Journal
ENERGY
Volume 230, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2021.120876
Keywords
Thermochemical pathway; Pyrolysis; Co-feeding; Disposable waste; Municipal solid waste (MSW); Waste valorization
Categories
Funding
- National Research Foundation of Korea (NRF) - Korean Government (Ministry of Science and ICT) [NRF-2020R1C1C1003225]
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The study focused on the co-pyrolysis of single-use face masks and food waste for energy and resource valorization. Pyrolysis of the face masks produced fuel-range chemicals and primarily non-condensable hydrocarbons. Adding food waste led to char formation without affecting the properties of the char, increasing H2 production and decreasing hydrocarbon yields during co-feeding pyrolysis.
In this study, co-pyrolysis of single-use face mask (for the protection against COVID-19) and food waste was investigated for the purpose of energy and resource valorization of the waste materials. To this end, disposable face mask (a piece of personal protective equipment) was pyrolyzed to produce fuel-range chemicals. The pyrolytic gas evolved from the pyrolysis of the single-use face mask consisted primarily of non-condensable permanent hydrocarbons such as CH4, C2H4, C2H6, C3H6, and C3H8. An increase in pyrolysis temperature enhanced the non-condensable hydrocarbon yields. The pyrolytic gas had a HHV of >40 MJ kg(-1). In addition, hydrocarbons with wider carbon number ranges (e.g., gasoline-, jet fuel-, diesel-, and motor oil-range hydrocarbons) were produced in the pyrolysis of the disposable face mask. The yields of the gasoline-, jet fuel-, and diesel-range hydrocarbons obtained from the single-use mask were highest at 973 K. The pyrolysis of the single-use face mask yielded 14.7 wt% gasoline-, 18.4 wt% jet fuel-, 34.1 wt% diesel-, and 18.1 wt% motor oil-range hydrocarbons. No solid char was produced via the pyrolysis of the disposable face mask. The addition of food waste to the pyrolysis feedstock led to the formation of char, but the presence of the single-use face mask did not affect the properties and energy content of the char. More H2 and less hydrocarbons were produced by co-feeding food waste in the pyrolysis of the disposable face mask. The results of this study can contribute to thermochemical management and utilization of everyday waste as a source of energy. (C) 2021 Elsevier Ltd. All rights reserved.Y
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