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|Title:||Production of oxalic acid from sawdust using coal fly ash as a catalyst|
Kuipa, Pardon K.
|Series/Report no.:||SN Applied Sciences;|
|Abstract:||The production of oxalic acid from sawdust using a mixture of strong nitric acid and concentrated sulphuric acid with coal fly ash as a catalyst has been explored. Operating parameters affecting the reaction were determined to be temperature, mesh size and amount of fly ash catalyst, time and the HNO3 ∶ H2SO4 ratio. A maximum oxalic acid yield of 84% was obtained using a mixture of 60% HNO3 and 40% H2SO4 at 70 °C and a reaction time of 150 minutes. Coal fly ash with particle size of 50–100 μm proved to be a suitable and efficient catalyst, and the optimum quantity of catalyst employed was 5g of fly ash for every 100g of sawdust.|
|Appears in Collections:||Department of Crop and Soil Science|
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