International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 9, September 2017

International Journal of Science and Technology

Characterization of Rice Husk via Atomic Absorption Spectrophotometer for Optimal Silica Production

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Author Olawale Olamide , Festus Adekunle Oyawale
On Pages 210-213
Volume No. 2
Issue No. 3
Issue Date April, 2012
Publishing Date April, 2012
Keywords Rice Husk Ash, AAS, Specific Surface Area, Silica


Rice husk is one of the main agricultural wastes in milling processes that is abundantly available in Nigeria. The aim of this research work is characterization of local rice husk and its objective is determination of its chemical constituents using Atomic Absorption Spectrophotometer. Rice husk from two methods were subjected to calcination for temperature range of 50-7500C to determine its characterisation temperature. Characterisation temperature was determined via the temperature at which the highest Specific Surface Area (SSA) and highest amount of silica were observed which was 7000C. Parameters characterized are:Na2O, K 2O,Fe2O3,MnO,CaO,LOI and Specific Surface Area. The results showed that the optimal temperature and maximum amount of silica was 7000C with highest specific surface area. It was also noted that at 7500C, there was decrease in the amount of silica obtained. It was concluded that optimal silica was produced at characterisation temperature of 7000C. This will also reduce the environmental pollution caused by opening burning of rice husk.

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