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Face masks: a COVID-19 protector or environmental contaminant?

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Abstract

Face masks, a prime component of personal protective equipment (PPE) items, have become an integral part of human beings to survive under the ongoing COVID-19 pandemic situation. The global population requires an estimated 130 billion face masks and 64 billion gloves/month, while the COVID-19 pandemic has led to the daily disposal of approximately 3.5 billion single-use face masks, resulting in a staggering 14,245,230.63 kg of face mask waste. The improper disposal of face mask wastes followed by its mismanagement is a challenge to the scientists as the wastes create pollution leading to environmental degradation, especially plastic pollution (macro/meso/micro/nano). Each year, an estimated 0.15–0.39 million tons of COVID-19 face mask waste, along with 173,000 microfibers released daily from discarded surgical masks, could enter the marine environment, while used masks have a significantly higher microplastic release capacity (1246.62 ± 403.50 particles/piece) compared to new masks (183.00 ± 78.42 particles/piece). Surgical face masks emit around 59 g CO2-eq greenhouse gas emissions per single use, cloth face masks emit approximately 60 g CO2-eq/single mask, and inhaling or ingesting microplastics (MPs) caused adverse health problems including chronic inflammation, granulomas or fibrosis, DNA damage, cellular damage, oxidative stress, and cytokine secretion. The present review critically addresses the role of face masks in reducing COVID-19 infections, their distribution pattern in diverse environments, the volume of waste produced, degradation in the natural environment, and adverse impacts on different environmental segments, and proposes sustainable remediation options to tackle environmental challenges posed by disposable COVID-19 face masks.

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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Palas Samanta, Sukhendu Dey, Deblina Dutta, and Debajyoti Kundu. The first draft of the manuscript was written by Palas Samanta, Sukhendu Dey, Deblina Dutta, and Debajyoti Kundu, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript. Apurba Ratan Ghosh and Sunil Kumar involved in review and editing and supervision.

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Correspondence to Sunil Kumar.

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Dey, S., Samanta, P., Dutta, D. et al. Face masks: a COVID-19 protector or environmental contaminant?. Environ Sci Pollut Res 30, 93363–93387 (2023). https://doi.org/10.1007/s11356-023-29063-x

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  • DOI: https://doi.org/10.1007/s11356-023-29063-x

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