CO2 fixation using magnesium silicate minerals Part 1: Process description and performance

Johan Fagerlund*, Experience Nduagu, Inês Romaoãc, Ron Zevenhoven

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedingConference contributionScientificpeer-review

9 Citations (Scopus)

Abstract

This paper describes a staged carbonation process for magnesium silicate mineral carbonation. This carbon dioxide capture and storage (CCS) alternative involves the production of magnesium hydroxide, followed by its carbonation in a pressurised fluidised bed (PFB) reactor that is operated at temperatures and pressures so far up to 873 K, 4.5 MPa. The goal is to utilise the heat of the carbonation reaction to drive the Mg(OH)2 production step. The results show that Mg(OH)2 can be produced successfully and efficiently from different serpentinite minerals from locations worldwide (Finland, Lithuania, Australia and Portugal). From the extraction step, ammonium sulphate is recovered while iron oxides (from the mineral) are obtained as by-products. The carbonation step, while still being developed, resulted in >50 %-wt conversion in 15 minutes (773 K, 2 MPa) for > 300 urn serpentinite derived Mg(OH)2 particles.

Original languageEnglish
Title of host publicationPower Plants and Industrial Processes
PublisherÅbo Akademi University
Pages67-75
Number of pages9
ISBN (Print)9781456303181
Publication statusPublished - 2010
MoE publication typeA4 Article in a conference publication
Event23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010 - Lausanne, Switzerland
Duration: 14 Jun 201017 Jun 2010

Publication series

NameProceedings of the 23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010
Volume4

Conference

Conference23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010
Country/TerritorySwitzerland
CityLausanne
Period14/06/1017/06/10

Keywords

  • carbon dioxide capture and storage
  • Gas-solid carbonation
  • Staged process

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