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Oduola, M. K.
- Mathematical Model of Thin-Layer Drying Process in a Plantain Sample
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Authors
Affiliations
1 Department of Chemical Engineering, University of Port Harcourt, NG
1 Department of Chemical Engineering, University of Port Harcourt, NG
Source
International Journal of Engineering Research, Vol 5, No 5 (2016), Pagination: 364-366Abstract
This research was focused on the selection of the appropriate thin-layer models that best described the drying characteristics of the French horn plantain used in the experiment. The drying of the 5mm thickness size plantain samples occurred at 40°C, 50°C, 60°C and 70°C temperatures until the equilibrium condition was attained. The experimental moisture ratio values at each temperature were fitted to Lewis, Page and Modified-page thin-layer models. The Lewis model has average chi square and average coefficient of determination of 0.0012 and 0.9802 respectively while Modified Page has 0.0009 and 0.9879 respectively. The results show that Page model has the least average chi-square (Χ2) value and highest coefficient of determination (R2) value of 0.0008 and 0.9922 respectively. Therefore, Page model best described the drying characteristics of the plantain sample within 40°C- 70°C temperature range.Keywords
Drying, Thin-Layer Models, Moisture Ratio, Chi-Square, Coefficient of Determination.Full Text
- Determination of Thin-Layer Drying Characteristics of a Plantain Sample at Different Temperatures
Abstract Views :140 |
PDF Views:0
Authors
Affiliations
1 Department of Chemical Engineering, University of Port Harcourt, NG
1 Department of Chemical Engineering, University of Port Harcourt, NG
Source
International Journal of Engineering Research, Vol 5, No 5 (2016), Pagination: 367-372Abstract
The thin-layer drying characteristics of plantain was analysed at different temperatures. The plantain sample was sliced to 5mm thickness size and dried at 40°C, 50°C, 60°C and 70°C. The moisture content (dry basis), moisture ratio, effective diffusivity and activation energy were determined within the temperature range. The moisture content of cooking plantain on dry basis was found to be 1.70g moisture/g dry sample at the beginning of the drying. The highest moisture removal of 1.58g/g dry sample occurred at the 70°C drying temperature. The effective diffusivity obtained from the experimental data is within the range 2.85x10-10-6.65×10-10m2/s while the activation energy is 476.54J/smol. The rate of moisture removal, moisture ratio slope, effective diffusivity and activation energy values obtained from the experimental values increase with the drying temperature.Keywords
Cooking Plantain, Thin-Layer, Drying, Moisture Content, Moisture Ratio, Effective Diffusivity, Activation Energy.Full Text