Modelling of Drying of Biomass Wastes in a Conical Spouted Bed Dryer

José, María; Álvarez, Sonia; López, Raquel Astacio

doi:10.1016/b978-0-444-63965-3.50088-x

Cited by 6 publications

(2 citation statements)

References 7 publications

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“…Many studies have been conducted on the drying of wastes with convection and microwave drying outside the food sector. Some of them are biomass waste (San Jose et al 2017), prina (Çelen et al 2016, paper industry wastes (Nadhari et al 2017;Gopal et al 2019), and drilling sludge (Tınmaz Köse 2019).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Thermal and Drying Characteristics of Dried Hazelnut (Corylus avellana L.) Shell Waste

Moralar,

Celen

2022

Philipp Agric Scientist

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As a biomass fuel, the hazelnut shell must be milled into sawdust and dried to contain a certain amount of moisture. For this purpose, calorific value, drying rates, thermal values, moisture diffusion, activation energy, and energy consumption at the end of the drying of the hazelnut shell, which is dried in the conveyor belt and microwave dryer, were calculated. The total minimum energy consumed by the hazelnut shell at the end of the experiment in microwave drying was measured as 0.2 kWh for 460 W and 4.65 kWh at 80°C drying temperature in conveyor belt drying until the final moisture value reached 1.1±0.8% wet basis at the end of the experiment. The effective diffusivity of moisture of hazelnut shell changed from 4.13×10-7 to 1.89×10-6 m2 s-1, and the activation energy was found as 2.275 W g-1 in microwave drying. The effective diffusivity of moisture of hazelnut shell changed from 6.39×10-7 to 9.21×10-7 m2 s-1, and the activation energy was found as 19 kJ / mol in the conveyor belt drying. In general, the diffusion coefficient increased with increasing air temperature and decreased with increasing microwave power. At the end of the experiments, the temperature in the product was measured as 72°C in microwave drying and 73.5°C in conveyor belt drying. According to these values, it has been determined that the most suitable drying system for waste disposal was the microwave drying system. The calorific value was measured as 20028.52 kJ/kg in conveyor belt drying and 20036.76 kJ/kg in microwave drying. Microwave drying yielded better results with an increase of 2.72%.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Thermal and Drying Characteristics of Dried Hazelnut (Corylus avellana L.) Shell Waste

Moralar,

Celen

2022

Philipp Agric Scientist

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“…Spouted beds technology can be an appropriate alternative for energy exploitation of renewable biomass wastes, with a previous reduction of moisture content of biomass wastes by drying, due to the high mass and energy transfer. Conical spouted beds have been applied for drying biomass wastes such as agricultural wastes [5][6], vineyard pruning wastes [7] sludge wastes [8][9][10][11], of yeast [12].…”

Section: Introductionmentioning

confidence: 99%

Drying of wastes of almond shells in conical spouted beds

José

Álvarez

López

2018

Proceedings of 21th International Drying Symposium

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The goal of this study was to prove the feasibility of a conical spouted bed dryer for the drying of wastes of almond tree fruit. The drying operating regimes ranges in sspouted beds contactors were determined. The drying tests were conducted in the spouted bed regime under determined experimental conditions. Beds consisting of almond shells were dried at drying air temperatures ranging from room temperature to 140 ºC. The drying behaviour was assessed based on the decrease in moisture content of almond shells with the time and the effect of drying air temperature on the drying process was analyzed. Keywords: Almond shells wastes; conical spouted beds; biomass wastes; drying

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