Eco-friendly composite dust suppressant based on Enteromorpha cellulose: Preparation, characterization and dust suppression mechanism

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-07-25 DOI:10.1016/j.powtec.2025.121477

Jinfeng Wang , Qimeng Zhao , Zhixin Wei , Xu Chen , Jia Ding , Wenbin Zhao

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Abstract

In addressing the issue of excessive dust generation during coal mining and transportation, as well as the detrimental impact of Enteromorpha (EP) outbreaks on marine ecosystems, an eco-friendly composite dust suppressant (CPPS) has been developed. This suppressant is created through the carboxymethylation modification of EP cellulose, which serves as the matrix, and incorporates polyvinyl alcohol (PVA) and polyacrylamide (PAM) as monomers. Using consolidation strength as the performance metric, the optimal compounding conditions for the dust suppressant at 60 °C were established through orthogonal experiments. The ideal ratio of the components PVA, PAM, and SDBS was determined to be 10:1:4, resulting in a consolidation strength of 77.3 HA for the optimal formulation. Under a simulated wind speed of 12 m/s, the dust suppression rate of the formulated product remains above 95 %. Furthermore, the contact angle between CPPS and the coal cake is reduced by 34 % in comparison to traditional dust suppressants. After 9 h, the water retention of the coal sample treated with CPPS stabilizes at approximately 18 %. Simulations using Materials Studio software indicate that CPPS enhances the infiltration of water molecules into coal dust and improves the adhesion between water and coal dust. This research is significant for the advancement of environmentally friendly composite dust suppressants and supports sustainable environmental practices.

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基于浒苔纤维素的环保型复合抑尘剂：制备、表征及抑尘机理

为了解决煤炭开采和运输过程中产生的过量粉尘以及Enteromorpha （EP）爆发对海洋生态系统的有害影响，开发了一种环保型复合抑尘剂（CPPS）。这种抑制剂是通过作为基质的EP纤维素的羧甲基化改性而产生的，并将聚乙烯醇（PVA）和聚丙烯酰胺（PAM）作为单体。以固结强度为性能指标，通过正交试验确定了该抑尘剂在60℃下的最佳配制条件。确定PVA、PAM、SDBS的理想配比为10:1:4，得到的最佳配方固结强度为77.3 HA。在12 m/s的模拟风速下，配制产品的抑尘率保持在95%以上。此外，与传统抑尘剂相比，CPPS与煤饼的接触角减小了34%。9 h后，经CPPS处理的煤样保水率稳定在18%左右。利用Materials Studio软件进行的模拟表明，CPPS增强了水分子对煤尘的渗透，改善了水与煤尘之间的附着力。该研究对环保型复合抑尘剂的发展具有重要意义，并支持可持续的环境实践。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.