Development of a pilot scale energy efficient flash dryer for cassava flour
Cassava’s transformation into an industrial raw material necessitates new processing techniques that improve quality while lowering processing costs. Drying has been identified as a major bottleneck in the production of high-quality cassava flour (HQCF) and expansion of its industrial application in...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Resources, Environment and Sustainability |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666916123000105 |
| _version_ | 1827868370810175488 |
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| author | Suraju A. Adegbite Wahabi B. Asiru Murat Sartas Thierry Tran Alejandro L. Taborda Arnaud Chapuis Makuachwuku Ojide Adebayo Abass |
| author_facet | Suraju A. Adegbite Wahabi B. Asiru Murat Sartas Thierry Tran Alejandro L. Taborda Arnaud Chapuis Makuachwuku Ojide Adebayo Abass |
| author_sort | Suraju A. Adegbite |
| collection | DOAJ |
| description | Cassava’s transformation into an industrial raw material necessitates new processing techniques that improve quality while lowering processing costs. Drying has been identified as a major bottleneck in the production of high-quality cassava flour (HQCF) and expansion of its industrial application in Sub-Sahara African. This has triggered efforts towards developing an energy-efficient flash dryer for cassava flour/starch production at a small scale. A scaled-up version of the prototype flash dryer installed at the International Center for Tropical Agriculture (CIAT), Cali, Colombia, was built at the Federal Institute of Industrial Research, Oshodi, (FIIRO), Lagos, Nigeria based on numerical modeling. Excel tools developed by the CGIAR (RTB) scientists were used to design the components and built using locally sourced materials. The automation system of the flash dryer allows for operational flexibility, increased energy efficiency and reduced cost. It features a longer drying tube (22.5 m), a compact and improved heat exchanger, a larger blower for higher air velocity, and a high air/product ratio, thereby optimizing the drying efficiency. The dryer was evaluated with mechanically dewatered cassava mash (wet cake) dried into high quality cassava flour at air temperature of 180 °C and velocity of 13 m/s. The initial moisture content of the wet cake was 47.06 % wb, which was reduced to 9.6 % wb of dried product. Using a capacity of 298.0 kg of wet cake per hour, an output of 186.34 kg of dried product was achieved, resulting in an energy efficiency of 80.8 % and specific energy consumption of 2570 kJ/kg product of final product and 4560 kJ/kg water of evaporated water. These results revealed that the dryer is efficient and suitable for small-scale enterprises. Its use can reduce the production costs and expand the global market opportunity for cassava flour. |
| first_indexed | 2024-03-12T15:30:45Z |
| format | Article |
| id | doaj.art-a7d1ee735cfc4090a38c0915abb6f292 |
| institution | Directory Open Access Journal |
| issn | 2666-9161 |
| language | English |
| last_indexed | 2024-03-12T15:30:45Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Resources, Environment and Sustainability |
| spelling | doaj.art-a7d1ee735cfc4090a38c0915abb6f2922023-08-10T04:34:59ZengElsevierResources, Environment and Sustainability2666-91612023-09-0113100117Development of a pilot scale energy efficient flash dryer for cassava flourSuraju A. Adegbite0Wahabi B. Asiru1Murat Sartas2Thierry Tran3Alejandro L. Taborda4Arnaud Chapuis5Makuachwuku Ojide6Adebayo Abass7Federal Institute of Industrial Research Oshodi (FIIRO), Lagos, Nigeria; Corresponding author.Federal Institute of Industrial Research Oshodi (FIIRO), Lagos, NigeriaInternational Institute of Tropical Agriculture (IITA), CGIAR Research Program on Roots Tubers and Bananas (RTB), NigeriaInternational Center for Tropical Agriculture (CIAT), Cali, ColombiaInternational Center for Tropical Agriculture (CIAT), Cali, ColombiaQualisud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France; CIRAD, UMR QualiSud, SénégalAlex Ekwueme Federal University Ndufu-Alike (AE-FUNAI), Ebonyi State, NigeriaInternational Institute of Tropical Agriculture (IITA), CGIAR Research Program on Roots Tubers and Bananas (RTB), NigeriaCassava’s transformation into an industrial raw material necessitates new processing techniques that improve quality while lowering processing costs. Drying has been identified as a major bottleneck in the production of high-quality cassava flour (HQCF) and expansion of its industrial application in Sub-Sahara African. This has triggered efforts towards developing an energy-efficient flash dryer for cassava flour/starch production at a small scale. A scaled-up version of the prototype flash dryer installed at the International Center for Tropical Agriculture (CIAT), Cali, Colombia, was built at the Federal Institute of Industrial Research, Oshodi, (FIIRO), Lagos, Nigeria based on numerical modeling. Excel tools developed by the CGIAR (RTB) scientists were used to design the components and built using locally sourced materials. The automation system of the flash dryer allows for operational flexibility, increased energy efficiency and reduced cost. It features a longer drying tube (22.5 m), a compact and improved heat exchanger, a larger blower for higher air velocity, and a high air/product ratio, thereby optimizing the drying efficiency. The dryer was evaluated with mechanically dewatered cassava mash (wet cake) dried into high quality cassava flour at air temperature of 180 °C and velocity of 13 m/s. The initial moisture content of the wet cake was 47.06 % wb, which was reduced to 9.6 % wb of dried product. Using a capacity of 298.0 kg of wet cake per hour, an output of 186.34 kg of dried product was achieved, resulting in an energy efficiency of 80.8 % and specific energy consumption of 2570 kJ/kg product of final product and 4560 kJ/kg water of evaporated water. These results revealed that the dryer is efficient and suitable for small-scale enterprises. Its use can reduce the production costs and expand the global market opportunity for cassava flour.http://www.sciencedirect.com/science/article/pii/S2666916123000105Flash dryerEnergy efficiencySpecific energy consumptionHigh quality cassava flour |
| spellingShingle | Suraju A. Adegbite Wahabi B. Asiru Murat Sartas Thierry Tran Alejandro L. Taborda Arnaud Chapuis Makuachwuku Ojide Adebayo Abass Development of a pilot scale energy efficient flash dryer for cassava flour Resources, Environment and Sustainability Flash dryer Energy efficiency Specific energy consumption High quality cassava flour |
| title | Development of a pilot scale energy efficient flash dryer for cassava flour |
| title_full | Development of a pilot scale energy efficient flash dryer for cassava flour |
| title_fullStr | Development of a pilot scale energy efficient flash dryer for cassava flour |
| title_full_unstemmed | Development of a pilot scale energy efficient flash dryer for cassava flour |
| title_short | Development of a pilot scale energy efficient flash dryer for cassava flour |
| title_sort | development of a pilot scale energy efficient flash dryer for cassava flour |
| topic | Flash dryer Energy efficiency Specific energy consumption High quality cassava flour |
| url | http://www.sciencedirect.com/science/article/pii/S2666916123000105 |
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