Thermal degradation mechanism of low-density polyethylene plastic wastes in cyclohexane

被引:16
|
作者
Karaduman, A [1 ]
Simsek, EH [1 ]
机构
[1] Ankara Univ, Fac Engn, Dept Chem Engn, TR-06100 Ankara, Turkey
关键词
thermal degradation; degradation mechanism; LDPE; plastic wastes; chemical recycling;
D O I
10.1023/A:1020252806505
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The thermal LDPE degradation mechanism harnessing a high-pressure autoclave surrounded by a furnace was investigated in this work. Rates of formation of gas, liquid, and solid during degradation of PE plastic wastes in cyclohexane as solvent at 400 and 425degreesC have been experimentally determined. Four reaction mechanisms have been proposed and tested to estimates of gas, liquid, and solid. Proposed mechanisms are based on the assumption that the reactions are pseudo-first-order with respect to the reacting species. Pseudo-first-order rate constants for each of the indicated mechanistic steps have been calculated by nonlinear regression analysis. The best fit was obtained by model 2 (pure parallel reaction mechanism), and its activation energy was determined.
引用
收藏
页码:85 / 90
页数:6
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