ESD Ideas: Photoelectrochemical carbon  removal as negative emission technology

May, Matthias M.; Rehfeld, Kira

doi:https://doi.org/10.5194/esd-10-1-2019

Articles | Volume 10, issue 1

https://doi.org/10.5194/esd-10-1-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

ESD Ideas

https://doi.org/10.5194/esd-10-1-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 10, issue 1

ESD Ideas

| Highlight paper

|

04 Jan 2019

ESD Ideas | Highlight paper |

| 04 Jan 2019

ESD Ideas: Photoelectrochemical carbon removal as negative emission technology

Matthias M. May and Kira Rehfeld

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Final revised paper (published on 04 Jan 2019)
Preprint (discussion started on 31 Aug 2018)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review and suggestions', Bruce Parkinson, 31 Aug 2018
- AC1: 'Reply to review and suggestions by Bruce Parkinson', Matthias May, 02 Sep 2018
RC2: 'Paper Comments', Anonymous Referee #2, 09 Nov 2018
- AC2: 'Reply to review of Referee #2', Matthias May, 17 Nov 2018
- AC3: 'Manuscript (changes highlighted)', Matthias May, 30 Nov 2018

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (review by editor) (02 Dec 2018) by Ning Zeng

AR by Matthias May on behalf of the Authors (04 Dec 2018) Author's response Manuscript

ED: (07 Dec 2018) by Ning Zeng

ED: Publish as is (17 Dec 2018) by Ning Zeng

AR by Matthias May on behalf of the Authors (17 Dec 2018) Manuscript

Short summary

Current CO₂ emission rates are incompatible with the 2 °C target for global warming. Negative emission technologies are therefore an important basis for climate policy scenarios. We show that photoelectrochemical CO₂ reduction might be a viable, high-efficiency alternative to biomass-based approaches, which reduce competition for arable land. To develop them, chemical reactions have to be optimized for CO₂ removal, which deviates from energetic efficiency optimization in solar fuel applications.