DOI: 10.1016/j.jcou.2018.07.011
Scopus记录号: 2-s2.0-85050613432
论文题名: Conceptual design of a CO2 capture and utilisation process based on calcium and magnesium rich brines
作者: Galvez-Martos J.-L. ; Elhoweris A. ; Morrison J. ; Al-Horr Y.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 27 起始页码: 161
结束页码: 169
语种: 英语
英文关键词: Carbon capture and utilization
; Construction materials
; Desalination brine
; Nesquehonite
Scopus关键词: Building materials
; Calcium carbonate
; Carbon capture
; Carbon dioxide
; Carbon footprint
; Carbonation
; Conceptual design
; Desalination
; Precipitation (chemical)
; Calcium and magnesiums
; Calcium carbonate precipitates
; Cementitious properties
; Magnesium carbonate
; Nesquehonite
; Precipitation systems
; Reaction conditions
; Thermodynamic model
; Brines
英文摘要: Carbon capture and utilisation processes, CCU, are those processes aiming to produce usable products from CO2-based materials. Although there are a large number of CCU alternatives, only a few are able to propose routes for the massive production of marketable CO2 based products with a negative or neutral carbon footprint in the long term. In this work, a conceptual design of a process aimed to produce a cementitious construction material, based on magnesium carbonate trihydrate, also known as nesquehonite, is discussed and experimentally tested. Desalination brines are proposed as the source of aqueous magnesium. However, these brines contain a non-negligible amount of calcium, which interferes in the development of cementitious properties from nesquehonite. In order to avoid this interference, a multi-stage precipitation is proposed, where calcium carbonate precipitates in a first stage, and pure nesquehonite can be obtained in a second stage. A thermodynamic model, based on empirical observations from the precipitation system, is proposed and the technical feasibility of three process alternatives are evaluated against the outcomes from the model. The preferred alternative, from the technical and economic point of view, is to conduct a full absorption of CO2 as aqueous carbonate, which is then split in two streams for both precipitation stages. The advantage of this alternative is the applicability to different types of brines, the probably faster and more economic absorption stage, and the easier control of the reaction conditions, as pH and temperature. © 2018 Published by Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111815
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Gulf Organisation for Research and Development, QSTP, P.O. Box: 210162, Tech 1, Doha, Qatar; Systems Analysis Unit, IMDEA Energy, Móstoles, 28935, Spain; Department of Chemistry, Meston Building, University of Aberdeen, Aberdeen, AB24 3UE, United Kingdom
Recommended Citation:
Galvez-Martos J.-L.,Elhoweris A.,Morrison J.,et al. Conceptual design of a CO2 capture and utilisation process based on calcium and magnesium rich brines[J]. Journal of CO2 Utilization,2018-01-01,27