrial applications, unique and highly relevant information on the solid-state chemistry and the fate of important elements can be obtained. In total, 20 bottom ashes and 17 fly ashes were sampled over a period of 38 days. In a preceding study, the surface interaction between ilmenite and Zn, Cu and Pb was investigated. In this paper, the distribution of these elements throughout the particle cross-section and the influence of residence time has been studied using XRD, SEM-EDX and XPS. The results show that Zn is incorporated in the Fe-rich ash layer over time in the form of Zn ferrites, while Cu accumulates inside the ilmenite particles with time, and Cr is enriched in the magnetically separated bottom ash. Low concentrations of Pb were detected in the bottom ashes, suggesting that a significant part is released in the gas phase. The influence of temperature, bed material and reduction potential were evaluated using multicomponent, multiphase equilibrium calculations. It is shown that an ilmenite bed is less prone to form melts in comparison to a bed of silica sand and that the addition of sulfur could decrease the volatilization of Pb.

Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 311, article id 122551
Keywords [en]
Ilmenite, Municipal solid waste (MSW), Oxygen carrier, Oxygen Carrier Aided Combustion (OCAC), Thermodynamic equilibrium calculation, X-Ray Photoelectron Spectroscopy (XPS)
National Category
Energy Engineering Bioenergy
Identifiers
URN: urn:nbn:se:umu:diva-190152DOI: 10.1016/j.fuel.2021.122551ISI: 000743091500006Scopus ID: 2-s2.0-85120371869OAI: oai:DiVA.org:umu-190152DiVA, id: diva2:1617645
Funder
Swedish Research Council Formas, 2017-01095Swedish Energy Agency, 46450-1Available from: 2021-12-07 Created: 2021-12-07 Last updated: 2022-03-01Bibliographically approved

Open Access in DiVA

fulltext(9869 kB)126 downloads
File information
File name FULLTEXT01.pdfFile size 9869 kBChecksum SHA-512
1bbcfb5dac07cd011499a193792844ba9b71d66f77205541da6102db49deddd3dbd955f275d42f7000761ac1f1731673bbf917211c0fc18d173539518b2af64d
Type fulltextMimetype application/pdf

Other links

Publisher's full textScopus

Authority records

Backman, Rainer

Search in DiVA

By author/editor
Backman, Rainer
By organisation
Department of Applied Physics and Electronics
In the same journal
Fuel
Energy EngineeringBioenergy

Search outside of DiVA

GoogleGoogle Scholar
Total: 126 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 160 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf