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Synthesis and characteristics of a novel dust suppressant with good weatherability for controlling dust in open coal yards

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Abstract

This study aims to synthesize a dust suppressant for controlling coal dust pollution in open yards using natural polymers. Guided by graft copolymerization theory, potassium persulfate acts as an initiator to excite the free radicals of collagen and sodium alginate, allowing them to combine with acrylic acid and acrylamide to form a new polymer. The TG curve indicates that the thermal stability of the polymer is superior to that of the raw material. Scanning electron microscope (SEM) images show that the product can reduce the generation of dust by bonding the pulverized coal. With CCD method, when the monomer concentration increases in a certain range, the cohesive ability of the product to coal increases first and then decreases. Initiators and crosslinkers showed the same pattern. A series of performance experiments show that the product has a dust suppression rate of 98.7% at a wind speed of 14 m/s, and maintain one of 94.5% at a wind speed of 8 m/s after a rainstorm. In addition, there was no significant loss in dust suppression performance and compressive strength of the solidified layer after wind and rain. Sunlight, low temperature, and high temperature have little influence on the dust suppression effect of the product, which indicates that the product has better weather resistance and helps to suppress dust for a longer time in open air conditions.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (Grant no. 51774198, 51904171), the Qingchuang Science and Technology Project of Shandong Province University, China (Grant no. 2019KJH005), the Outstanding Youth Fund Project of Provincial Universities in Shandong Province, China (Grant no. ZR2017JL026), the National Key Research and Development Program of China (Grant no. 2017YFC0805202), the Natural Science Foundation of Shandong Provenience, China (Grant no. ZR2019BEE067), the Qingdao Postdoctoral Applied Research Project, China (Grant no. 2015194).

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Authors and Affiliations

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

    Yuying Wang, Gang Zhou, Cuicui Xu & Wenjing Jiang

  2. 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

    Yuying Wang, Gang Zhou, Cuicui Xu & Wenjing Jiang

  3. Production Technology Department, Shandong Energy Feicheng Mining Group, Feicheng, 271608, China

    Zhixue Zhang

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  1. Yuying Wang
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  2. Gang Zhou
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Correspondence to Cuicui Xu.

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Wang, Y., Zhou, G., Xu, C. et al. Synthesis and characteristics of a novel dust suppressant with good weatherability for controlling dust in open coal yards. Environ Sci Pollut Res 27, 19327–19339 (2020). https://doi.org/10.1007/s11356-020-08309-y

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