Medium optimization and dust suppression performance analysis of microbial-based dust suppressant compound by response surface curve method

Hu, Xiangming; Yang, Zhiyuan; Zhao, Yanyun; Dong, Yue; Wang, Chengcheng; Zhang, Linlin; Yu, Yiyun; Wu, Kai; Ren, Liyan

doi:10.1007/s11356-024-32748-6

Cited by 3 publications

(1 citation statement)

References 47 publications

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“…SDS promoted the depressing effect of acidified coal bodies and reduced the strength of the treated coal samples [23]. Some scholars have mainly focused on the in-depth R&D and preparation of dust suppressants in order to be able to improve the wettability of coal more effectively [24][25][26]. Some scholars have used molecular simulation to reveal at depth the wetting mechanism of coal dust surface and concluded that an important factor affecting the wettability of coal surface is the ability of hydrophilic functional groups on the coal surface to form hydrogen bonds with water molecules [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Research on Mechanism of Surfactant Improving Wettability of Coking Coal Based on Molecular Dynamics

Liu,

Li,

Ling

et al. 2024

Processes

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Coal dust is a major safety hazard in the process of coal mining and is of great importance to ensure production safety and maintain the health of operators. In order to understand the microscopic mechanism during coal seam water injection and reveal the mechanism of surfactants in improving the wettability of coal dust, coking coal was selected as the research object. Three surfactants, SDBS, AEO-9, and CAB-35, were chosen for molecular dynamics simulation research on the wetting and adsorption properties of water/coal/surfactants. The results show that surfactant molecules can cover the hydrophobic groups on the surface of coking coal, forming a hydrophilic adsorption layer, changing the coal surface from hydrophobic to hydrophilic, and enhancing the wettability. After adding surfactants, the thickness of the adsorption layer in the z-axis direction increases, expanding the contact area between coking coal and water molecules, thereby improving the wettability. When surfactants tightly cover the surface of coking coal, their binding strength increases, forming a more stable hydrophilic layer and further improving the wettability. At the same time, surfactants promote the diffusion of water molecules and enhance the interaction between hydrophobic alkyl chains and water molecules, further enhancing the wetting effect.

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Section: Introductionmentioning

confidence: 99%

Research on Mechanism of Surfactant Improving Wettability of Coking Coal Based on Molecular Dynamics

Liu,

Li,

Ling

et al. 2024

Processes

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The inhibitory effect of microbes on coal spontaneous combustion

Dong,

Wang,

Guo

et al. 2024

Fuel

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Research on Optimized Design, Synthesis Mechanism, and Performance of Composite Dust Suppressant for Laterite in a Plateau

Wu,

Xu,

Yang

et al. 2024

ACS Omega

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Currently, a paucity of targeted dust suppressants exists for the management of laterite dust, and most of them lack sufficient resistance to the harsh conditions in the plateau areas, such as high temperatures, low rainfall, and wind erosion. To solve the problem, a new type of dust suppressant must be developed. Initially, xanthan gum was employed to enhance the viscosity and stability of guar gum. Subsequently, the synergistic mechanism between the reagents was considered, and the composition of the composite dust suppressant was selected as poly(acrylic acid), sodium dodecyl sulfate, guar gum, and xanthan gum by one- and two-factor methods. The dosage of each component was then determined via orthogonal experiments. To increase the suitability of the dust suppressant in high-temperature and low-humidity environments, hydroxypropyl methylcellulose was added to enhance the “film” effect. Both intuitive and polar analysis methods demonstrated that the composite dust suppressant was the optimal choice for controlling laterite dust emissions. The performance test experimental results show that the dust suppressant can fill the gap between particles well after spraying, the solidified layer formed is flat and smooth, and the moisture content of the sample was still above 9% after 72 h. The hardness of the consolidation layer can reach 42 HA, which can resist the destructive ability of external force; when the wind speed is 7 m/s, the mass loss rate stays below 0.63%, and the emission concentrations of PM 2.5 and PM 10 are 32 μg/m 3 and 43 μg/m 3 , respectively, which is in line with the requirements of the emission standards. The dust suppressant components are all less toxic to plants, and the degradation rate can reach 57.84% in the sixth cycle, ensuring degradability and biocompatibility. The composite dust suppressant demonstrated superior performance to that of the two commercially available dust suppressants. It exhibited remarkable adaptability to harsh environments, effectively regulating construction site dust emissions and reducing particulate matter in the air.

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Medium optimization and dust suppression performance analysis of microbial-based dust suppressant compound by response surface curve method

Cited by 3 publications

References 47 publications

Research on Mechanism of Surfactant Improving Wettability of Coking Coal Based on Molecular Dynamics

Research on Mechanism of Surfactant Improving Wettability of Coking Coal Based on Molecular Dynamics

The inhibitory effect of microbes on coal spontaneous combustion

Research on Optimized Design, Synthesis Mechanism, and Performance of Composite Dust Suppressant for Laterite in a Plateau

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