Highly efficient coke dust suppressant with anti-freezing capabilities

被引：0
作者：
Lee, Jaewook [1 ]
Lee, Hyomin [1 ]
机构：
[1] Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Gyeongbuk, Pohang
来源：
Chemosphere | 2024年 / 366卷
基金：
新加坡国家研究基金会;
关键词：
Anti-freezing; Coke dust; Dust suppressant; Polyethyleneimine; Starch;
D O I：
10.1016/j.chemosphere.2024.143491
中图分类号：
学科分类号：
摘要：
Stockpiled coke is prone to wind-blowing emissions, leading to economic losses and environmental pollution which imposes severe threats to human health. While various polysaccharide-based dust suppressants have been explored to resolve this issue, they often suffer from ineffective control of wettability, poor coverage, and suppression effect in extreme weather conditions, and require additional use of cross-linking agents and surfactants due to their weak interaction with coke. Herein, we present coke dust suppressants comprising polyethyleneimine (PEI), starch, and glycerol to address these shortcomings. Our detailed investigations show that the low toxicity, cationic polymer (PEI) electrostatically interacts with the coke, increasing the wettability and promoting aggregation. Moreover, PEI hydrogen-bonds with starch to form a stable film and enhances the water-retention capability. Furthermore, the addition of glycerol lowers the freezing point to −13 °C, preventing coke loss caused by freezing during transportation and energy loss associated with dismantling the frozen coke. Wind erosion tests and bomb calorimeter results reveal that the coke dust suppressant exhibits superior wind resistance and does not interfere with the coke combustion. © 2024 Elsevier Ltd
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  • [1] Apriyanto A., Compart J., Fettke J., A review of starch, a unique biopolymer–Structure, metabolism and in planta modifications, Plant Sci., 318, (2022)
  • [2] Bao Q., Nie W., Liu C., Liu Y., Zhang H., Wang H., Jin H., Preparation and characterization of a binary‐graft‐based, water‐absorbing dust suppressant for coal transportation, J. Appl. Polym. Sci., 136, (2019)
  • [3] Bao Q., Nie W., Liu C., Zhang H., Wang H., Jin H., Yan J., Liu Q., The preparation of a novel hydrogel based on crosslinked polymers for suppressing coal dusts, J. Clean. Prod., 249, (2020)
  • [4] Bera A., Trivedi J.S., Jewrajka S.K., Ghosh P.K., In situ manipulation of properties and performance of polyethyleneimine nanofiltration membranes by polyethylenimine-dextran conjugate, J. Membr. Sci., 519, pp. 64-76, (2016)
  • [5] Bing H., Ma W., Laboratory investigation of the freezing point of saline soil, Cold Reg. Sci. Technol., 67, pp. 79-88, (2011)
  • [6] Bogdan A., Molina M.J., Tenhu H., Loerting T., Multiple glass transitions and freezing events of aqueous citric acid, J. Phys. Chem., 119, pp. 4515-4523, (2015)
  • [7] Chang P., Xu G., Chen Y., Liu Y., Experimental evaluation of the surfactant adsorptions performance on coal particles with different properties, Colloids Surf. A Physicochem. Eng. Asp., 648, (2022)
  • [8] Chen M., Zhou W., Wang A., Huang A., Chen J., Xu J., Wong C.-P., Anti-freezing flexible aqueous Zn–MnO 2 batteries working at− 35° C enabled by a borax-crosslinked polyvinyl alcohol/glycerol gel electrolyte, Journal of materials chemistry A, 8, pp. 6828-6841, (2020)
  • [9] Chen Y., Xu G., Huang J., Eksteen J., Liu X., Zhao Z., Characterization of coal particles wettability in surfactant solution by using four laboratory static tests, Colloids Surf. A Physicochem. Eng. Asp., 567, pp. 304-312, (2019)
  • [10] Cong X., Cao S., Chen Z., Peng S., Yang S., Impact of the installation scenario of porous fences on wind-blown particle emission in open coal yards, Atmos. Environ., 45, pp. 5247-5253, (2011)
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