TY - JOUR
T1 - Sequestering CO 2 by Mineralization into Useful Nesquehonite-Based Products
AU - Glasser, Fredrik Paul
AU - Jauffret, Guillaume
AU - Morrison, Jennie
AU - Galvez-Martos, Jose Luis
AU - Patterson, Naomi
AU - Imbabi, Mohammed Salah Eldin
N1 - Publisher Copyright:
© 2016 Glasser, Jauffret, Morrison, Galvez-Martos, Patterson and Imbab.
PY - 2016
Y1 - 2016
N2 - The precipitation of magnesium hydroxy-carbonate hydrates has been suggested as a route to sequester CO2 into solids. We report the development of self-cementing compositions based on nesquehonite, MgCO 3 · 3 H 2 O, that are made from CO 2 -containing gas streams, the CO 2 being separated from other gases by its high solubility in alkaline water, while magnesium is typically provided by waste desalination brines. Precipitation conditions are adjusted to optimize the formation of nesquehonite and the crystalline solid can readily be washed free of chloride. Products can be prepared to achieve self-cementation following two routes: (i) thermal activation of the nesquehonite then rehydration of the precursor or (ii) direct curing of a slurry of nesquehonite. The products thus obtained contain ~30 wt% CO 2 and could form the basis for a new generation of lightweight, thermally insulating boards, blocks, and panels, with sufficient strength for general construction.
AB - The precipitation of magnesium hydroxy-carbonate hydrates has been suggested as a route to sequester CO2 into solids. We report the development of self-cementing compositions based on nesquehonite, MgCO 3 · 3 H 2 O, that are made from CO 2 -containing gas streams, the CO 2 being separated from other gases by its high solubility in alkaline water, while magnesium is typically provided by waste desalination brines. Precipitation conditions are adjusted to optimize the formation of nesquehonite and the crystalline solid can readily be washed free of chloride. Products can be prepared to achieve self-cementation following two routes: (i) thermal activation of the nesquehonite then rehydration of the precursor or (ii) direct curing of a slurry of nesquehonite. The products thus obtained contain ~30 wt% CO 2 and could form the basis for a new generation of lightweight, thermally insulating boards, blocks, and panels, with sufficient strength for general construction.
KW - CO sequestration
KW - Construction products
KW - Desalination brines
KW - Magnesium carbonates
KW - Mineralization
UR - https://www.scopus.com/pages/publications/85021399004
U2 - 10.3389/fenrg.2016.00003
DO - 10.3389/fenrg.2016.00003
M3 - Article
AN - SCOPUS:85021399004
SN - 2296-598X
VL - 4
JO - Frontiers in Energy Research
JF - Frontiers in Energy Research
IS - FEB
M1 - 3
ER -
