TY - JOUR
T1 - CO2 fixation using magnesium silicate minerals part 1
T2 - Process description and performance
AU - Fagerlund, Johan
AU - Nduagu, Experience
AU - Romão, Inês
AU - Zevenhoven, Ron
N1 - Funding Information:
This paper is part of an ongoing project called Carbonates in Energy Technology (CARETECH). CARETECH is funded (2008–2011) by the Academy of Finland’s Sustainable Energy programme (SusEn). We also acknowledge KH Renlund foundation for support during the years 2007–2009. Dr. James Highfield of ICES/A*Star, Singapore, is acknowledged for valuable comments.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2012/5
Y1 - 2012/5
N2 - 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. 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 (up to 78% Mg extraction extent achieved so far) and efficiently from different serpentinite minerals from locations worldwide (Finland, Lithuania, Australia, 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 10 min (500°C, 20 bar) for > 300 μm serpentinite-derived Mg(OH)2 particles. Thus the reaction rate achieved so far is much faster than what is currently being considered fast in the field of mineral carbonation.
AB - 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. 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 (up to 78% Mg extraction extent achieved so far) and efficiently from different serpentinite minerals from locations worldwide (Finland, Lithuania, Australia, 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 10 min (500°C, 20 bar) for > 300 μm serpentinite-derived Mg(OH)2 particles. Thus the reaction rate achieved so far is much faster than what is currently being considered fast in the field of mineral carbonation.
KW - Carbon dioxide capture and storage
KW - Gas-solid carbonation
KW - Staged process
UR - http://www.scopus.com/inward/record.url?scp=84859953294&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2011.08.032
DO - 10.1016/j.energy.2011.08.032
M3 - Article
AN - SCOPUS:84859953294
SN - 0360-5442
VL - 41
SP - 184
EP - 191
JO - Energy
JF - Energy
IS - 1
ER -