Evaluating the effectiveness of sulfidated nano zerovalent iron and sludge co-application for reducing metal mobility in contaminated soil
Abstract Sewage sludge has long been applied to soils as a fertilizer yet may be enriched with leachable metal(loid)s and other pollutants. Sulfidated nanoscale zerovalent iron (S-nZVI) has proven effective at metal sorption; however, risks associated with the use of engineered nanoparticles cannot...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-04-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-59059-7 |
| _version_ | 1797209422249852928 |
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| author | Omolola Ojo Zuzana Vaňková Luke Beesley Niluka Wickramasinghe Michael Komárek |
| author_facet | Omolola Ojo Zuzana Vaňková Luke Beesley Niluka Wickramasinghe Michael Komárek |
| author_sort | Omolola Ojo |
| collection | DOAJ |
| description | Abstract Sewage sludge has long been applied to soils as a fertilizer yet may be enriched with leachable metal(loid)s and other pollutants. Sulfidated nanoscale zerovalent iron (S-nZVI) has proven effective at metal sorption; however, risks associated with the use of engineered nanoparticles cannot be neglected. This study investigated the effects of the co-application of composted sewage sludge with S-nZVI for the stabilization of Cd, Pb, Fe, Zn. Five treatments (control, Fe grit, composted sludge, S-nZVI, composted sludge and S-nZVI), two leaching fluids; synthetic precipitation leaching procedure (SPLP) and toxicity characteristic leaching procedure (TCLP) fluid were used, samples were incubated at different time intervals of 1 week, 1, 3, and 6 months. Fe grit proved most efficient in reducing the concentration of extractable metals in the batch experiment; the mixture of composted sludge and S-nZVI was the most effective in reducing the leachability of metals in the column systems, while S-nZVI was the most efficient for reducing about 80% of Zn concentration in soil solution. Thus, the combination of two amendments, S-nZVI incorporated with composted sewage sludge and Fe grit proved most effective at reducing metal leaching and possibly lowering the associated risks. Future work should investigate the longer-term efficiency of this combination. |
| first_indexed | 2024-04-24T09:54:27Z |
| format | Article |
| id | doaj.art-8a50a77492aa4218907104bed071fb81 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-24T09:54:27Z |
| publishDate | 2024-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-8a50a77492aa4218907104bed071fb812024-04-14T11:13:27ZengNature PortfolioScientific Reports2045-23222024-04-0114111110.1038/s41598-024-59059-7Evaluating the effectiveness of sulfidated nano zerovalent iron and sludge co-application for reducing metal mobility in contaminated soilOmolola Ojo0Zuzana Vaňková1Luke Beesley2Niluka Wickramasinghe3Michael Komárek4Department of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences PragueDepartment of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences PragueDepartment of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences PragueDepartment of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences PragueDepartment of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences PragueAbstract Sewage sludge has long been applied to soils as a fertilizer yet may be enriched with leachable metal(loid)s and other pollutants. Sulfidated nanoscale zerovalent iron (S-nZVI) has proven effective at metal sorption; however, risks associated with the use of engineered nanoparticles cannot be neglected. This study investigated the effects of the co-application of composted sewage sludge with S-nZVI for the stabilization of Cd, Pb, Fe, Zn. Five treatments (control, Fe grit, composted sludge, S-nZVI, composted sludge and S-nZVI), two leaching fluids; synthetic precipitation leaching procedure (SPLP) and toxicity characteristic leaching procedure (TCLP) fluid were used, samples were incubated at different time intervals of 1 week, 1, 3, and 6 months. Fe grit proved most efficient in reducing the concentration of extractable metals in the batch experiment; the mixture of composted sludge and S-nZVI was the most effective in reducing the leachability of metals in the column systems, while S-nZVI was the most efficient for reducing about 80% of Zn concentration in soil solution. Thus, the combination of two amendments, S-nZVI incorporated with composted sewage sludge and Fe grit proved most effective at reducing metal leaching and possibly lowering the associated risks. Future work should investigate the longer-term efficiency of this combination.https://doi.org/10.1038/s41598-024-59059-7 |
| spellingShingle | Omolola Ojo Zuzana Vaňková Luke Beesley Niluka Wickramasinghe Michael Komárek Evaluating the effectiveness of sulfidated nano zerovalent iron and sludge co-application for reducing metal mobility in contaminated soil Scientific Reports |
| title | Evaluating the effectiveness of sulfidated nano zerovalent iron and sludge co-application for reducing metal mobility in contaminated soil |
| title_full | Evaluating the effectiveness of sulfidated nano zerovalent iron and sludge co-application for reducing metal mobility in contaminated soil |
| title_fullStr | Evaluating the effectiveness of sulfidated nano zerovalent iron and sludge co-application for reducing metal mobility in contaminated soil |
| title_full_unstemmed | Evaluating the effectiveness of sulfidated nano zerovalent iron and sludge co-application for reducing metal mobility in contaminated soil |
| title_short | Evaluating the effectiveness of sulfidated nano zerovalent iron and sludge co-application for reducing metal mobility in contaminated soil |
| title_sort | evaluating the effectiveness of sulfidated nano zerovalent iron and sludge co application for reducing metal mobility in contaminated soil |
| url | https://doi.org/10.1038/s41598-024-59059-7 |
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