Possibilities of Practical Use of Historical Distributions of Ash, Sulfur and Mercury Contents in Commercial Steam Coal of the USCB
In the process of extracting hard coal, extensive databases are created on its quality parameters. A statistical assessment was made of the ash, sulfur, and mercury content of commercial coals produced in the Upper Silesian Coal Basin (USCB). The statistical methods applied: non-parametric tests of...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/23/7/900 |
| _version_ | 1797527169717501952 |
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| author | Ireneusz Pyka Wojciech Kempa Krzysztof Wierzchowski |
| author_facet | Ireneusz Pyka Wojciech Kempa Krzysztof Wierzchowski |
| author_sort | Ireneusz Pyka |
| collection | DOAJ |
| description | In the process of extracting hard coal, extensive databases are created on its quality parameters. A statistical assessment was made of the ash, sulfur, and mercury content of commercial coals produced in the Upper Silesian Coal Basin (USCB). The statistical methods applied: non-parametric tests of compatibility for two populations, parametric significance tests, and non-parametric tests of compatibility for the three populations, showed that the distributions of ash and sulfur content in 2014 and 2015 are comparable and the average values are similar. Statistical tests indicated significant differences in the mercury content distributions and their variances. This demonstrates the need for ongoing monitoring of mercury content in commercial coals, as a prediction of mercury content from historical data is hardly possible. |
| first_indexed | 2024-03-10T09:40:13Z |
| format | Article |
| id | doaj.art-7519300f19e8400b86b16faf80ddcbf8 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-10T09:40:13Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-7519300f19e8400b86b16faf80ddcbf82023-11-22T03:45:32ZengMDPI AGEntropy1099-43002021-07-0123790010.3390/e23070900Possibilities of Practical Use of Historical Distributions of Ash, Sulfur and Mercury Contents in Commercial Steam Coal of the USCBIreneusz Pyka0Wojciech Kempa1Krzysztof Wierzchowski2Central Mining Institute, 40-166 Katowice, PolandDepartment of Mathematics Applications and Methods for Artificial Intelligence, Faculty of Applied Mathematics, Silesian University of Technology, 44-100 Gliwice, PolandCentral Mining Institute, 40-166 Katowice, PolandIn the process of extracting hard coal, extensive databases are created on its quality parameters. A statistical assessment was made of the ash, sulfur, and mercury content of commercial coals produced in the Upper Silesian Coal Basin (USCB). The statistical methods applied: non-parametric tests of compatibility for two populations, parametric significance tests, and non-parametric tests of compatibility for the three populations, showed that the distributions of ash and sulfur content in 2014 and 2015 are comparable and the average values are similar. Statistical tests indicated significant differences in the mercury content distributions and their variances. This demonstrates the need for ongoing monitoring of mercury content in commercial coals, as a prediction of mercury content from historical data is hardly possible.https://www.mdpi.com/1099-4300/23/7/900coalcoal parametersprobability distributionvarianceprediction |
| spellingShingle | Ireneusz Pyka Wojciech Kempa Krzysztof Wierzchowski Possibilities of Practical Use of Historical Distributions of Ash, Sulfur and Mercury Contents in Commercial Steam Coal of the USCB Entropy coal coal parameters probability distribution variance prediction |
| title | Possibilities of Practical Use of Historical Distributions of Ash, Sulfur and Mercury Contents in Commercial Steam Coal of the USCB |
| title_full | Possibilities of Practical Use of Historical Distributions of Ash, Sulfur and Mercury Contents in Commercial Steam Coal of the USCB |
| title_fullStr | Possibilities of Practical Use of Historical Distributions of Ash, Sulfur and Mercury Contents in Commercial Steam Coal of the USCB |
| title_full_unstemmed | Possibilities of Practical Use of Historical Distributions of Ash, Sulfur and Mercury Contents in Commercial Steam Coal of the USCB |
| title_short | Possibilities of Practical Use of Historical Distributions of Ash, Sulfur and Mercury Contents in Commercial Steam Coal of the USCB |
| title_sort | possibilities of practical use of historical distributions of ash sulfur and mercury contents in commercial steam coal of the uscb |
| topic | coal coal parameters probability distribution variance prediction |
| url | https://www.mdpi.com/1099-4300/23/7/900 |
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