Removal of Pb(II) from Aqueous Solutions with Manganese Oxide-Modified Diatomite
In the present work, natural diatomite modified with manganese oxide (MnO2) was prepared via direct redox reaction with KMnO4 and HCl. The product was characterized by using X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, en...
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| Format: | Article |
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SAGE Publishing
2023-01-01
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| Series: | Adsorption Science & Technology |
| Online Access: | http://dx.doi.org/10.1155/2023/7744896 |
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| author | Huynh Thanh Danh Nguyen Thi Truc Ly Vanthan Nguyen Dinh Quang Khieu Pham Dinh Du |
| author_facet | Huynh Thanh Danh Nguyen Thi Truc Ly Vanthan Nguyen Dinh Quang Khieu Pham Dinh Du |
| author_sort | Huynh Thanh Danh |
| collection | DOAJ |
| description | In the present work, natural diatomite modified with manganese oxide (MnO2) was prepared via direct redox reaction with KMnO4 and HCl. The product was characterized by using X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray, and nitrogen adsorption-desorption isotherms. It was found that the nanorod manganese oxide was highly dispersed onto the diatomite porous matrix. The specific surface area of the obtained manganese oxide/diatomite (SBET=68.5 m2 g−1) is larger than that of natural diatomite (SBET=55.4 m2 g−1). It was utilized to remove Pb(II) in aqueous solutions. It exhibits an excellent Pb(II) adsorption capacity. The adsorption data fits well with the pseudo-second-order kinetics model, and the adsorption process is endothermic and spontaneous with an activation energy of 41.56 kJ mol−1 and follows the Freundlich isotherm model. The Mn/diatomite adsorption capacity for Pb(II) is 81.42 mg g−1, calculated with the Langmuir model. In addition, the adsorption mechanism of Pb(II) onto Mn/diatomite is also addressed. |
| format | Article |
| id | doaj-art-6ecb5c5d9a534f4293655e189cb06012 |
| institution | Kabale University |
| issn | 2048-4038 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-6ecb5c5d9a534f4293655e189cb060122025-01-02T23:11:38ZengSAGE PublishingAdsorption Science & Technology2048-40382023-01-01202310.1155/2023/7744896Removal of Pb(II) from Aqueous Solutions with Manganese Oxide-Modified DiatomiteHuynh Thanh Danh0Nguyen Thi Truc Ly1Vanthan Nguyen2Dinh Quang Khieu3Pham Dinh Du4Giong Rieng High SchoolTan Hiep High SchoolFaculty of Automotive EngineeringUniversity of SciencesThu Dau Mot UniversityIn the present work, natural diatomite modified with manganese oxide (MnO2) was prepared via direct redox reaction with KMnO4 and HCl. The product was characterized by using X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray, and nitrogen adsorption-desorption isotherms. It was found that the nanorod manganese oxide was highly dispersed onto the diatomite porous matrix. The specific surface area of the obtained manganese oxide/diatomite (SBET=68.5 m2 g−1) is larger than that of natural diatomite (SBET=55.4 m2 g−1). It was utilized to remove Pb(II) in aqueous solutions. It exhibits an excellent Pb(II) adsorption capacity. The adsorption data fits well with the pseudo-second-order kinetics model, and the adsorption process is endothermic and spontaneous with an activation energy of 41.56 kJ mol−1 and follows the Freundlich isotherm model. The Mn/diatomite adsorption capacity for Pb(II) is 81.42 mg g−1, calculated with the Langmuir model. In addition, the adsorption mechanism of Pb(II) onto Mn/diatomite is also addressed.http://dx.doi.org/10.1155/2023/7744896 |
| spellingShingle | Huynh Thanh Danh Nguyen Thi Truc Ly Vanthan Nguyen Dinh Quang Khieu Pham Dinh Du Removal of Pb(II) from Aqueous Solutions with Manganese Oxide-Modified Diatomite Adsorption Science & Technology |
| title | Removal of Pb(II) from Aqueous Solutions with Manganese Oxide-Modified Diatomite |
| title_full | Removal of Pb(II) from Aqueous Solutions with Manganese Oxide-Modified Diatomite |
| title_fullStr | Removal of Pb(II) from Aqueous Solutions with Manganese Oxide-Modified Diatomite |
| title_full_unstemmed | Removal of Pb(II) from Aqueous Solutions with Manganese Oxide-Modified Diatomite |
| title_short | Removal of Pb(II) from Aqueous Solutions with Manganese Oxide-Modified Diatomite |
| title_sort | removal of pb ii from aqueous solutions with manganese oxide modified diatomite |
| url | http://dx.doi.org/10.1155/2023/7744896 |
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