2023
DOI: 10.1016/j.heliyon.2023.e13518
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Masks thermal degradation as an alternative of waste valorization on the COVID-19 pandemic: A kinetic study

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Cited by 3 publications
(6 citation statements)
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“…Upon analyzing the shredded mask residues (i.e., SMRs) through the lens of the FT-IR spectrum portrayed in Figure 4 , the chemical composition of each layer, predominantly characterized by polypropylene elements, becomes discernibly distinct [ 77 , 78 , 79 ]. The outer layer is imprinted with stretches around 2950 cm −1 , 2917 cm −1 , and 2876 cm −1 , likely corresponding to –CH 3 , –CH 2 , and –CH stretches, respectively.…”
Section: Resultsmentioning
confidence: 99%
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“…Upon analyzing the shredded mask residues (i.e., SMRs) through the lens of the FT-IR spectrum portrayed in Figure 4 , the chemical composition of each layer, predominantly characterized by polypropylene elements, becomes discernibly distinct [ 77 , 78 , 79 ]. The outer layer is imprinted with stretches around 2950 cm −1 , 2917 cm −1 , and 2876 cm −1 , likely corresponding to –CH 3 , –CH 2 , and –CH stretches, respectively.…”
Section: Resultsmentioning
confidence: 99%
“…Delving into the SMR’s TGA profile, as presented in Figure 7 , one discerns three salient stages of weight loss, reflective of its intricate multi-layered and multi-component construct [ 78 , 79 , 83 , 84 ]. The initial phase ( i ), spanning 36.02–364.95 °C, predominantly pertains to the evaporation of superficial moisture and the loss of volatile components embedded within the mask layers.…”
Section: Resultsmentioning
confidence: 99%
“…A change in Gibbs free energy reveals how far the system is from its thermodynamic equilibrium. The ΔG is estimated as 36 (19) where T m is the highest peak decomposition temperature, K B is Boltzmann constant, and h is the Planck's constant, which is equal to 6.626 × 10 −34 J s. Moreover, the frequency factor (A) is computed as 37 (20) The change in enthalpy and entropy of the system are evaluated from the following equations 38,39 (21) (22) ■ RESULTS AND DISCUSSION Thermal Analysis. The TGA technique is used to analyze the thermal properties of various waste plastics.…”
Section: ■ Materials and Methodsmentioning
confidence: 99%
“…This apart, the thermo-kinetics of the enormous medical wastes generated during the COVID outbreak is limited to face masks. 22 However, one needs to comprehensively explore such personal protective kit waste as it is harmful for health and environment. Notably, there are multiple research efforts 10−21 reported on SWPs, but the thermo-kinetics of pyrolysis of actual MWPs collected from landfill sites need to be comprehensively explored.…”
Section: ■ Introductionmentioning
confidence: 99%
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