成果归属作者：

季淮君

成果归属机构：

工程技术学院

作者：

Zhu, Muyao ; Liu, Zhen ; Yang, He ; Jiao, Lishuai ; Yang, Yongliang ; Ji, Huaijun

单位：

Shandong Univ Sci & Technol, Coll Safety & Environm Engn, 579 Qianwangang Rd, Qingdao 266590, Peoples R China;Shandong Univ Sci & Technol, State Key Lab Min Disaster Prevent & Control Cofou, CoFounded Shandong Prov & Minist Sci & Technol, Qingdao 266590, Peoples R China;Shandong Univ Sci & Technol, Shandong Key Lab Intelligent Prevent & Control Dyn, Qingdao 266590, Peoples R China;Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada;China Univ Min & Technol, Sch Safety Engn, Xuzhou 221116, Peoples R China;China Univ Geosci Beijing, Sch Engn & Technol, Beijing 100083, Peoples R China

关键词：

DUST; MINE

摘要：

In order to enhance the water injection wetting effect in underground coal mines under different acid-base environments, reduce dust generation, and improve the working environment, this paper explores the wetting effects and mechanisms of liquids on coal under different pH conditions through macro-experiments and microsimulations. The results indicate that altering the acid-base environment of the solution leads to an increase in the sedimentation of coal samples and a decrease in the contact angle, demonstrating that the acidity or alkalinity of the solution can impact the wetting effect of liquids on coal. Simultaneously, the highest C-O content of 27.1 % is found in coal samples treated with SDS solution at pH = 4, while the highest C--O content of 13.9 % is observed in coal samples treated with SDS solution at pH = 9. Through molecular dynamics simulations, it is discovered that under alkaline conditions, the diffusion coefficient of water molecules reaches a maximum of 0.8682, and the contact concentration range between water molecules and coal molecules expands from 7.8 to 37.1 & Aring; to 6.6-44.5 & Aring;. Furthermore, the maximum negative electrostatic potential on the coal molecule surface increases from -0.06715 a.u. to -0.08107 a.u., suggesting that liquids exhibit better wetting effects on coal in alkaline environments. These research findings provide theoretical support for further enhancing the effectiveness of dust reduction through water injection.

基金：

National Natural Science Foundation of China [52274213, 52474239, 52074173]; Natural Science Foundation of Shandong Province [ZR2022YQ52, ZR2023QE132]; Chang Jiang Scholars Program [Q2023432]; Taishan Scholars Project Special Funding [tsqn202306200, TS20190935]; Program of China Scholarship Council [202408370220]

语种：

英文

DOI：

10.1016/j.ces.2025.122451

来源：

CHEMICAL ENGINEERING SCIENCE,2026():.

出版日期：

2026-01-15

提交日期：

2025-09-23

引用参考：

Zhu, Muyao; Liu, Zhen; Yang, He; Jiao, Lishuai; Yang, Yongliang; Ji, Huaijun. Mechanism of the influence of liquids on the wettability characteristics of coal under different acid-base environments: Experimental and molecular dynamics simulation study[J]. CHEMICAL ENGINEERING SCIENCE,2026():.