Drying kinetics of crushed mango stone: analysis of effective moisture diffusivity and drying rate for any drying condition.
Mango stone is positioned as one of the most abundant biomass in the world, with a high net calorific value to help reduce the CO2 emissions in the atmosphere. Its high moisture content implies a drying treatment to improve its fuel properties. In this work, the drying of crushed mango stone in a co...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Ajuntament de Barcelona |
| Repositorio: | RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén |
| OAI Identifier: | oai:dnet:ruja________::6eda1764e2380411bf712a4c9e858fef |
| Acceso en línea: | https://doi.org/10.1016/j.tsep.2026.104571 https://hdl.handle.net/10953/7792 |
| Access Level: | acceso abierto |
| Palabra clave: | Mango stone Convective Drying Drying rate Effective moisture diffusivity Food Waste Drying kinetics. 66.047 |
| Sumario: | Mango stone is positioned as one of the most abundant biomass in the world, with a high net calorific value to help reduce the CO2 emissions in the atmosphere. Its high moisture content implies a drying treatment to improve its fuel properties. In this work, the drying of crushed mango stone in a convective dryer was studied using a design experiment based on fifteen isothermal drying experiments. Tests were carried out at different drying air temperatures, 100 ºC, 125 ºC, 150 ºC, 175 ºC and 200 ºC, drying air velocities, 1 m/s, 2 m/s and 3 m/s and a sample thickness of 1.8 cm. Drying curves, drying rates and effective moisture diffusivity have been analysed. Drying times were drastically reduced, ranging from 35 minutes (the fastest test) to 2 hours and 25 minutes (the most extended test), compared to the drying of entire mango stone pieces carried out in a previous study. Drying rate values were obtained between 0.5·10-4 s-1 and 9·10-4 s-1, and the effective moisture diffusivity presented values between 6.88·10-9 m2/s and 35.9·10-9 m2/s. Two new variables are obtained by using an adequate association of parameters, namely modified drying rate and modified effective moisture diffusivity, which were derived from experimental data through regression analysis using polynomial surfaces with excellent fit results. The use of these new variables enables the determination of the drying rate and effective moisture diffusivity for various parameters, including temperature, sample thickness, moisture ratio, and velocity, through a single overall function. |
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