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@ARTICLE{Deutz:904183,
author = {Deutz, Sarah and Bardow, André},
title = {{L}ife-cycle assessment of an industrial direct air capture
process based on temperature–vacuum swing adsorption},
journal = {Nature energy},
volume = {6},
number = {2},
issn = {2058-7546},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2021-05753},
pages = {203 - 213},
year = {2021},
abstract = {Current climate targets require negative carbon dioxide
(CO2) emissions. Direct air capture is a promising negative
emission technology, but energy and material demands lead to
trade-offs with indirect emissions and other environmental
impacts. Here, we show by life-cycle assessment that the
commercial direct air capture plants in Hinwil and
Hellisheiði operated by Climeworks can already achieve
negative emissions today, with carbon capture efficiencies
of $85.4\%$ and $93.1\%.$ The climate benefits of direct air
capture, however, depend strongly on the energy source. When
using low-carbon energy, as in Hellisheiði, adsorbent
choice and plant construction become more important,
inducing up to 45 and 15 gCO2e per kilogram CO2 captured,
respectively. Large-scale deployment of direct air capture
for $1\%$ of the global annual CO2 emissions would not be
limited by material and energy availability. However, the
current small-scale production of amines for the adsorbent
would need to be scaled up by more than an order of
magnitude. Other environmental impacts would increase by
less than $0.057\%$ when using wind power and by up to
$0.30\%$ for the global electricity mix forecasted for 2050.
Energy source and efficiency are essential for direct air
capture to enable both negative emissions and low-carbon
fuels.},
cin = {IEK-10},
ddc = {330},
cid = {I:(DE-Juel1)IEK-10-20170217},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000614670900001},
doi = {10.1038/s41560-020-00771-9},
url = {https://juser.fz-juelich.de/record/904183},
}