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A microcosm experiment on sediment remediation: microbial community assessment in sediment in presence of granulated coal ash

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Abstract

Coastal areas contain buildup of mixed organic and inorganic contaminants, which promote deterioration or sediment and impairment of benthic life. Hence, it is necessary to develop a method for sediment remediation and to promote the ecosystem. In this study, Granulated Coal Ash (GCA) was used as a covering material for the remediation of sediment. Our results indicate an increase in pH and oxidation–reduction potential, as well as a decrease in the concentrations of phosphate and hydrogen sulfide in the sediment and overlying water. The top three phyla observed based on 16S rRNA gene amplicon sequencing were Proteobacteria, Bacteroidetes, and Firmicutes. Further, as a consequence of physicochemical changes in the sediments, we observed a significant change in the relative abundance of Deltaproteobacteria, Epsilonproteobacteria, and Gammaproteobacteria. In conclusion, GCA is a promising covering material for limiting contaminants in sediment and overlying water, and promoting the diversity of microbial populations for sediment remediation.

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Data availability

The 16S rRNA gene amplicon sequences data supporting this study’s findings are openly available in NCBI (http://www.ncbi.nlm.nih.gov/) under the BioProject, and Sequence Read Archive (SRA) numbers are PRJNA796724, and SRP354823, respectively.

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Acknowledgments

This research was financially supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (Grant No. 2021R1I1A306037411).

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Contributions

Conceptualization was contributed by MPP, J-OK, and KK; Methodology was contributed by MPP, J-OK, and KK; Formal analysis was contributed by MPP, H-EW, I-CL and J-OK; data curation, visualization and interpretation were contributed by MPP, H-EW, I-CL; writing—original draft was contributed by MPP; writing—review and editing was contributed by MPP, H-EW, I-CL, and J-OK, and KK; supervision and funding acquisition were contributed by KK. All authors reviewed and agreed to publish the manuscript.

Corresponding author

Correspondence to K. Kim.

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On behalf of all the authors, the corresponding author states that there are no conflicts of interest.

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Editorial responsibility: Jing Chen.

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Patil, M.P., Woo, HE., Lee, IC. et al. A microcosm experiment on sediment remediation: microbial community assessment in sediment in presence of granulated coal ash. Int. J. Environ. Sci. Technol. 20, 13319–13328 (2023). https://doi.org/10.1007/s13762-023-04887-9

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  • DOI: https://doi.org/10.1007/s13762-023-04887-9

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