Potential for Mineral Carbonation of CO2 in Pleistocene Basaltic Rocks in Volos Region (Central Greece)

Minerals

Nikolaos Koukouzas¹  Christos Karkalis¹  Pavlos Tyrologou¹  Apostolos Arvanitis²  Petros Koutsovitis³ 

[1] Centre for Research and Technology, 15125 Hellas (CERTH), Greece;Hellenic Survey of Geology and Mineral Exploration (HSGME), 13677 Attica, Greece;Section of Earth Materials, Department of Geology, University of Patras, GR-265 00 Patras, Greece;

关键词: basalts;    carbonation;    co₂ storage;    hydrochemistry;    regional heat flow;   

DOI  :  10.3390/min9100627

来源: DOAJ

【 摘 要 】

Pleistocene alkaline basaltic lavas crop out in the region of Volos at the localities of Microthives and Porphyrio. Results from detailed petrographic study show porphyritic textures with varying porosity between 15% and 23%. Data from deep and shallow water samples were analysed and belong to the Ca-Mg-Na-HCO₃-Cl and the Ca-Mg-HCO₃ hydrochemical types. Irrigation wells have provided groundwater temperatures reaching up to ~30 °C. Water samples obtained from depths ranging between 170 and 250 m. The enhanced temperature of the groundwater is provided by a recent-inactive magmatic heating source. Comparable temperatures are also recorded in adjacent regions in which basalts of similar composition and age crop out. Estimations based on our findings indicate that basaltic rocks from the region of Volos have the appropriate physicochemical properties for the implementation of a financially feasible CO₂ capture and storage scenario. Their silica-undersaturated alkaline composition, the abundance of Ca-bearing minerals, low alteration grade, and high porosity provide significant advantages for CO₂ mineral carbonation. Preliminary calculations suggest that potential pilot projects at the Microthives and Porphyrio basaltic formations can store 64,800 and 21,600 tons of CO₂, respectively.

【 授权许可】

Unknown