Effect of Kaolin particle size on the removal of Pb(II) from aqueous solutions by Kaolin-supported nanoscale zero-valent iron
The removal of Pb(II) from aqueous solutions was investigated using kaolin with two different particle sizes (2.3 and 45 μ m) with and without nanoscale zero-valent iron (nZVI, at a Fe content close to 30%). The experimental results show that 2.3 μ m kaolin loaded with nZVI (K-nZVI) had the best Pb(...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ab83a3 |
| _version_ | 1797746450876071936 |
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| author | Shang-Qun Li Chuang Yu Ze-Xiang Wu Xiao-Qing Cai Fu-Sheng Zha |
| author_facet | Shang-Qun Li Chuang Yu Ze-Xiang Wu Xiao-Qing Cai Fu-Sheng Zha |
| author_sort | Shang-Qun Li |
| collection | DOAJ |
| description | The removal of Pb(II) from aqueous solutions was investigated using kaolin with two different particle sizes (2.3 and 45 μ m) with and without nanoscale zero-valent iron (nZVI, at a Fe content close to 30%). The experimental results show that 2.3 μ m kaolin loaded with nZVI (K-nZVI) had the best Pb(II) removal performance under various test conditions. After 24 h, it removed 99.5% of Pb(II) ions in the solution, followed by 45 μ m K-nZVI, 2.3 μ m kaolin, and 45 μ m kaolin (89.01%, 68.8%, and 65.8%, respectively). The removal rates by all four kaolin samples increased with increasing pH in the range of 2–6, and with increasing temperature between 30 °C–60 °C. The results show that using finer carrier particles improves the performance of K-nZVI for removing Pb(II) in aqueous solutions. |
| first_indexed | 2024-03-12T15:37:02Z |
| format | Article |
| id | doaj.art-1cff985ef9344d1cb2a00d1c89ceeb15 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:37:02Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
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| series | Materials Research Express |
| spelling | doaj.art-1cff985ef9344d1cb2a00d1c89ceeb152023-08-09T16:08:11ZengIOP PublishingMaterials Research Express2053-15912020-01-017404500210.1088/2053-1591/ab83a3Effect of Kaolin particle size on the removal of Pb(II) from aqueous solutions by Kaolin-supported nanoscale zero-valent ironShang-Qun Li0Chuang Yu1Ze-Xiang Wu2https://orcid.org/0000-0002-1925-4073Xiao-Qing Cai3Fu-Sheng Zha4College of Civil Engineering and Architecture, Wenzhou University , Wenzhou 325035, People’s Republic of ChinaCollege of Civil Engineering and Architecture, Wenzhou University , Wenzhou 325035, People’s Republic of ChinaCollege of Civil Engineering and Architecture, Wenzhou University , Wenzhou 325035, People’s Republic of ChinaCollege of Chemistry and Materials Engineering, Wenzhou University , Wenzhou 325035, People’s Republic of ChinaSchool of Resources and Environmental Engineering, Hefei University of Technology , Hefei 230009, People’s Republic of ChinaThe removal of Pb(II) from aqueous solutions was investigated using kaolin with two different particle sizes (2.3 and 45 μ m) with and without nanoscale zero-valent iron (nZVI, at a Fe content close to 30%). The experimental results show that 2.3 μ m kaolin loaded with nZVI (K-nZVI) had the best Pb(II) removal performance under various test conditions. After 24 h, it removed 99.5% of Pb(II) ions in the solution, followed by 45 μ m K-nZVI, 2.3 μ m kaolin, and 45 μ m kaolin (89.01%, 68.8%, and 65.8%, respectively). The removal rates by all four kaolin samples increased with increasing pH in the range of 2–6, and with increasing temperature between 30 °C–60 °C. The results show that using finer carrier particles improves the performance of K-nZVI for removing Pb(II) in aqueous solutions.https://doi.org/10.1088/2053-1591/ab83a3particle sizeKaolinzero-valent ironadsorptive removal |
| spellingShingle | Shang-Qun Li Chuang Yu Ze-Xiang Wu Xiao-Qing Cai Fu-Sheng Zha Effect of Kaolin particle size on the removal of Pb(II) from aqueous solutions by Kaolin-supported nanoscale zero-valent iron Materials Research Express particle size Kaolin zero-valent iron adsorptive removal |
| title | Effect of Kaolin particle size on the removal of Pb(II) from aqueous solutions by Kaolin-supported nanoscale zero-valent iron |
| title_full | Effect of Kaolin particle size on the removal of Pb(II) from aqueous solutions by Kaolin-supported nanoscale zero-valent iron |
| title_fullStr | Effect of Kaolin particle size on the removal of Pb(II) from aqueous solutions by Kaolin-supported nanoscale zero-valent iron |
| title_full_unstemmed | Effect of Kaolin particle size on the removal of Pb(II) from aqueous solutions by Kaolin-supported nanoscale zero-valent iron |
| title_short | Effect of Kaolin particle size on the removal of Pb(II) from aqueous solutions by Kaolin-supported nanoscale zero-valent iron |
| title_sort | effect of kaolin particle size on the removal of pb ii from aqueous solutions by kaolin supported nanoscale zero valent iron |
| topic | particle size Kaolin zero-valent iron adsorptive removal |
| url | https://doi.org/10.1088/2053-1591/ab83a3 |
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