Scalable electrohydrodynamic drying configuration for dehydrating biological materials at industrial scale

Iranshahi, Kamran; Onwude, Daniel I.; Rubinetti, Donato; Martynenko, Alex; Defraeye, Thijs

doi:10.31224/2328

Cited by 5 publications

(5 citation statements)

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“…A considerable part of the researches were dedicated to examining the quality of the final product (including sensory appeal and nutritional content), drying kinetics, and electrode configuration, fine‐tuning electrical process parameters, and environmental factors (Iranshahi et al, 2023). Among the recent studies, commonly employed electrode configurations include multiple wire‐to‐plate, wire‐to‐mesh, and needle‐to‐plate setups (Iranshahi et al, n.d.; Defraeye & Martynenko, 2019; Martynenko et al, 2022; Taghian Dinani et al, 2015).…”

Section: Drying Methodsmentioning

confidence: 99%

Preservation of fruits through drying—A comprehensive review of experiments and modeling approaches

Kilic,

Sahin,

Hassan

et al. 2024

J Food Process Engineering

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A significant part of the world's population still has problems in accessing food. The growing world population will exacerbate this issue in the future. Innovative studies conducted in this field play a crucial role in addressing the issue of drying and storage of foods. Atmospheric drying methods, such as rotary, tunnel, conveyor, cabinet, tower, and kiln dryers, offer advantages in relation to high production capacities, cost‐effective initial setup, and economical operating conditions. However, concurrently, the weaknesses of these methods arise from factors such as drying duration, uneven moisture content, and space requirements. The solar dryer method is especially effective in dehydrating agricultural products, offering an energy‐saving advantage compared to other methods. However, it is important to note that this approach, which involves exposing crops to direct sunlight, comes with several drawbacks affecting both food quality and health. In cases where the quality of highly valued foodstuffs is crucial, subatmospheric drying methods like vacuum, freeze, and microwave freeze are typically preferred. However, the primary drawback of this approach lies in its high operating costs, particularly in terms of energy consumption. Artificial neural networks (ANNs) can be used for predictive modeling, helping to forecast drying behavior and optimize process parameters in food drying applications especially nonlinear connections among variables. ANNs are adept at managing nonlinearities, offering a more precise depiction of the intricate interactions within food drying systems. This review examines articles from the last 5 years in the literature, synthesizing research conducted in food drying. The findings indicate a predominant interest among researchers in methodologies with lower environmental impact, prompting increased attention to studies addressing this aspect. There is a notable emphasis on the frequent exploration of energy‐efficient systems. The ongoing research focuses on the development of methods utilizing ultrasonic, infrared radiation, and electrohydrodynamic techniques to achieve more effective, shorter‐duration, energy‐efficient drying processes with enhanced control over the final product.

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Section: Drying Methodsmentioning

confidence: 99%

Preservation of fruits through drying—A comprehensive review of experiments and modeling approaches

Kilic,

Sahin,

Hassan

et al. 2024

J Food Process Engineering

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“…Moreover, for drying applications, EHD air amplifiers can provide a suitable alternative to the current state of the art, which usually involves combining a fan with a heating coil. Providing targeted airflow can improve the convective aspect of such drying processes while omitting the energy-intensive heating component (Iranshahi et al, 2022).…”

Section: Applicability Of Ehd Air Amplificationmentioning

confidence: 99%

An in-silico proof-of-concept of electrohydrodynamic air amplifier for low-energy airflow generation

Rubinetti

Iranshahi

Onwude

et al. 2023

Journal of Cleaner Production

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“…EHD drying tests were performed using a lab-scale EHD drying setup. More details about the lab-scale EHD dryer can be found in Section 2.2 and (Iranshahi, Onwude, Rubinetti, Martynenko, & Defraeye, 2022).…”

Section: Sample Preparation and Drying Experimentsmentioning

confidence: 99%

“…EHD drying tests were carried out in a lab-scale EHD drying setup (Fig. 2) optimized based on the previous simulation and experimental studies (Iranshahi, Martynenko, & Defraeye, 2020;Iranshahi, Onwude, Rubinetti, et al, 2022). The main components of this upscalable setup are a convective chamber (40 × 40 × 70 cm), a digital weighing scale (0.1 g resolution, PG5001-S, Mettler-Toledo, Greifensee, Switzerland), discharge (emitter) wire electrodes and collecting plate electrode, and two high-voltage power supplies of positive and negative polarity (Spellman_SL30PN10, 0-30 kV).…”

Section: Ehd Drying Experimental Setupmentioning

confidence: 99%

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Impact of pre-treatment methods on the drying kinetics, product quality, and energy consumption of electrohydrodynamic drying of biological materials

Iranshahi¹,

Psarianos²,

Rubinetti³

et al. 2022

Preprint

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Electrohydrodynamic (EHD) drying is an energy-efficient drying method. This novel drying technology operates at room temperature, which makes it particularly suitable for drying biomaterials that contain heat-sensitive compounds. It has a higher drying rate than other low-temperature methods, such as solar and freeze-drying. However, its drying rate is not high enough to compete with other conventional thermal methods, such as hot-air drying. For industrial applications requiring high product throughput, the drying rate of EHD drying should be improved. One way to do this is to combine EHD with pre-treatment methods. Therefore, this study evaluated the impact of different pre-treatment methods on drying kinetics, energy consumption, and product quality attributes of apple slices dried using EHD drying. Pulsed electric fields (PEF), ultrasound, and blanching are the studied pre-treatment methods. Results show that only PEF pre-treatment could significantly decrease the EHD drying time by 39%. However, it resulted in a 26% higher browning index than the untreated EHD-dried apples, which is not appealing to consumers. The applied pre-treatment methods did not significantly affect other quality attributes, such as antioxidant activity, total phenolics, and rehydration ratio. In conclusion, using the studied pre-treatments for EHD drying increases the complexity of the process, whereas it is arguable whether the added values outweigh the energetic and quality downsides or not.

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Scalable electrohydrodynamic drying configuration for dehydrating biological materials at industrial scale

Cited by 5 publications

References 0 publications

Preservation of fruits through drying—A comprehensive review of experiments and modeling approaches

Preservation of fruits through drying—A comprehensive review of experiments and modeling approaches

An in-silico proof-of-concept of electrohydrodynamic air amplifier for low-energy airflow generation

Impact of pre-treatment methods on the drying kinetics, product quality, and energy consumption of electrohydrodynamic drying of biological materials

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