Secondary processes on coal deposits change the emission of greenhouse gases

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43933989" target="_blank" >RIV/60461373:22310/22:43933989 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/22:00128088 RIV/00025798:_____/22:00000114

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0166516222001781?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0166516222001781?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.coal.2022.104102" target="_blank" >10.1016/j.coal.2022.104102</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Secondary processes on coal deposits change the emission of greenhouse gases

Popis výsledku v původním jazyce

The opencast Bilina coal mine (Czech Republic) produces eight million tons of subbituminous coal per year. To evaluate greenhouse gas emissions from the mine, we measured the chemical and isotopic composition of gases released from fresh coals using the canister method and after coal crushing and milling. The δ13C values of the released methane (CH4) and carbon dioxide (CO2) corresponded to their biogenic origin (δ13C (CH4) −70 ‰ to −55 ‰ vs. VPDB, δ2H − 275 ‰ to −260 ‰ vs. VSMOW, δ13C (CO2) -10 ‰ to −16 ‰ vs. VPDB). The findings revealed that secondary biogenic gas production replaced original coal bed gases and the excavated coal is rich in CO2 (0.615 m3 ton−1), but very low in CH4 (0.09 m3 ton−1). Additionally, most of the secondary CH4 was released before excavation. The loss of CH4 (0.235 m3 ton−1) was calculated back from the isotope fractionation of residual CO2. High CO2 emission increased its atmospheric concentration in the mine (570–2000 ppm). © 2022

Název v anglickém jazyce

Secondary processes on coal deposits change the emission of greenhouse gases

Popis výsledku anglicky

The opencast Bilina coal mine (Czech Republic) produces eight million tons of subbituminous coal per year. To evaluate greenhouse gas emissions from the mine, we measured the chemical and isotopic composition of gases released from fresh coals using the canister method and after coal crushing and milling. The δ13C values of the released methane (CH4) and carbon dioxide (CO2) corresponded to their biogenic origin (δ13C (CH4) −70 ‰ to −55 ‰ vs. VPDB, δ2H − 275 ‰ to −260 ‰ vs. VSMOW, δ13C (CO2) -10 ‰ to −16 ‰ vs. VPDB). The findings revealed that secondary biogenic gas production replaced original coal bed gases and the excavated coal is rich in CO2 (0.615 m3 ton−1), but very low in CH4 (0.09 m3 ton−1). Additionally, most of the secondary CH4 was released before excavation. The loss of CH4 (0.235 m3 ton−1) was calculated back from the isotope fractionation of residual CO2. High CO2 emission increased its atmospheric concentration in the mine (570–2000 ppm). © 2022

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10500 - Earth and related environmental sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

INTERNATIONAL JOURNAL OF COAL GEOLOGY

ISSN

0166-5162

e-ISSN

—

Svazek periodika

262

Číslo periodika v rámci svazku

262

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

nestránkováno

Kód UT WoS článku

000870199600002

EID výsledku v databázi Scopus

2-s2.0-85138461670