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Are used face masks handled as infectious waste? Novel pollution driven by the COVID-19 pandemic.
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This study counted 535 improperly discarded face masks along a 1,720-meter stretch across four locations in Ghana during the COVID-19 pandemic. Improper disposal was linked to lack of environmental awareness and poor waste management, with discarded masks releasing microplastics, heavy metals, and potentially pathogens into the environment.
The extensive use of face masks has raised concerns about environmental pollution through improper disposal of used face masks after the emergence of COVID-19. The increasing use of PPEs to preventing the spread of COVID-19 has resulted in several environmental hazards, creating a new environmental barrier for solid waste management and worsened plastic pollution. This study aimed at assessing the occurrence and distribution of face masks in a metropolitan (Adum - Kumasi), municipal (Ejisu), community (Abenase) and an institution (KNUST) in Ghana. The study showed that a total of 535 face masks were numerated along a stretch of 1,720 m with a density ranging from 0.04 m to 0.42 m. A no significant relationship ( = 0.602) was established between the observation distances and the number of waste face masks numerated. The study also showed that for a 1% increase in the number of face masks on working days, there would be a 0.775% increase in non-working days. A review of literature showed that the disposal of used face masks results in the release of micro- and nano-plastics, Pb, Cu, Sb, Zn, Mn, Ti, Fe and Ca into environmental media. Plastic pollution may be a concern to ecosystems due to its persistence in the environment, lack of environmental awareness, sensitization and education, and poor waste management systems. To ensure a sustainable management of waste face masks, significant efforts are needed. These may include proper disposal, redesigning and producing masks from biodegradable materials, incorporating waste face masks into construction materials, and recycling PPE by pyrolyzing are suggested options for the effective management of face masks.
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