http://hdl.handle.net/20.500.12128/22069
Tytuł: | Molecular and stable isotope composition of pollutants emitted during thermal processes within the Rymer coal waste dump (Upper Silesia, Poland) |
Autor: | Więcław, Dariusz Jurek, Krzysztof Fabiańska, Monika J. Bilkiewicz, Elżbieta Kowalski, Adam Misz-Kennan, Magdalena Ciesielczuk, Justyna |
Słowa kluczowe: | coal wastes; self-heating; Upper Silesia; stable isotopes; pyrolysis |
Data wydania: | 2021 |
Źródło: | "Minerals", Vol. 11, iss. 10, 2021, art. no. 1120, s. 1-20 |
Abstrakt: | Twenty-seven gases and sixteen rock wastes from the thermal active Rymer coal waste dump were collected. The composition and origin of gaseous, liquid, and solid pollutants emitted during the self-heating process and the development of these processes with time were established. Gases were subjected to determination of molecular and stable isotope (d13C and d2H) composition. Rock-Eval pyrolysis and pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) were applied for evaluation of the quantity and molecular composition of pyrolysates released during the heating of rocks in temperatures from 100 to 650 C. The main products of Py-GC-MS are released between 350 and 650 C, namely alkanes, aromatic hydrocarbons, and aromatic alcohols. These components were also recorded in Py-GC-MS products of samples collected from the dump surface. Besides the high-molecular-weight organic compounds, in emitted gases CO2, CO, gaseous hydrocarbons, and S-compounds were recorded. The stable isotope data indicated that methane was generated mainly during the low-temperature thermogenic process, but a share of the microbial-originated gas was visible. The source of the CO2 was the oxidation of organic matter. The gaseous S-compounds were products of high-temperature decomposition of sulphides and organic S-compounds. The hydrocarbon and CO contents of the emitted gases proved to be good indicators for tracking of the self-heating processes. |
URI: | http://hdl.handle.net/20.500.12128/22069 |
DOI: | 10.3390/min11101120 |
ISSN: | 2075-163X |
Pojawia się w kolekcji: | Artykuły (WNP) |
Plik | Opis | Rozmiar | Format | |
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Fabianska_et_al_Molecular_and_stable.pdf | 7,94 MB | Adobe PDF | Przejrzyj / Otwórz |
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