Modeling and optimization of silica production from maize husk

Raphael, O. D. and Akinyemi, Banjo and OGUNSEMI, B.T. and Ogundipe, S. J. and Abayomi, S. T. (2019) Modeling and optimization of silica production from maize husk. International Journal of Mechanical Engineering and Technology (IJMET), 10 (1). pp. 755-764. ISSN 0976-6340; 0976-6359

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Maize Cobhas been usedfor silica production but no research had been reported on the optimization of maize husk for silica production. This studyisaimed atdevelopingan approach for the optimization of silica production from Maize Husk (MH) usingResponse Surface Methodology(RSM). The MH was analyzed for crude fiber (CF), crude protein (CP) and ash constituents using standardmethod. The MH (30kg) was run using Box Behnken Design to determine the experimental combinations of the predictor variables: Temperature (400-700 ºC), Time (2-6 h) and MH (5-7 g). Optimalprocess variables predicted werevalidated by confirmatory experiments. The silica produced was characterized usingFourier Transform Infrared Spectroscopy (FTIR). The CF, CP and ash content were 1.52, 10 and 1.5 % respectively. The optimal values of the variables from the RSM, namely: temperature, time and MH were 528 ºC, 5.31 hrand5.85g. There was no significant differencebetween the values obtained from RSM and that of the validation.FTIR showed noticeable absorption peaks attributed to O-Si-O stretching. It can be concluded that maize husk which is an agricultural waste is a viable product for silica production.

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
Date Deposited: 09 May 2019 14:02
Last Modified: 13 Sep 2019 10:33

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