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@ARTICLE{Ostovari:904190,
author = {Ostovari, Hesam and Müller, Leonard and Skocek, Jan and
Bardow, André},
title = {{F}rom {U}navoidable {CO} 2 {S}ource to {CO} 2 {S}ink? {A}
{C}ement {I}ndustry {B}ased on {CO} 2 {M}ineralization},
journal = {Environmental science $\&$ technology},
volume = {55},
number = {8},
issn = {0013-936X},
address = {Columbus, Ohio},
publisher = {American Chemical Society},
reportid = {FZJ-2021-05760},
pages = {5212 - 5223},
year = {2021},
abstract = {The cement industry emits $7\%$ of the global anthropogenic
greenhouse gas (GHG) emissions. Reducing the GHG emissions
of the cement industry is challenging since cement
production stoichiometrically generates CO2 during
calcination of limestone. In this work, we propose a pathway
towards a carbon-neutral cement industry using CO2
mineralization. CO2 mineralization converts CO2 into a
thermodynamically stable solid and byproducts that can
potentially substitute cement. Hence, CO2 mineralization
could reduce the carbon footprint of the cement industry via
two mechanisms: (1) capturing and storing CO2 from the flue
gas of the cement plant, and (2) reducing clinker usage by
substituting cement. However, CO2 mineralization also
generates GHG emissions due to the energy required for
overcoming the slow reaction kinetics. We, therefore,
analyze the carbon footprint of the combined CO2
mineralization and cement production based on life cycle
assessment. Our results show that combined CO2
mineralization and cement production using today’s energy
mix could reduce the carbon footprint of the cement industry
by $44\%$ or even up to $85\%$ considering the theoretical
potential. Low-carbon energy or higher blending of
mineralization products in cement could enable production of
carbon-neutral blended cement. With direct air capture, the
blended cement could even become carbon-negative. Thus, our
results suggest that developing processes and products for
combined CO2 mineralization and cement production could
transform the cement industry from an unavoidable CO2 source
to a CO2 sink.},
cin = {IEK-10},
ddc = {333.7},
cid = {I:(DE-Juel1)IEK-10-20170217},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33735574},
UT = {WOS:000643546400100},
doi = {10.1021/acs.est.0c07599},
url = {https://juser.fz-juelich.de/record/904190},
}