Co-utilization of CO2 and calcium silicate-rich slags for Precipitated calcium carbonate production (Part I)

Sebastian Teir*, Sanni Eloneva, Ron Zevenhoven

*Korresponderande författare för detta arbete

Forskningsoutput: Kapitel i bok/konferenshandlingKonferensbidragVetenskapligPeer review

11 Citeringar (Scopus)

Sammanfattning

A promising option for long-term storage of CO2 is to fixate carbon dioxide as carbonates in minerals. Slag from iron and steel works is a potential raw material for carbonation due to its high content of calcium silicates. Carbonation of calcium silicates produces calcium carbonate (CaCO3), which is used as filler and coating materials in paper. Precipitated calcium carbonate (PCC) is currently produced by carbonating burned lime. If calcium silicate-rich slag materials are used instead of limestone for producing PCC, considerable energy savings and carbon dioxide emissions reductions could be achieved. A suitable process utilizing acetic acid for producing calcium carbonates from calcium silicates was identified. The option for fixating carbon dioxide with calcium silicate-rich slag using acetic acid as reaction intermediate and solvent was investigated using process modeling and laboratory-scale batch experiments. Using this process, 0.24 t of CO2 could theoretically be captured and stored per ton of iron and steel slag products carbonated, while the world-wide CO2 storage potential was estimated to be 62-83 Mt/a. The experiments showed that the calcium in iron and steel slags easily dissolve in acetic acid.

OriginalspråkEngelska
Titel på gästpublikationECOS 2005 - Proceedings of the 18th International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems
RedaktörerGeorge Tsatsaronis, Johan E. Hustad, Truls Gundersen, Audun Rosjorde, Signe Kjelstrup
FörlagTapir Academic Press
Sidor749-756
Antal sidor8
ISBN (elektroniskt)8251920418
StatusPublicerad - 2005
MoE-publikationstypA4 Artikel i en konferenspublikation
Evenemang18th International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2005 - Trondheim, Norge
Varaktighet: 20 jun 200522 jun 2005

Publikationsserier

NamnECOS 2005 - Proceedings of the 18th International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems

Konferens

Konferens18th International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2005
Land/TerritoriumNorge
OrtTrondheim
Period20/06/0522/06/05

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