Extraction of Silica from Cassava Periderm using Modified Sol-Gel Method
No Thumbnail Available
Date
2018
Authors
Adebisi, J.A.
Agunsoye, J.O.
Bello, S.A.
Haris, M.
Ramakokovhu, M.M.
Daramola, M.O.
Hassan, S.B.
Journal Title
Journal ISSN
Volume Title
Publisher
Nigerian Journal of Technological Development
Abstract
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
Description
Keywords
agricultural waste, cassava periderm, amorphous silica, agglomeration, sol-gel.
Citation
Adebisi, J.A. Agunsoye, J.O. Bello, S.A. Haris, M. Ramakokovhu, M.M. Daramola, M.O. Hassan, S.B. (2018). Extraction of Silica from Cassava Periderm using Modified Sol-Gel Method. Nigerian Journal of Technological Development; 15(2): 57-65