Thermal degradation of KN90 gauze mask rope waste: Thermogravimetric and thermodynamic analyses, kinetic modeling and volatile products

Abstract

Pyrolysis is a promising thermal conversion method to dispose medical wastes. The pyrolysis behaviors, kinetics, thermodynamics and volatile products of KN90 gauze mask rope waste in nitrogen are studied under current study. The results indicate that two stages (stage 1: 0 ≤ α carbon dioxide > aromatic compounds > olefins > compounds containing carbonyl groups > alkynes > alcohols and water vapor. The possible chemical reactions to generate the specific volatile products are proposed.

Keywords

• KN90 gauze mask rope waste
• Thermal degradation
• Pyrolysis kinetics
• Thermodynamic analysis
• Volatile products