Modelling of the Water Absorption Kinetics and Determination of the Water Diffusion Coefficient in the Pith of Raffia vinifera of Bandjoun, Cameroon
The present work focuses on the study of the water absorption phenomenon through the pith of Raffia vinifera along the stem. The water absorption kinetics was studied experimentally by the gravimetric method with the discontinuous control of the sampling mass at temperature of 30°C. The samples of 7...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/1953087 |
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| author | E. Tiaya Mbou E. Njeugna A. Kemajou N. R. Tagne Sikame D. Ndapeu |
| author_facet | E. Tiaya Mbou E. Njeugna A. Kemajou N. R. Tagne Sikame D. Ndapeu |
| author_sort | E. Tiaya Mbou |
| collection | DOAJ |
| description | The present work focuses on the study of the water absorption phenomenon through the pith of Raffia vinifera along the stem. The water absorption kinetics was studied experimentally by the gravimetric method with the discontinuous control of the sampling mass at temperature of 30°C. The samples of 70 mm × 8 mm × 4 mm were taken from twelve sampling zones of the stem of Raffia vinifera. The result shows that the percentage of water absorption of the pith of Raffia vinifera increases from the periphery to the center in the radial position and from the base to the leaves in the longitudinal position. Fick’s second law was adopted for the study of the water diffusion. Eleven models were tested for the modelling of the water absorption kinetics and the model of Sikame Tagne (2014) is the optimal model. The diffusion coefficients of two stages were determined by the solution of the Fick equation in the twelve sampling zones described by Sikame Tagne et al. (2014). The diffusion coefficients decreased from the center to the periphery in the radial position and from the base to the leaves in the longitudinal position. |
| format | Article |
| id | doaj-art-e5ba43cf1af045c3a5ef0f1eaf83a68f |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-e5ba43cf1af045c3a5ef0f1eaf83a68f2025-02-03T06:42:20ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422017-01-01201710.1155/2017/19530871953087Modelling of the Water Absorption Kinetics and Determination of the Water Diffusion Coefficient in the Pith of Raffia vinifera of Bandjoun, CameroonE. Tiaya Mbou0E. Njeugna1A. Kemajou2N. R. Tagne Sikame3D. Ndapeu4Mechanical Laboratory and Adapted Materials (LAMMA) ENSET, University of Douala, P.O. Box 1872, Douala, CameroonMechanical Laboratory and Adapted Materials (LAMMA) ENSET, University of Douala, P.O. Box 1872, Douala, CameroonLaboratory of Energetic (LE) Unit for Physical Doctoral Formation and Engineering Science, University of Douala, Douala, CameroonMechanical Laboratory and Adapted Materials (LAMMA) ENSET, University of Douala, P.O. Box 1872, Douala, CameroonMechanical Laboratory and Adapted Materials (LAMMA) ENSET, University of Douala, P.O. Box 1872, Douala, CameroonThe present work focuses on the study of the water absorption phenomenon through the pith of Raffia vinifera along the stem. The water absorption kinetics was studied experimentally by the gravimetric method with the discontinuous control of the sampling mass at temperature of 30°C. The samples of 70 mm × 8 mm × 4 mm were taken from twelve sampling zones of the stem of Raffia vinifera. The result shows that the percentage of water absorption of the pith of Raffia vinifera increases from the periphery to the center in the radial position and from the base to the leaves in the longitudinal position. Fick’s second law was adopted for the study of the water diffusion. Eleven models were tested for the modelling of the water absorption kinetics and the model of Sikame Tagne (2014) is the optimal model. The diffusion coefficients of two stages were determined by the solution of the Fick equation in the twelve sampling zones described by Sikame Tagne et al. (2014). The diffusion coefficients decreased from the center to the periphery in the radial position and from the base to the leaves in the longitudinal position.http://dx.doi.org/10.1155/2017/1953087 |
| spellingShingle | E. Tiaya Mbou E. Njeugna A. Kemajou N. R. Tagne Sikame D. Ndapeu Modelling of the Water Absorption Kinetics and Determination of the Water Diffusion Coefficient in the Pith of Raffia vinifera of Bandjoun, Cameroon Advances in Materials Science and Engineering |
| title | Modelling of the Water Absorption Kinetics and Determination of the Water Diffusion Coefficient in the Pith of Raffia vinifera of Bandjoun, Cameroon |
| title_full | Modelling of the Water Absorption Kinetics and Determination of the Water Diffusion Coefficient in the Pith of Raffia vinifera of Bandjoun, Cameroon |
| title_fullStr | Modelling of the Water Absorption Kinetics and Determination of the Water Diffusion Coefficient in the Pith of Raffia vinifera of Bandjoun, Cameroon |
| title_full_unstemmed | Modelling of the Water Absorption Kinetics and Determination of the Water Diffusion Coefficient in the Pith of Raffia vinifera of Bandjoun, Cameroon |
| title_short | Modelling of the Water Absorption Kinetics and Determination of the Water Diffusion Coefficient in the Pith of Raffia vinifera of Bandjoun, Cameroon |
| title_sort | modelling of the water absorption kinetics and determination of the water diffusion coefficient in the pith of raffia vinifera of bandjoun cameroon |
| url | http://dx.doi.org/10.1155/2017/1953087 |
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