Study on mechanochemical reaction of silicate minerals and CO2

2015 Fiscal Year Final Research Report

• Project/Area Number: 24656540
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Earth system and resources enginnering
• Research Institution: Nagoya University
• Principal Investigator: Tanaka Tsuyoshi 名古屋大学, 宇宙地球環境研究所, 名誉教授 (00236605)
• Co-Investigator(Renkei-kenkyūsha): MIMURA Koichi 名古屋大学, 大学院環境学研究科, 准教授 (80262848)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: Carbon dioxide / Geochemistry / Peridotite / Mechanochemical reaction / Olivine / Geological sequestration / Gas-chromatograph / Ball mill

Outline of Final Research Achievements

CO2 is found to be adsorbed quickly on mafic silicate minerals by mechanochemical reaction. Varous rocks and minerals were examined for their reactivity with CO2. The silicates were crushed gently in a big ball mill with mixed gas of 10% CO2 and 90% N2. Residual gas was monitored by gas-chromatograph. The 0.03 mol of CO2 in the mill were experimentally found to react in one hour with one mol olivine and/or peridotite. This experiment has done in a separated single type ball mil. If the system will be developed to continuous crushing ball mill system and equipped at near site of certain factory, The CO2 from factory will be able to react with peridotite at that site.

Free Research Field

Geochemistry