首页|Effectiveness of coal mine dust control:A new technique for preparation and efficacy of self-adaptive microcapsule suppressant

Effectiveness of coal mine dust control:A new technique for preparation and efficacy of self-adaptive microcapsule suppressant

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This study aims to make full use of the agricultural waste peanut shells to lower material costs and achieve cleaner production at the same time.Cellulose nanofibrils(CNF)extracted from peanut shells were mixed with acrylic acid(AA)and dimethyl diallyl ammonium chloride(DMDAAC)to prepare a new type of capsule core(dust suppressant).Then,the self-adaptive AA-DM-CNF/CA microcapsules were prepared under the action of calcium alginate.The infrared spectroscopy and X-ray diffraction analysis results suggest that AA,DMDAAC and CNF have experienced graft copolymerization which leads to the formation of an amorphous structure.The scanning electron microscopy analysis results demonstrate that the internal dust suppressant can expand and break the wall after absorbing water,featuring a self-adaptive function.Meanwhile,the laser particle size analysis results show that the microcapsules,inside which the encapsulated dust suppressant can be observed clearly,maintain a good shape.The pro-duct performance experimental results reveal that the capsule core and the capsule wall achieve syner-gistic dust suppression,thus lengthening the dust suppression time.The product boasts good dust suppression,weather resistance,degradation and synergistic combustion performances.Moreover,this study,as the first report on the development and analysis of dust-suppressing microcapsules,fills in the research gap on the reaction mechanism between dust-suppressing microcapsules and coal by MS simulation.The proposed AA-DM-CNF/CA dust-suppressing microcapsules can effectively lower the dust concentration in the space and protect the physical and mental health of coal workers.In general,this research provides a new insight into the structure control and performance enhancement of dust sup-pressants.Expanding the application range of microcapsules is of crucial economic and social benefits.

Waste peanut shellAA-DM-CNF/CASelf-adaptiveDust suppression microcapsuleMolecular dynamics simulation

Bo Ren、Liang Yuan、Gang Zhou、Shuailong Li、Qunzhi Meng、Kai Wang、Bingyou Jiang、Guofeng Yu

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School of Emergency Management and Safety Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China

State Key Laboratory of Deep Coal Mining&Environment Protection,Huainan Mining Group Co.,LTD.,Huainan 232001,China

Key Laboratory of Industrial Dust Control and Occupational Health,Ministry of Education,Anhui University of Science and Technology,Huainan 232001,China

College of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China

Department of Civil and Environmental Engineering,University of Alberta,Edmonton T6G 2R3,Canada

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国家重点研发计划国家自然科学基金国家自然科学基金国家自然科学基金Qingchuang Science and Technology Project of Universities in Shandong Province,ChinaOutstanding Young Talents Project of Shandong University of Science and Technology国家留学基金委项目

2022YFC25032015227421552004150520740122019KJH005SKR22-5-01202108370223

2022

矿业科学技术学报(英文版)
中国矿业大学

矿业科学技术学报(英文版)

CSTPCDCSCDSCIEI
影响因子：1.222
ISSN：2095-2686
年,卷(期)：2022.32(6)
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