{"title":"Study of Long-Term Leachability of Major and Trace Elements in Coal Mining Wastes","authors":"Jie Hao, E. M. Kochetkova, S. A. Epshtein","doi":"10.3103/S0361521924700265","DOIUrl":null,"url":null,"abstract":"<p>Results of approbation of the methodology developed at NUST MISIS for assessing the long-term leachability of major and trace elements out of coal mining wastes are presented. This methodology is used to assess the impact of such wastes on the environment when they are placed in dumps or used for reclamation. Three coal mining wastes of various mineral and chemical compositions have been tested. The results have demonstrated that the prolonged treatment of waste with a high sulphur content leads to the oxidation of sulphur-containing compounds, resulting in a significant increase in concentration of water-soluble forms of sulphur, calcium, iron, potassium, sodium and magnesium after the 6th week of treatment, as well as in a decrease in the total sulphur content after the 9th week of processing.</p>","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":"58 5","pages":"370 - 376"},"PeriodicalIF":0.8000,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid Fuel Chemistry","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.3103/S0361521924700265","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
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Abstract
Results of approbation of the methodology developed at NUST MISIS for assessing the long-term leachability of major and trace elements out of coal mining wastes are presented. This methodology is used to assess the impact of such wastes on the environment when they are placed in dumps or used for reclamation. Three coal mining wastes of various mineral and chemical compositions have been tested. The results have demonstrated that the prolonged treatment of waste with a high sulphur content leads to the oxidation of sulphur-containing compounds, resulting in a significant increase in concentration of water-soluble forms of sulphur, calcium, iron, potassium, sodium and magnesium after the 6th week of treatment, as well as in a decrease in the total sulphur content after the 9th week of processing.
期刊介绍：
The journal publishes theoretical and applied articles on the chemistry and physics of solid fuels and carbonaceous materials. It addresses the composition, structure, and properties of solid fuels. The aim of the published articles is to demonstrate how novel discoveries, developments, and theories may be used in improved analysis and design of new types of fuels, chemicals, and by-products. The journal is particularly concerned with technological aspects of various chemical conversion processes and includes papers related to geochemistry, petrology and systematization of fossil fuels, their beneficiation and preparation for processing, the processes themselves, and the ultimate recovery of the liquid or gaseous end products.
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