Corncob-Derived Binder with Synergistic Dust Control: Fabrication, Multi-Scale Characterization, and Field-Relevant
Hao Wang1,2,3, Zhuang Liu1, Lianjun Chen1,2,3
1School of Mechanical & Automotive Engineering, Qingdao University of Technology, Qingdao, Shandong 266520, China.
ACS Omega
|February 16, 2026
Summary
This study developed a novel biobased adhesive dust suppressant from corncob to combat coal dust pollution in railway tunnels. The optimized formula effectively binds coal dust, significantly reducing airborne concentrations and improving safety.
Area of Science:
- Materials Science
- Environmental Engineering
- Chemical Engineering
Background:
- Coal dust in railway tunnels poses significant risks to driving safety.
- Existing dust suppressants often exhibit insufficient performance and environmental concerns.
Purpose of the Study:
- To develop an eco-friendly, biobased adhesive dust suppressant for railway tunnel coal transportation.
- To optimize the formulation and evaluate the performance of the novel dust suppressant.
Main Methods:
- Orthogonal experiments were used to determine the optimal formulation using corncob, acrylic acid (AA), ethylene glycol dimethacrylate (EGDMA), and sodium dodecyl sulfate (SDS).
- Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) characterized the material's morphology and structure.
- Molecular dynamics simulations investigated the wetting process at the coal-water interface.
Main Results:
- The optimal mass ratio of AA:EGDMA:SDS was found to be 2:2:1.
- The dust suppressant formed a dense, scale-like solidified layer, effectively binding coal dust particles.
- Molecular dynamics simulations revealed enhanced interaction between coal and water molecules due to the suppressant's amphiphilic structure.
- An optimal application concentration of 1.5% significantly reduced peak and average dust concentrations and shortened dust emission duration.
Conclusions:
- The developed biobased adhesive dust suppressant offers a promising solution for controlling coal dust pollution in railway tunnels.
- The material's unique structure and properties lead to effective and durable dust suppression.
- Further research can explore large-scale application and long-term performance evaluations.
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