Abstract
Landfill leachate and domestic sewage decompose and react with the silty clay liner when there is seepage of waste. Municipal waste contaminants have important impacts on the leachate and chemical reaction, and therefore, the interactive effect of municipal waste seepage and chemical reaction on the changes in the properties of silty clay. In this study, acetic acid (CH3COOH) and calcium carbonate (Ca-CO3) are used as the seepage fluids to examine the chemical interaction between the leachate and the changes in silty clay and provide a better understanding of the changes due to the interactive effect of municipal waste seepage and chemical reaction on the changes in the properties of silty clay as well as the interactive process. The results show that the interactive process of municipal waste seepage and chemical reaction can be primarily examined as three stages: seepage, mixing of the leachate and silty clay, and chemical contamination. Among the many factors, the type of seepage medium has the most impact on the silty clay properties in terms of the interactive effect between municipal waste seepage and chemical reaction.
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Acknowledgements
This study is supported by the National Natural Science Foundation of China (No. 41972281, 41372326, 41072236), the Fundamental Research Funds for the Central Universities (2014ZDPY27), and A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.
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Guo, Y.L., Cao, L.W., Feng, X.H. et al. Study on interactive effect of waste seepage and chemical reaction on changes in properties of silty clay. Int. J. Environ. Sci. Technol. 19, 8255–8264 (2022). https://doi.org/10.1007/s13762-021-03697-1
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DOI: https://doi.org/10.1007/s13762-021-03697-1