On the potential use of quarry waste material for CO2 sequestration

作者: Ioannis Rigopoulos , Klito C. Petallidou , Michalis A. Vasiliades , Andreas Delimitis , Ioannis Ioannou

DOI: 10.1016/J.JCOU.2016.09.005

关键词: Ball millMaterials scienceDesorptionSilicate mineralsCarbon sequestrationRaw materialCarbonationMetallurgyParticle sizeMineralogyMineralization (geology)

摘要: Abstract The use of solid wastes rich in Ca2+, Mg2+ and Fe2+ for the ex situ sequestration CO2 could provide an economically technologically viable option reduction anthropogenic emissions. Here, we investigate first time potential waste materials from mafic rock quarries as a feedstock by mineral carbonation. experimental procedure was performed on material dolerite quarry operating Troodos ophiolite (Cyprus). ball milling process applied to this order create nanomaterials with enhanced adsorption capacity. Through chemisorption followed temperature-programmed desorption (CO2-TPD) experiments, optimum conditions were found (20 h wet 50 wt% ethanol control agent), leading enhancement CO2-storage capacity factor ∼120. This uptake is closely related (i) particle size nanoscale, (ii) structural disordering constituent silicate minerals, (iii) presence augite nanocrystals after milling. results suggest that may indeed be used mineralization CO2. They also strongly demonstrate very promising technique optimizing carbonation material; thus proposed methodology fundamental part future carbon strategy.

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