Study of Long-Term Leachability of Major and Trace Elements in Coal Mining Wastes

IF 0.8 4区 工程技术 Q4 CHEMISTRY, MULTIDISCIPLINARY
Jie Hao, E. M. Kochetkova, S. A. Epshtein
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引用次数: 0

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.

Abstract Image

采煤废料中主要元素和微量元素的长期浸出性研究
本报告介绍了国家科学和技术大学 MISIS 开发的评估采煤废物中主要元素和痕量元素长期浸出性的方法的批准结果。该方法可用于评估此类废物在堆放或用于复垦时对环境的影响。对三种不同矿物和化学成分的采煤废料进行了测试。结果表明,长期处理含硫量高的废料会导致含硫化合物氧化,从而使水溶性硫、钙、铁、钾、钠和镁的浓度在处理第 6 周后显著增加,并使总硫含量在处理第 9 周后下降。
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来源期刊
Solid Fuel Chemistry
Solid Fuel Chemistry CHEMISTRY, MULTIDISCIPLINARY-ENERGY & FUELS
CiteScore
1.10
自引率
28.60%
发文量
52
审稿时长
6-12 weeks
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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