20.500.12556/RUL-152577 Assessment of dimethyl sulphide odorous emissions during coal extraction process in Coal Mine Velenje Underground coal extraction at Coal Mine Velenje occasionally gives rise to odour complaints from local residents. This manuscript describes a robust quantification of odorous emissions of mine sources and a model-based analysis aimed to establish a better understanding of the sources, concentrations, dispersion, and possible control of odorous compounds during coal extraction process. Major odour sources during underground mining are released volatile sulphur compounds from coal seam that have characteristic malodours at extremely low concentrations at micrograms per cubic metre (μg/m$^3$) levels. Analysis of 1028 gas samples taken over a 6-year period (2008–2013) reveals that dimethyl sulphide ((CH$_3$)$_2$S) is the major odour active compound present in the mine, being detected on 679 occasions throughout the mine, while hydrogen sulphide (H$_2$S) and sulphur dioxide (SO$_2$) were detected 5 and 26 times. Analysis of gas samples has shown that main DMS sources in the mine are coal extraction locations at longwall faces and development headings and that DMS is releasing during transport from main coal transport system. The dispersion simulations of odour sources in the mine have shown that the concentrations of DMS at median levels can represent relatively modest odour nuisance. While at peak levels, the concentration of DMS remained sufficiently high to create an odour problem both in the mine and on the surface. Overall, dispersion simulations have shown that ventilation regulation on its own is not sufficient as an odour abatement measure. coal mine dimethyl sulphide odour coal gases mine ventilation dispersion modelling true false true Angleški jezik Ni določen Članek v reviji 2023-11-29 11:18:04 2023-11-29 11:18:05 2023-11-30 03:42:11 0000-00-00 00:00:00 2023 0 0 19 str. iss. 11, art. 1269 Vol. 195 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 502/504 1573-2959 10.1007/s10661-023-11755-z 167107075 s10661-023-11755-z_(1).pdf s10661-023-11755-z_(1).pdf 1 AB649B5904D8785F0DC9489425ECD62E 047d5bbba3135f37889b9b0abdeebde8494d54eec3a3b968ded8200cbac87054 e256b501-8ea0-11ee-9c6c-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178125 https://link.springer.com/article/10.1007/s10661-023-11755-z 0 cb6d2110-8ea0-11ee-9c6c-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178124 Naravoslovnotehniška fakulteta 0 0 0