ESD Ideas: Photoelectrochemical carbon removal as negative emission technology
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Published:2019-01-04
Issue:1
Volume:10
Page:1-7
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ISSN:2190-4987
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Container-title:Earth System Dynamics
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language:en
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Short-container-title:Earth Syst. Dynam.
Author:
May Matthias M.ORCID, Rehfeld KiraORCID
Abstract
Abstract. The pace of the transition to a low-carbon economy – especially in the fuels
sector – is not high enough to achieve the 2 ∘C target limit for
global warming by only cutting emissions. Most political roadmaps to tackle
global warming implicitly rely on the timely availability of mature negative
emission technologies, which actively invest energy to remove CO2 from the
atmosphere and store it permanently. The models used as a basis for
decarbonization policies typically assume an implementation of such
large-scale negative emission technologies starting around the year 2030,
ramped up to cause net negative emissions in the second half of the century
and balancing earlier CO2 release. On average, a contribution of
−10 Gt CO2 yr−1 is expected by 2050
(Anderson and Peters, 2016). A viable approach for
negative emissions should (i) rely on a scalable and sustainable
source of energy (solar), (ii) result in a safely storable product,
(iii) be highly efficient in terms of water and energy use, to
reduce the required land area and competition with water and food demands of
a growing world population, and (iv) feature large-scale feasibility and affordability.
Publisher
Copernicus GmbH
Subject
General Earth and Planetary Sciences
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