Extraction of Silica from Sugarcane Bagasse, Cassava Periderm and Maize Stalk: Proximate Analysis and Physico-Chemical Properties of Wastes
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Date
2017
Authors
Adebisi, J.A.
Agunsoye, J.O.
Bello, S.A.
Kolawole, F.O.
Ramakokovhu, M.M.
Daramola, M.O.
Hassan, S.B.
Journal Title
Journal ISSN
Volume Title
Publisher
Waste Biomass Valor
Abstract
Indiscriminate disposal and burning of agricultural wastes constitute environmental pollution and increase
in greenhouse gases emission. Renewable nature and availability of agricultural wastes has stimulated researchers to
explore “wastes to wealth creation” policy. Three agricultural wastes were investigated for potential use for silica
production. Proximate analysis, thermogravimetric analysis
(TGA), compositional analysis, calcination and statistical
analysis were carried out to quantify the ash and establish
presence of silica. Response surface methodology was used
for statistical analysis of CP calcination. The proximate analysis showed that sugarcane bagasse, cassava periderm and
maize stalk ash contents are 1.73, 4.93 and 4.80%, respectively. The EDS results showed that their ashes contain 5.22, 6.10 and 7.01% silicon, respectively. XRF results revealed
presence of 38% SiO2 in CP ash. XRD revealed presence of
silica and silicates phases. TGA shows that their calcination
temperature must be above 500 °C. Numerical optimization
of CP calcination gave optimum condition of 700 °C for
270 min to attain 82% weight loss. Calcination regression
equation exhibited high coefficient of determination (R2) of
0.8225. The three wastes contain silica and silicates from
which silica could be extracted. Calcination temperature and
time have been established to be significant in ash content
enhancement.
Description
Keywords
Proximate analysis · Calcination · Agricultural wastes · Cassava periderm · Maize stalk · Sugarcane bagasse
Citation
Adebisi, J.A. Agunsoye, J.O. Bello, S.A. Kolawole, F.O. Ramakokovhu, M.M. Daramola, M.O. Hassan, S.B. (2017). Extraction of Silica from Sugarcane Bagasse, Cassava Periderm and Maize Stalk: Proximate Analysis and Physico-Chemical Properties of Wastes. Waste Biomass Valor