Extraction of Silica from Cassava Periderm using Modified Sol-Gel Method
Cassava peridem wastes are generated and disposed indiscriminately or burnt due to zero economic value. In this study, modified sol-gel synthesis of amorphous silica nanoparticles from cassava periderm (CP) was investigated. The wastes were pretreated with HCl to remove soluble metallic impurities....
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| Format: | Article |
| Language: | English |
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Faculty of Engineering and Technology
2018-05-01
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| Series: | Nigerian Journal of Technological Development |
| Subjects: | |
| Online Access: | https://journal.njtd.com.ng/index.php/njtd/article/view/165 |
| _version_ | 1818006767129329664 |
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| author | J. A. Adebisi J. O. Agunsoye S. A. Bello M. Haris M. M. Ramakokovhu M. O. Daramola S. B. Hassan |
| author_facet | J. A. Adebisi J. O. Agunsoye S. A. Bello M. Haris M. M. Ramakokovhu M. O. Daramola S. B. Hassan |
| author_sort | J. A. Adebisi |
| collection | DOAJ |
| description |
Cassava peridem wastes are generated and disposed indiscriminately or burnt due to zero economic value. In this study, modified sol-gel synthesis of amorphous silica nanoparticles from cassava periderm (CP) was investigated. The wastes were pretreated with HCl to remove soluble metallic impurities. Both treated and untreated CP flakes were calcined at 700 oC to obtain their respective ashes. The ashes were leached with HCl to remove soluble metallic oxides and thereafter sol-gelled to obtain silica gel modified with ethylene glycol. The gel was dried at 80 oC for 18 hours and then characterized using SEM, EDX, XRD, FT-IR, Raman, TEM and PSA. The SEM micrographs showed that silica modified with ethylene glycol is less agglomerated with higher silica yield and lower particle sizes. All the silica produced showed similar functional groups and non-crystallinity. The silica nanoparticles could be used as starting materials for synthesis of silicon nanoparticles.
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| first_indexed | 2024-04-14T05:05:42Z |
| format | Article |
| id | doaj.art-bf88f14f8f96440fa2ebf0499da887e8 |
| institution | Directory Open Access Journal |
| issn | 2437-2110 |
| language | English |
| last_indexed | 2024-04-14T05:05:42Z |
| publishDate | 2018-05-01 |
| publisher | Faculty of Engineering and Technology |
| record_format | Article |
| series | Nigerian Journal of Technological Development |
| spelling | doaj.art-bf88f14f8f96440fa2ebf0499da887e82022-12-22T02:10:43ZengFaculty of Engineering and TechnologyNigerian Journal of Technological Development2437-21102018-05-01152Extraction of Silica from Cassava Periderm using Modified Sol-Gel MethodJ. A. Adebisi0J. O. Agunsoye1S. A. Bello2M. Haris3M. M. Ramakokovhu4M. O. Daramola5S. B. Hassan6University of Ilorin, NigeriaDepartment of Metallurgical and Materials Engineering, University of Lagos, NigeriaDepartment Materials Science and Engineering, Kwara State University, Malete, NigeriaDepartment of Physics, Karunya University, Karunya Nagar, Coimbatore 641 114, IndiaDepartment of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Pretoria, South AfricaSchool of Chemical and Metallurgical Engineering, Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, South AfricaDepartment of Metallurgical and Materials Engineering, University of Lagos, Nigeria Cassava peridem wastes are generated and disposed indiscriminately or burnt due to zero economic value. In this study, modified sol-gel synthesis of amorphous silica nanoparticles from cassava periderm (CP) was investigated. The wastes were pretreated with HCl to remove soluble metallic impurities. Both treated and untreated CP flakes were calcined at 700 oC to obtain their respective ashes. The ashes were leached with HCl to remove soluble metallic oxides and thereafter sol-gelled to obtain silica gel modified with ethylene glycol. The gel was dried at 80 oC for 18 hours and then characterized using SEM, EDX, XRD, FT-IR, Raman, TEM and PSA. The SEM micrographs showed that silica modified with ethylene glycol is less agglomerated with higher silica yield and lower particle sizes. All the silica produced showed similar functional groups and non-crystallinity. The silica nanoparticles could be used as starting materials for synthesis of silicon nanoparticles. https://journal.njtd.com.ng/index.php/njtd/article/view/165agricultural wastes; cassava periderm; amorphous silica; agglomeration; sol-gel; acid pre-treatment |
| spellingShingle | J. A. Adebisi J. O. Agunsoye S. A. Bello M. Haris M. M. Ramakokovhu M. O. Daramola S. B. Hassan Extraction of Silica from Cassava Periderm using Modified Sol-Gel Method Nigerian Journal of Technological Development agricultural wastes; cassava periderm; amorphous silica; agglomeration; sol-gel; acid pre-treatment |
| title | Extraction of Silica from Cassava Periderm using Modified Sol-Gel Method |
| title_full | Extraction of Silica from Cassava Periderm using Modified Sol-Gel Method |
| title_fullStr | Extraction of Silica from Cassava Periderm using Modified Sol-Gel Method |
| title_full_unstemmed | Extraction of Silica from Cassava Periderm using Modified Sol-Gel Method |
| title_short | Extraction of Silica from Cassava Periderm using Modified Sol-Gel Method |
| title_sort | extraction of silica from cassava periderm using modified sol gel method |
| topic | agricultural wastes; cassava periderm; amorphous silica; agglomeration; sol-gel; acid pre-treatment |
| url | https://journal.njtd.com.ng/index.php/njtd/article/view/165 |
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