College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China.
Environ Sci Technol. 2020 Jul 7;54(13):7992-8000. doi: 10.1021/acs.est.0c00613. Epub 2020 Jun 10.
During transportation and storage, coal produces a lot of dust, which pollutes the environment and threatens the occupational health of workers. Although many dust suppressants have been developed for dust prevention at work, the implementation of current dust suppressants does not meet the requirements due to various factors such as the hydrophobic nature of coal dust and a harsh external environment. In this study, hydroxyethyl cellulose, acrylamide, and stearyl methyl acrylate were used for micelle polymerization to prepare an environmental protection dust suppressant for preventing dust during coal storage and transportation. The microstructure of the reactants and the products was analyzed by Fourier transform infrared as well as scanning electron microscopy. The strength and self-healing tensile properties of binder coal were taken as indicators to determine the best synthesis dosage and conditions. The dust suppressant particles are applied to the dust accumulation area, contact each other after water absorption, and swell to complete the healing, to achieve the purpose of dust control. The evaluation of the relevant properties of the dust suppressant reveals that the dust suppressant has a good covering effect, an excellent dust suppressant performance, and a significant dust suppression action.
在运输和储存过程中，煤炭会产生大量粉尘，不仅污染环境，还会威胁到工人的职业健康。尽管已经开发出许多防尘剂来防止工作中的粉尘，但由于煤尘的疏水性和恶劣的外部环境等各种因素，目前的防尘剂的实施并不符合要求。在这项研究中，使用羟乙基纤维素、丙烯酰胺和硬脂基甲基丙烯酸酯进行胶束聚合，制备了一种用于防止煤炭储存和运输过程中扬尘的环保型防尘剂。通过傅里叶变换红外光谱和扫描电子显微镜对反应物和产物的微观结构进行了分析。以粘结煤的强度和自修复拉伸性能为指标，确定了最佳的合成用量和条件。将防尘剂颗粒施加到粉尘积聚区域，在吸水后相互接触并膨胀，以完成愈合，从而达到控制粉尘的目的。对防尘剂相关性能的评价表明，该防尘剂具有良好的覆盖效果、优异的防尘性能和显著的抑尘作用。
