A comparative study on the efficiency of biochar and iron-modified biochar for Pb-removal from aqueous solutions
Water contamination with potentially toxic elements (PTEs) poses a serious environmental threat. This study explored a sustainable solution for wastewater treatment using biochar derived from sugarcane bagasse. Two types of biochar: regular (BGB) and iron-modified (BGBFe) were tested for Pb(II) remo...
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Taylor & Francis Group
2025-12-01
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| Series: | Water Science |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/23570008.2025.2467358 |
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| author | Hossam S. Jahin Mohamed H. H. Abbas Ihab M. Farid Amany Gameel Mohamed A. Bassouny |
| author_facet | Hossam S. Jahin Mohamed H. H. Abbas Ihab M. Farid Amany Gameel Mohamed A. Bassouny |
| author_sort | Hossam S. Jahin |
| collection | DOAJ |
| description | Water contamination with potentially toxic elements (PTEs) poses a serious environmental threat. This study explored a sustainable solution for wastewater treatment using biochar derived from sugarcane bagasse. Two types of biochar: regular (BGB) and iron-modified (BGBFe) were tested for Pb(II) removal from contaminated water. Scanning electron micrograph spectra of both types of biochars revealed their porous structure. A batch study was conducted to investigate the efficiency of BGBFe and BGB for Pb(II) removal from aqueous solutions over a time period up to 360 min. The results revealed significant differences. Within the first 3 hours, BGB removed over 70% of lead, whereas, BGBFe’s achieved a lower removal rate of only 27%. This suggests that regular biochar (BGB) is a promising option for short-term lead remediation in water. The iron modification (BGBFe) did not enhance lead removal and may not be a suitable strategy. The kinetics of Pb(II) sorption and desorption were investigated using 6 kinetic models. Based on the highest r2 values and the lowest standard error of estimate ones, the kinetics of Pb(II) sorption on BGB biochar was best fitted by the first-order kinetic model. Similarly, Pb(II) desorption on this biochar followed the same kinetic model; however the first-order kinetic constant was approximately 4 times higher in the first phase than in the second one. In contrast, Pb(II) sorption kinetics on BGB-Fe was better described to the power-function model; while the desorption data was suited to the second-order model. In conclusion, BGBFe is not a suitable additive for treating waters contaminated with Pb(II). Regular biochar could be more helpful; but within a time frame not exceeding 3 h. |
| format | Article |
| id | doaj-art-36e21201232f4eecb39a6a08495e7c8c |
| institution | OA Journals |
| issn | 2357-0008 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Water Science |
| spelling | doaj-art-36e21201232f4eecb39a6a08495e7c8c2025-08-20T02:38:05ZengTaylor & Francis GroupWater Science2357-00082025-12-0139117118210.1080/23570008.2025.2467358A comparative study on the efficiency of biochar and iron-modified biochar for Pb-removal from aqueous solutionsHossam S. Jahin0Mohamed H. H. Abbas1Ihab M. Farid2Amany Gameel3Mohamed A. Bassouny4Central Laboratory for Environmental Quality Monitoring, National Water Research Centre, Elkantir, EgyptFaculty of Agriculture, Benha University, Toukh, EgyptFaculty of Agriculture, Benha University, Toukh, EgyptFaculty of Agriculture, Benha University, Toukh, EgyptFaculty of Agriculture, Benha University, Toukh, EgyptWater contamination with potentially toxic elements (PTEs) poses a serious environmental threat. This study explored a sustainable solution for wastewater treatment using biochar derived from sugarcane bagasse. Two types of biochar: regular (BGB) and iron-modified (BGBFe) were tested for Pb(II) removal from contaminated water. Scanning electron micrograph spectra of both types of biochars revealed their porous structure. A batch study was conducted to investigate the efficiency of BGBFe and BGB for Pb(II) removal from aqueous solutions over a time period up to 360 min. The results revealed significant differences. Within the first 3 hours, BGB removed over 70% of lead, whereas, BGBFe’s achieved a lower removal rate of only 27%. This suggests that regular biochar (BGB) is a promising option for short-term lead remediation in water. The iron modification (BGBFe) did not enhance lead removal and may not be a suitable strategy. The kinetics of Pb(II) sorption and desorption were investigated using 6 kinetic models. Based on the highest r2 values and the lowest standard error of estimate ones, the kinetics of Pb(II) sorption on BGB biochar was best fitted by the first-order kinetic model. Similarly, Pb(II) desorption on this biochar followed the same kinetic model; however the first-order kinetic constant was approximately 4 times higher in the first phase than in the second one. In contrast, Pb(II) sorption kinetics on BGB-Fe was better described to the power-function model; while the desorption data was suited to the second-order model. In conclusion, BGBFe is not a suitable additive for treating waters contaminated with Pb(II). Regular biochar could be more helpful; but within a time frame not exceeding 3 h.https://www.tandfonline.com/doi/10.1080/23570008.2025.2467358Leadcontaminated waterbiocharFe enriched biocharsorption/desorption kinetics |
| spellingShingle | Hossam S. Jahin Mohamed H. H. Abbas Ihab M. Farid Amany Gameel Mohamed A. Bassouny A comparative study on the efficiency of biochar and iron-modified biochar for Pb-removal from aqueous solutions Water Science Lead contaminated water biochar Fe enriched biochar sorption/desorption kinetics |
| title | A comparative study on the efficiency of biochar and iron-modified biochar for Pb-removal from aqueous solutions |
| title_full | A comparative study on the efficiency of biochar and iron-modified biochar for Pb-removal from aqueous solutions |
| title_fullStr | A comparative study on the efficiency of biochar and iron-modified biochar for Pb-removal from aqueous solutions |
| title_full_unstemmed | A comparative study on the efficiency of biochar and iron-modified biochar for Pb-removal from aqueous solutions |
| title_short | A comparative study on the efficiency of biochar and iron-modified biochar for Pb-removal from aqueous solutions |
| title_sort | comparative study on the efficiency of biochar and iron modified biochar for pb removal from aqueous solutions |
| topic | Lead contaminated water biochar Fe enriched biochar sorption/desorption kinetics |
| url | https://www.tandfonline.com/doi/10.1080/23570008.2025.2467358 |
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