热液循环
溶剂
化学工程
化学
表面积体积比
体积热力学
能量转换效率
过程(计算)
材料科学
有机化学
计算机科学
光电子学
量子力学
操作系统
物理
工程类
作者
Xin Wang,Wenjing Lu,Hui Wang,Jingzhe Zhang,Zhiguo Qu,Fuming Chen
标识
DOI:10.1016/j.jhazmat.2023.130968
摘要
Hydrothermal processes are considered a promising strategy for the conversion of ever-growing plastic wastes. Plasma-assisted peroxymonosulfate-hydrothermal process has attracted increasing attention in enhancing the efficiency of hydrothermal conversion. However, the role of solvent in this process is unclear and rarely researched. Herein, the conversion process with different water-based solvents was investigated based on a plasma-assisted peroxymonosulfate-hydrothermal reaction. As the ratio of the solvent effective volume in the reactor increased from 20% to 53.3%, the conversion efficiency displayed an obvious decrease from 7.1% to 4.2%. The results indicated that the increased pressure caused by the solvent greatly reduced the surface reaction and forced the hydrophilic groups to shift back to the carbon chain, thereby reducing the reaction kinetics. A further increase in the solvent effective volume ratio could promote the conversion in the inner layer of the plastics to achieve an increase of the conversion efficiency. These findings can provide valuable guidance for the design of hydrothermal conversion for plastic wastes.
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