A Shannon entropy-based model for the gas adsorption process by coal

IF 2.8 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Environmental Earth Sciences Pub Date : 2024-12-11 DOI:10.1007/s12665-024-12003-4

Zhongfan Zhu, Luoying Li

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引用次数: 0

Abstract

The adsorption behavior of gas by coal layers is crucial for preventing and controlling mine gas disasters, alleviating supply issues related to conventional fossil fuels, and reducing environmental pollution. Therefore, this study aims to characterize the gas adsorption process in coal using a probability method based on Shannon entropy theory. The proposed entropic model effectively predicts the temporal variation of gas adsorption in coal, demonstrating a high correlation coefficient of 0.941, a relative error of 0.101, and a low relative root mean square error of 0.201. Furthermore, the maximum gas adsorption capacity identified in the entropy-based model is closely associated with several influencing factors, including temperature, pressure, moisture content, coal particle size, and coal type. The calibrated entropic model features a straightforward mathematical form and serves as a valuable tool for predicting variations in gas adsorption amounts in various engineering scenarios, provided that certain conditions (temperature, pressure, moisture content, and coal characteristics) are established from limited datasets.

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煤吸附气体过程的香农熵模型

煤层对瓦斯的吸附行为对防治矿山瓦斯灾害、缓解常规化石燃料的供应问题、减少环境污染具有重要意义。因此，本研究旨在利用基于香农熵理论的概率方法表征煤中气体吸附过程。该熵模型有效地预测了煤中气体吸附的时间变化，相关系数为0.941，相对误差为0.101，相对均方根误差为0.201。此外，在基于熵的模型中确定的最大气体吸附容量与温度、压力、含水率、煤粒度和煤类型等几个影响因素密切相关。校准的熵模型具有简单的数学形式，可以作为预测各种工程场景中气体吸附量变化的有价值的工具，前提是某些条件（温度、压力、水分含量和煤的特性）是由有限的数据集建立的。

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来源期刊

Environmental Earth Sciences 环境科学-地球科学综合

CiteScore

5.10

自引率

3.60%

发文量

494

审稿时长

8.3 months

期刊介绍： Environmental Earth Sciences is an international multidisciplinary journal concerned with all aspects of interaction between humans, natural resources, ecosystems, special climates or unique geographic zones, and the earth: Water and soil contamination caused by waste management and disposal practices Environmental problems associated with transportation by land, air, or water Geological processes that may impact biosystems or humans Man-made or naturally occurring geological or hydrological hazards Environmental problems associated with the recovery of materials from the earth Environmental problems caused by extraction of minerals, coal, and ores, as well as oil and gas, water and alternative energy sources Environmental impacts of exploration and recultivation – Environmental impacts of hazardous materials Management of environmental data and information in data banks and information systems Dissemination of knowledge on techniques, methods, approaches and experiences to improve and remediate the environment In pursuit of these topics, the geoscientific disciplines are invited to contribute their knowledge and experience. Major disciplines include: hydrogeology, hydrochemistry, geochemistry, geophysics, engineering geology, remediation science, natural resources management, environmental climatology and biota, environmental geography, soil science and geomicrobiology.