Effect of radio frequency (RF) drying technology on dehydration rate and energy consumption of Australia lignite

Zhang, Ning; Shi, Lei; Qi, Haitao; Yi-min, Xie; Cai, Lijun

doi:10.1080/07373937.2015.1012677

Cited by 8 publications

(4 citation statements)

References 8 publications

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“…However, its flavonoid, chlorophyll and vitamins are easily impaired in processing . High quality and low energy efficiency with respect to the dehydration of barley grass leaves present a challenge . Traditionally, barley grass is dried by hot air drying (HAD) and freeze drying (FD).…”

Section: Introductionmentioning

confidence: 99%

Effect of microwave freeze drying on quality and energy supply in drying of barley grass

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Effect of microwave freeze drying on quality and energy supply in drying of barley grass

et al. 2017

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“…After the temperature of the mixture was reduced to 30 °C, the outlet was opened to take out the mixture, and the whole mixture was weighed as m 3 . The corresponding material dewatering rate (MR) and drying thermal efficiency (DE) were calculated with eq 1 ( 30 ) and eq 2 . 31 (4) Industrial analysis was used to calculate the moisture, ash, volatiles, and fixed carbon content of the peanut shells in the SHC drying process.…”

Section: Methodsmentioning

confidence: 99%

Experimental Study on Drying Biomass with a Spherical Heat Carrier

Huang

Yin

et al. 2023

ACS Omega

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Due to the reduction of the thermal efficiency and output fluctuation of the boiler system caused by the high moisture in biomass, dewatering of fuels using low-cost processes is an important step in feedstock pretreatment for biomass power plants.In the present study, a steel ball was used as the spherical heat carrier (SHC). The effects of the SHC temperature on the dewatering of different biomasses were investigated by a mixturedrying device at 40% moisture content of biomass, and the drying process of peanut shells was analyzed. Results showed that the moisture content was effectively reduced, and the combustion performance of the biomass was significantly promoted. The work is likely to provide an economically feasible approach for biomass drying in further studies.

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“…An RF output power of 3 and 5 kW completely dried the samples. Zhang et al [29] pointed out that during RF drying, energy consumption is affected by the drying time. Therefore, when drying for 60 min, the energy consumption with an RF output power of 3 kW is lower than that with 5 kW.…”

Section: Effects Of the Rf Output Power And Electrode Gap On Fermente...mentioning

confidence: 99%

“…Furthermore, an electrode gap of both 12 and 16 cm completely dried the samples. Zhang et al [29] demonstrated that during RF drying, different electrode gaps would affect the dehydration rate of the sample and that a lower electrode gap would lead to a higher dehydration rate. In addition, after the fermented black bean dregs were dried for 60 min with electrode gaps of 12, 16, and 20 cm, the temperature of the fermented black bean dregs also increased as the electrode gap was decreased.…”

Section: Effects Of the Rf Output Power And Electrode Gap On Fermente...mentioning

confidence: 99%

Effect of Radio-Frequency Drying on the Physicochemical Properties and Isoflavone Contents of Fermented Black Bean Dregs

Huang,

Kuo,

Chen

et al. 2024

Processes

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We treated dry black bean dreg fermentation products with radio-frequency (RF) waves. With RF treatment (RF output power of 3 kW and electrode gap of 12 cm), a sample was dried within 1 h, which would take 10 h to dry via hot-air drying at 60 °C (sample weight reduction from 100 to 28.2 g). RF treatment thus accelerated fermented black bean dreg drying approximately 10-fold. The fermented black bean dregs were dried for 60 min at a fixed RF output power of 3 kW with different electrode gaps (12, 16, and 20 cm). Samples treated with electrode gaps of 12 and 16 cm were completely dried. When the fermented black bean dregs were dried for 60 min with an RF output power of 3 kW with a 16 cm electrode gap, their water activity decreased from 0.98 to 0.65. Colorimetric analysis showed that the sample color darkened significantly (ΔE = 5.73 ± 2.71), whereas its solubility (28.8 ± 0.1%) and antioxidant capacity (EC50 = 51.7 ± 0.7 mg/mL) increased. In addition, deglycosylated isoflavone daidzein content significantly increased, whereas that of the glycosylated isoflavone genistin decreased. These results reveal that RF application can efficiently dry fermented black bean dregs.

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Effect of radio frequency (RF) drying technology on dehydration rate and energy consumption of Australia lignite

Cited by 8 publications

References 8 publications

Effect of microwave freeze drying on quality and energy supply in drying of barley grass

Effect of microwave freeze drying on quality and energy supply in drying of barley grass

Experimental Study on Drying Biomass with a Spherical Heat Carrier

Effect of Radio-Frequency Drying on the Physicochemical Properties and Isoflavone Contents of Fermented Black Bean Dregs

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