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Forecasting global plastic production and microplastic emission using advanced optimised discrete grey model

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Abstract

Plastic pollution has become a prominent and pressing environmental concern within the realm of pollution. In recent times, microplastics have entered our ecosystem, especially in freshwater. In the contemporary global landscape, there exists a mounting apprehension surrounding the manifold environmental and public health issues that have emerged as a result of the substantial accumulation of microplastics. The objective of the current study is to employ an enhanced grey prediction model in order to forecast global plastic production and microplastic emissions. This study compared the accuracy level of the four grey prediction models, namely, EGM (1,1, α, θ), DGM (1,1), EGM (1,1), and DGM (1,1, α) models, to evaluate the accuracy levels. As per the estimation of the study, DGM (1,1, α) was found to be more suitable with higher accuracy levels to predict microplastic emission. The EGM (1,1, α, θ) model has slightly better accuracy than the DGM (1,1, α) model in predicting global plastic production. Various accuracy measurement tools (MAPE and RMSE) were used to determine the model’s efficiency. There has been a gradual growth in both plastic production and microplastic emission. The current study using the DGM (1,1, α) model predicted that microplastic emission would be 1,084,018 by 2030. The present study aims to provide valuable insights for policymakers in formulating effective strategies to address the complex issues arising from the release of microplastics into the environment and the continuous production of plastic materials.

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Source: plastic production worldwide (2021), www.statista.com

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Data availability

The data that support the findings of this study are openly available on World Development Indicators | Data Bank 2022 (worldbank.org).

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Acknowledgements

The authors express their gratitude to the editorial board and reviewer for the efforts for suggestion and reviewing this paper. The authors also appreciate the editor for his cooperation during the review process.

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Conceptualization, results writing, and data analysis: Dr. Pawan Kumar Singh, Dr. Alok Kumar Pandey, and Dr. Aditya Kumar Sharma; introduction and literature review: Dr. Bhartendu Kumar Chaturvedi and Dr. Subhra Rajat Balabantaray.

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Correspondence to Pawan Kumar Singh.

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Balabantaray, S.R., Singh, P.K., Pandey, A.K. et al. Forecasting global plastic production and microplastic emission using advanced optimised discrete grey model. Environ Sci Pollut Res 30, 123039–123054 (2023). https://doi.org/10.1007/s11356-023-30799-9

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  • DOI: https://doi.org/10.1007/s11356-023-30799-9

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