Suppression of anthracite dust by a composite of oppositely-charged ionic surfactants with ultra-high surface activity: Theoretical calculation and experiments

被引:30
作者
Bai, Xuyang [1 ]
Yan, Guochao [1 ]
Kong, Shaoqi [1 ]
Yao, Jia [2 ]
Wen, Pengcheng [1 ]
Li, Gang [1 ]
Li, Jiajun [1 ]
Zhang, Jiawei [1 ]
机构
[1] Taiyuan Univ Technol, Sch Min Engn, Taiyuan 030024, Peoples R China
[2] Univ Wyoming, Dept Petr Engn, Laramie, WY 82071 USA
关键词
Anthracite dust; Anionic and cationic surfactant composites; Ultra -high surface activity; Dust suppressant; WETTABILITY ALTERATION; COAL-DUST; NONCATIONIC SURFACTANTS; SPONTANEOUS IMBIBITION; WATER; ADSORPTION; MINE; GAS; PERFORMANCE; RESERVOIRS;
D O I
10.1016/j.fuel.2023.128075
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
In this study, we developed composite anionic-cationic (AC) surfactants with ultra-high surface activity using sodium alpha olefin sulfonate and octadecyltrimethylammonium chloride to improve the wettability and dust suppression efficiency of coal dust. Moreover, we investigated the synergistic suppression mechanisms of AC surfactant compounds at a molecular level. The thermodynamics of the self-assembly suggested that the sur-factant molecules in the composite solution form a flexible alternating anion-cation bilayer. The analysis of the critical micelle concentration (CMC), surface tension (24.121 mN.m(-1)), contact angle (35.14 degrees) and settling time (18 s) of the composite surfactant solution proved the superior performance of our composite surfactants compared to the monomeric alternatives, resulting in enhanced wettability owing to an ultra-high surface ac-tivity. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) experiments revealed an increased number of hydrophilic groups on the surface of the composite surfactant-treated anthra-cite, explaining the microscopic mechanism behind the high wettability induced by the composite surfactant. The specific surface area and pore size distribution of anthracite before and after dust suppressant treatment were calculated, and it was concluded that the dust suppressant was adsorbed on the surface and in the pores of the anthracite. In addition, the microscopic external morphology of the anthracite was shown by scanning electron microscopy (SEM), and it was found that the dust suppressant showed filling and aggregation behavior. Wind erosion and evaporation resistance experimental results show that dust suppressant-treated coal dust has enhanced water retention and wind resistance. Our findings indicate that ionic surfactants with oppositely charged compounds are promising high-efficiency dust suppressants, laying the foundation for safe coal mining and providing a theoretical background for a broad range of applications, such as haze control.
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页数:14
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[1]   Spectroscopic and microscopic characterization of atmospheric particulate matter [J].
Ahmed, Manan ;
Guo, Xinxin ;
Zhao, Xing-Min .
INSTRUMENTATION SCIENCE & TECHNOLOGY, 2017, 45 (06) :659-682
[2]   Methanogenesis Potentials: Insights from Mineralogical Diagenesis, SEM and FTIR Features of the Permian Mikambeni Shale of the Tuli Basin, Limpopo Province of South Africa [J].
Akintola, George Oluwole ;
Amponsah-Dacosta, Francis ;
Rupprecht, Steven ;
Palaniyandy, Nithyadharseni ;
Mhlongo, Sphiwe Emmanuel ;
Gitari, Wilson Mugera ;
Edokpayi, Joshua Nosa .
MINERALS, 2021, 11 (06)
[3]   Wettability Alteration and Spontaneous Imbibition in Unconventional Liquid Reservoirs by Surfactant Additives [J].
Alvarez, J. O. ;
Schechter, D. S. .
SPE RESERVOIR EVALUATION & ENGINEERING, 2017, 20 (01) :107-117
[4]  
Bai X., 2022, Molecules, V27
[5]   Cationic and anionic surfactants interaction in water and methanol water mixed solvent media [J].
Bhattarai, Ajaya ;
Pathak, Kavita ;
Dev, Bikash .
JOURNAL OF MOLECULAR LIQUIDS, 2017, 229 :153-160
[6]   Insights into matrix compressibility of coals by mercury intrusion porosimetry and N2 adsorption [J].
Cai, Yidong ;
Li, Qian ;
Liu, Dameng ;
Zhou, Yingfang ;
Lv, Dawei .
INTERNATIONAL JOURNAL OF COAL GEOLOGY, 2018, 200 :199-212
[7]   Improving coal powder wettability using electrolyte assisted surfactant solution [J].
Chang, Ping ;
Xu, Guang ;
Chen, Yinping ;
Ghosh, Apurna ;
Moridi, Mohammad Ali .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2021, 613
[8]   The chemometric approach applied to FTIR spectral data for the analysis of lipid content in microalgae cultivated in different nitrogen sources [J].
Difusa, Amrita ;
Mohanty, K. ;
Goud, Vaibhav V. .
BIOMASS CONVERSION AND BIOREFINERY, 2016, 6 (04) :427-433
[9]   Preparation and characterization of a wetting-agglomeration-based hybrid coal dust suppressant [J].
Fan, Tao ;
Zhou, Gang ;
Wang, Jiayuan .
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION, 2018, 113 :282-291
[10]   Mechanistic study of wettability alteration of oil-wet sandstone surface using different surfactants [J].
Hou, Bao-feng ;
Wang, Ye-fei ;
Huang, Yong .
APPLIED SURFACE SCIENCE, 2015, 330 :56-64