Overlooked source of hydrogen: The environmental potential of chlor-alkali by-product

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Overlooked source of hydrogen: The environmental potential of chlor-alkali by-product

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Overlooked source of hydrogen: The environmental potential of chlor-alkali by-product

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Hydrogen Energy

ISSN

0360-3199

e-ISSN

1879-3487

Svazek periodika

Neuveden

Číslo periodika v rámci svazku

49, part C

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

1437-1443

Kód UT WoS článku

001132699300001

EID výsledku v databázi Scopus

2-s2.0-85176106375