Energetic, Economic and Global Warming Aspects of Fluidized Bed Drying of the Medicinal Plant Echium Amoenum Fisch. & C. A. Mey

The energy performance and carbon footprint associated with the fluidized bed drying of petals of Echium amoenum Fisch. and C.A. Mey are experimentally evaluated at three temperatures (40,50,60°C) and air velocities (0.50,0.75,1.00m/s). The maximum and minimum specific energy consumption are observed to occur at 40°C and 1ms-1 (79.18MJ/kg) and 60°C and 0.5m/s (22.60MJ/kg), respectively. The greenhouse gas emission is in the range, 0.10-8.40kgCO2eq, varying with drying conditions in the same manner as energy consumption, with natural gas-fired systems performing better than oil-fired systems. High-temperature, low-air velocity drying is thus, favourable for energy-efficient and sustainable fluidized bed drying of the petals.Keywords: fluidized bed dryer; greenhouse gas; specific energy consumption; Iran.

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Bioactive compound retention in Echium amoenum Fisch. & C. A. Mey. petals: Effect of fluidized bed drying conditions

International Journal of Food Properties ◽

10.1080/10942912.2016.1233436 ◽

2017 ◽

Vol 20 (10) ◽

pp. 2249-2260 ◽

Cited By ~ 6

Author(s):

Fatemeh Nadi

Keyword(s):

Fluidized Bed ◽

Bioactive Compound ◽

Echium Amoenum ◽

Fluidized Bed Drying ◽

Drying Conditions

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A performance analysis of batch fluidized bed drying of two pharmaceutical powders by desirability approach

Drying Technology ◽

10.1080/07373937.2020.1861460 ◽

2020 ◽

pp. 1-22

Author(s):

Amel Zammouri ◽

Nourhene Boudhrioua Mihoubi ◽

Nabil Kechaou

Keyword(s):

Performance Analysis ◽

Fluidized Bed ◽

Pharmaceutical Powders ◽

Desirability Approach ◽

Fluidized Bed Drying ◽

A Performance

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Fluidized Bed Drying of Pumpkin (Cucurbita sp.) Seeds

Foods ◽

10.3390/foods8050147 ◽

2019 ◽

Vol 8 (5) ◽

pp. 147 ◽

Cited By ~ 1

Author(s):

Saheeda Mujaffar ◽

Sheena Ramsumair

Keyword(s):

Fluidized Bed ◽

Crude Protein ◽

Agricultural Waste ◽

Fluidized Bed Dryer ◽

Rate Period ◽

Drying Behavior ◽

Pumpkin Seeds ◽

Fluidized Bed Drying ◽

Fresh Cut ◽

Pumpkin Powder

Pumpkin seeds are a major agricultural waste from the fresh-cut produce industry. The objective of this study was to investigate the drying behavior of untreated, whole pumpkin seeds in a fluidized bed dryer at 50–80 °C (2.87 m/s), with a view to producing a high-quality pumpkin powder from dried seeds. Seeds were dried at 50–80 °C to an average equilibrium moisture value of 0.035 to 0.006 g H2O/g DM (3.4 to 0.6% wb). Drying occurred in the falling rate period only and drying rate constants ranged from 0.0226 to 0.0900 1/min with corresponding diffusivity values for the first falling-rate period ranging from 4.68 to 18.63 × 10−10 m2/s. The activation energy (Ea)—for the first falling rate period was determined to be 43.9 kJ/mol. Of the nineteen thin layer models tested, the Alibas model could be successfully used as a general model to predict the Moisture Ratio (MR) data for all temperatures investigated. After drying, seeds were blended to produce powders, which were found to be high in fat, crude protein and fiber.

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