• Mahdi Boroujeni, Mohammad Saberian, and Jie Li.
• School of Engineering, RMIT University, Melbourne, Victoria, Australia.
• Environ Sci Pollut Res Int. 2021 Mar 1; 28 (11): 14182-14191.

AbstractThe COVID-19 pandemic not only has created a global health crisis but also has dramatic effects on the environment. To fight the spread of Coronavirus, governments imposed social distancing policies, which caused negative and positive impacts on the environment. Victoria, the second-most populated state in Australia, was hit by two waves of COVID-19. During the second wave of the pandemic, Victoria, especially Melbourne, experienced one of the most stringent and longest lockdowns globally. In this study, the changes in mobility trends, traffic, air pollution, noise pollution, and waste generation during the first and second waves of COVID-19 in Victoria are evaluated and compared. It was observed that the pandemic had both positive and negative impacts on the environment. During the second wave of the pandemic in Victoria, the mobility trends of public transport hubs, retail and recreation venues, and workplaces experienced a significant drop in movements at respective values of 85%, 83%, and 76% compared to the period of 5 weeks from 3 January to 6 February 2020. PM2.5 levels were lower by 23% at Alphington and 24% at Footscray from 16 March to 1 May 2020 compared with the average PM2.5 levels in the past 4 years. It was estimated that the respective daily generations of used face masks during the first wave and second wave of the pandemic in Victoria were approximately 104 and 160 tons.

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