DOI: 10.1016/j.jcou.2016.09.005
Scopus记录号: 2-s2.0-84988919752
论文题名: On the potential use of quarry waste material for CO2 sequestration
作者: Rigopoulos I. ; Petallidou K.C. ; Vasiliades M.A. ; Delimitis A. ; Ioannou I. ; Efstathiou A.M. ; Kyratsi T.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2016
卷: 16 起始页码: 361
结束页码: 370
语种: 英语
英文关键词: Augite nanocrystals
; Ball milling
; CO2 chemisorption
; Mineral carbonation
; Quarry waste
Scopus关键词: Ball milling
; Carbon
; Carbonation
; Chemisorption
; Feedstocks
; Milling (machining)
; Minerals
; Nanocrystals
; Particle size
; Quarries
; Silicate minerals
; Silicates
; Temperature programmed desorption
; Adsorption capacities
; Ball milling process
; Carbon sequestration
; Experimental procedure
; Milling conditions
; Mineral carbonation
; Process control agents
; Structural disordering
; Carbon dioxide
英文摘要: The use of solid wastes rich in Ca2+, Mg2+ and Fe2+ for the ex situ sequestration of CO2 could provide an economically and technologically viable option for the reduction of anthropogenic CO2 emissions. Here, we investigate for the first time the potential use of waste materials from mafic rock quarries as a feedstock for the sequestration of CO2 by ex situ mineral carbonation. The experimental procedure was performed on a waste material from a dolerite quarry operating in the Troodos ophiolite (Cyprus). The ball milling process was applied to this quarry waste in order to create nanomaterials with enhanced CO2 adsorption capacity. Through CO2 chemisorption followed by temperature-programmed desorption (CO2-TPD) experiments, the optimum ball milling conditions were found (20 h of wet ball milling with 50 wt% ethanol as process control agent), leading to an enhancement of the CO2-storage capacity of the waste material by a factor of ∼120. This enhancement of CO2 uptake is closely related to (i) the reduction of particle size to the nanoscale, (ii) the structural disordering of the constituent silicate minerals, and (iii) the presence of augite nanocrystals after ball milling. The experimental results suggest that waste materials from dolerite quarries may indeed be used as feedstock for the ex situ mineralization of CO2. They also strongly demonstrate that ball milling is a very promising technique for optimizing the ex situ carbonation of this waste material; thus the proposed methodology could be a fundamental part of a future carbon sequestration strategy. © 2016 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52881
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Rigopoulos I.,Petallidou K.C.,Vasiliades M.A.,et al. On the potential use of quarry waste material for CO2 sequestration[J]. Journal of CO2 Utilization,2016-01-01,16