TY - JOUR
T1 - Production of precipitated calcium carbonate from calcium silicates and carbon dioxide
AU - Teir, Sebastian
AU - Eloneva, Sanni
AU - Zevenhoven, Ron
N1 - Funding Information:
This work was supported by the Nordic Energy Research Programme, the National Technology Agency of Finland (TEKES) and the Finnish Recovery Boiler Committee. Kjell Dahlberg at Nordkalk Finland is also acknowledged for providing information and reviewing this article.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005/11
Y1 - 2005/11
N2 - The possibilities for reducing carbon dioxide emissions from the pulp and paper industry by calcium carbonation are presented. The current precipitated calcium carbonate (PCC) production uses mined, crushed calcium carbonate as raw materials. If calcium silicates were used instead, carbon dioxide emissions from the calcination of carbonates would be eliminated. In Finland, there could, thus, be a potential for eliminating 200 kt of carbon dioxide emissions per year, considering only the PCC used in the pulp and paper industry. A preliminary investigation of the feasibility to produce PCC from calcium silicates and the potential to replace calcium carbonate as the raw material was made. Calcium carbonate can be manufactured from calcium silicates by various methods, but only a few have been experimentally verified. The possibility and feasibility of these methods as a replacement for the current PCC production process was studied by thermodynamic equilibrium calculations using HSC software and process modelling using Aspen Plus®. The results from the process modelling showed that a process that uses acetic acid for extraction of the calcium ions is a high potential option for sequestering carbon dioxide by mineral carbonation. The main obstacle seems to be the limited availability and relatively high price of wollastonite, which is a mineral with high calcium silicate content. An alternative is to use the more common, but also more complex, basalt rock instead.
AB - The possibilities for reducing carbon dioxide emissions from the pulp and paper industry by calcium carbonation are presented. The current precipitated calcium carbonate (PCC) production uses mined, crushed calcium carbonate as raw materials. If calcium silicates were used instead, carbon dioxide emissions from the calcination of carbonates would be eliminated. In Finland, there could, thus, be a potential for eliminating 200 kt of carbon dioxide emissions per year, considering only the PCC used in the pulp and paper industry. A preliminary investigation of the feasibility to produce PCC from calcium silicates and the potential to replace calcium carbonate as the raw material was made. Calcium carbonate can be manufactured from calcium silicates by various methods, but only a few have been experimentally verified. The possibility and feasibility of these methods as a replacement for the current PCC production process was studied by thermodynamic equilibrium calculations using HSC software and process modelling using Aspen Plus®. The results from the process modelling showed that a process that uses acetic acid for extraction of the calcium ions is a high potential option for sequestering carbon dioxide by mineral carbonation. The main obstacle seems to be the limited availability and relatively high price of wollastonite, which is a mineral with high calcium silicate content. An alternative is to use the more common, but also more complex, basalt rock instead.
KW - Calcium carbonate
KW - Calcium silicate
KW - Carbon dioxide
KW - Carbonation
KW - PCC
KW - Utilization
UR - http://www.scopus.com/inward/record.url?scp=19844368797&partnerID=8YFLogxK
U2 - 10.1016/j.enconman.2005.02.009
DO - 10.1016/j.enconman.2005.02.009
M3 - Article
AN - SCOPUS:19844368797
SN - 0196-8904
VL - 46
SP - 2954
EP - 2979
JO - Energy Conversion and Management
JF - Energy Conversion and Management
IS - 18-19
ER -