Overlooked source of hydrogen: The environmental potential of chlor-alkali by-product
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F23%3A43927444" target="_blank" >RIV/60461373:22320/23:43927444 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.ijhydene.2023.10.246" target="_blank" >https://doi.org/10.1016/j.ijhydene.2023.10.246</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijhydene.2023.10.246" target="_blank" >10.1016/j.ijhydene.2023.10.246</a>
Alternative languages
Result language
angličtina
Original language name
Overlooked source of hydrogen: The environmental potential of chlor-alkali by-product
Original language description
Hydrogen created as a by-product of chlor-alkali electrolysis is the second largest contributor to total hydrogen production in Europe. Nevertheless, it is commonly overlooked in hydrogen production pathway classifications. This study applies life-cycle assessment to shed light on the environmental impacts of chlor-alkali hydrogen based on diverse production and methodological aspects, and compares the most appropriate utilization scenarios in terms of GHG savings. The results demonstrate a broad range of carbon footprint from 0.01 to 7.14 kg CO2 eq./kg with a high dependance on consumed energy sources and adopted allocation method. When analyzing the scenarios of utilization, the most favorable scenario in terms of potential savings is the substitution of high-emission grey hydrogen. According to our results, chlor-alkali hydrogen could be considered renewable or low-emission following the standards set by the EU, and thus can facilitate the transition to carbon neutrality.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Hydrogen Energy
ISSN
0360-3199
e-ISSN
1879-3487
Volume of the periodical
Neuveden
Issue of the periodical within the volume
49, part C
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
1437-1443
UT code for WoS article
001132699300001
EID of the result in the Scopus database
2-s2.0-85176106375