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A review of existing methods for predicting leachate production from municipal solid waste landfills

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Abstract

Landfilling is one of the predominant methods of municipal solid waste (MSW) disposal worldwide, while the generation of leachate, a kind of toxic wastewater, is among the primary factors behind landfill instability and environmental contamination problems. Precise prediction of leachate production is crucial to landfill safety evaluation and design. This paper presents a comprehensive review of methods for predicting leachate production from MSW landfills. Firstly, compositional characteristics of MSW and leachate generation mechanism are analysed. Factors influencing leachate production are summarised based on the generation mechanism, including the components of MSW, climatic conditions, landfill structure, and environmental factors. Then, we classified the existing methods for predicting leachate production into four categories: water balance formula, water balance model, empirical formula, and artificial intelligence model methods. Advantages, disadvantages, and applicability of different leachate production prediction methods are compared and analysed. Furthermore, limitations in the existing leachate production prediction methods for MSW landfills and scope for future research are discussed.

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Funding

This work was supported by the National Natural Science Foundation of China (no. 51679197) and Leadership Talent Project of Shanxi Province High-Level Talents Special Support Program in Science and Technology Innovation (no. 2017-TZ0097).

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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Wu Zhou, Junrui Chai, Zengguang Xu, Yuan Qin, Jing Cao, and Pengyuan Zhang. The first draft of the manuscript was written by Wu Zhou, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Junrui Chai.

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Highlights

• Prediction methods for leachate production from municipal solid waste landfills are classified into four categories.

• Advantages and disadvantages of different prediction methods and their applicability are analysed.

• Limitations of existing prediction methods and future research directions are discussed.

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Zhou, W., Chai, J., Xu, Z. et al. A review of existing methods for predicting leachate production from municipal solid waste landfills. Environ Sci Pollut Res 31, 16131–16149 (2024). https://doi.org/10.1007/s11356-024-32289-y

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  • DOI: https://doi.org/10.1007/s11356-024-32289-y

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