pulverized air dryer, the effect of additives and microwave oven drying

Study the effect of sun, oven and microwave drying on ...

2010-9-1 · By using oven drying method (50 °C and 70 °C), the drying time up to the moisture content of approximately 49 g/100 g (wwb) could be shortened by 11.76 and 79.41%, when compared to sun drying, respectively. For microwave oven drying at 210 W and 700 W, the drying times to reach the 49 g/100 g (wwb) moisture content were 10.5 min and 8.33 min ...

Studies on the effects of microwave drying and cabinet ...

2006-6-10 · Garlic cloves in the form of bits were dried in a cabinet tray dryer and a microwave dryer, and pulverized to obtain free flowing powder. The volatile oil was obtained by hydro-steam distillation method. Fresh cloves and the powders resulting from the two drying methods were used for obtaining the volatile oil, which was analyzed by GC-MS. The studies were mainly restricted to comparing the ...

Influence of drying process on the quality of medicinal ...

drying air was 30ºC (0.008% of oil related to the mass of plant), because the drying time too long there was more enzymatic activity, causing degradation of taxol. Koller and Raghavan (1995) studied the effects of oven drying, freeze drying and microwave drying on the composition of essential oil of thyme ( Thymus vulgaris L.).

(PDF) Effect of Adding some Additives and Drying Method

The current study was conducted to assess the effect of incorporating various additives (i.e. cured resin, pulverised stone, pulverized plaster, and glass fibers) and drying method on compressive ...

(PDF) Study the effect of sun, oven and microwave drying ...

Sun, oven (50 and 70 °C) and microwave oven (210 and 700 W) drying of onion slices were carried out to monitor the drying kinetics and quality degradation of the product. Page, “Modified Page” and “Midilli and Küçük” models exhibited high coefficient

Experimental study on agitated drying characteristics of ...

2014-7-1 · Drying experiments of dewatered sewage sludge (DSS) were conducted on a agitated paddle dryer, and the effects of additive agents, i.e., CaO, pulverized coal (PC), heavy oil (HO), and dried sludge (“DS” through back mixing) on the agitated drying characteristics of DSS were investigated.

Effects of freezing, convective and microwave-vacuum ...

2019-5-1 · The time of microwave-vacuum drying was shortened with an increase in microwave power. A five-fold increase in microwave power from 100 to 500 W decreased drying time by up to 90%. Microwave-vacuum drying at microwave power of 150–500 W led to rapid evaporation of moisture from capillaries and increased the pressure in near-surface capillaries.

A proposed numerical–experimental method for drying ...

2009-1-1 · The drying time of the droplets in spray dryer is very short in comparison with most other drying processes. There are many type of dryer such as constant bed dryer, fluidize bed dryer and microwave dryer that used hot air flow for drying foods. Hot air contacts with solid products such as grains, vegetables and fruits pulps and dry them.

Effect of electrohydrodynamic partially combined with

The drying rate of Chinese wolfberry using the EHD partially combined with oven drying was significantly higher than those of the oven drying and the control. The EHD partially combined with oven drying have great influence on drying rate, rehydration rate and polysaccharide content, and have little effect on shrinkage and flavonoid content.

Spray-drying of fruit and vegetable juices: Effect of ...

2017-5-1 · Background. Spray-drying is one of the highly utilized techniques to increase the shelf-life of food products. However, there are problems during spray-drying of sugar-rich fruit and vegetable juices due to the low glass transition temperature of sugars present in these products (Bhandari, Datta, &

Effects of Hot-Air Coupled Microwave on Characteristics ...

2021-1-26 · Hot-air coupled microwave was employed to dry lotus root slices. The effects of lotus root slice thickness (5, 8, 11, 14, and 17 mm), hot-air velocity (1.5, 2.0, 2.5, 3.0, and 3.5 m/s), hot-air temperature (50, 55, 60, 65, and 70 °C), and microwave power density (2, 4, 6, 8, and 10 W/g) on drying characteristics and kinetics were studied. Results indicated that the drying process involved ...

Effect of Temperature and Microwave Power Levels on ...

2019-2-2 · drying models were used to analyze the hot-air drying process. The microwave drying processes at all temperature (100–140 C) or low microwave power levels (500–700 W) exhibited four periods: a warm-up period, a short constant period, the first and second falling rate period, while one falling rate period was found during hot-air drying.

A proposed numerical–experimental method for drying ...

2009-1-1 · The drying time of the droplets in spray dryer is very short in comparison with most other drying processes. There are many type of dryer such as constant bed dryer, fluidize bed dryer and microwave dryer that used hot air flow for drying foods. Hot air contacts with solid products such as grains, vegetables and fruits pulps and dry them.

Experimental study on agitated drying characteristics of ...

2014-7-1 · Drying experiments of dewatered sewage sludge (DSS) were conducted on a agitated paddle dryer, and the effects of additive agents, i.e., CaO, pulverized coal (PC), heavy oil (HO), and dried sludge (“DS” through back mixing) on the agitated drying characteristics of DSS were investigated.

Investigation of microwave drying on quality attributes ...

2021-2-12 · The primary objective of this work was to investigate microwave drying behaviour of bee pollen grains, and study the effect of microwave drying on quality, physicochemical properties, sensory characteristics and morphological structure of the bee pollen. Bee pollen samples were dried at 180, 360, 540, 720 and 900 W microwave power levels. Drying kinetics of the bee pollen samples during ...

Mechanism of Effect of Microwave Modification on ...

Drying characteristics of low rank coals in a local microwave oven operating at 2.45GHz were investigated. Effects of coal particle size, microwave power level, and coal sample size on drying ...

Hot Air Drying Oven for Dehydrating Fruit

Hot air circulation drying technique employs a circulating flow of heated air to remove fruit slices’ surface and interior moisture. In the hot air drying oven, the heated air can speed up the chamber’s heat transmission, it also reduces the chamber’s relative humidity and thus accelerates the drying

Effect of electrohydrodynamic partially combined with

The drying rate of Chinese wolfberry using the EHD partially combined with oven drying was significantly higher than those of the oven drying and the control. The EHD partially combined with oven drying have great influence on drying rate, rehydration rate and polysaccharide content, and have little effect

Effect of different pretreatments followed by hot-air and ...

2020-2-1 · More than 84% of industrial dryers use hot air (convective drying) and combustion gas (Saikrishna, Dutta, Subramanian, Moses, & Anandharamakrishnan, 2018). Sehrawat, Nema, and Kaur (2018) found that the effect of hot-air drying (HAD) on mango cubes was more apparent than other drying processes. HAD, on the one hand, is very simple and cost ...

Industrial Microwave Vacuum Dryer | Low temperature

Industrial Microwave Vacuum Dryer is a kind of equipment developed for the deep processing of food, pharmaceutical, biological, chemical, new materials and agricultural and sideline products to provide a new and efficient low-temperature drying process. Low-temperature dehydration and drying of most fruits and vegetables, including .

Effects of Residual Aggregate Moisture on Stripping ...

microwave oven for drying the samples. Microwave oven drying was rapid and much more convenient than the distillation method, ASTM D 1461. More information regarding the use of the microwave oven for moisture content determination of asphalt concrete mixes is reported elsewhere. Moisture Contents of Hot Bin Aggregates

Drying kinetics of onion (Allium cepa L.) slices with ...

2016-11-12 · Onion slices were dried using two different drying techniques, convective and microwave drying. Convective drying treatments were carried out at different temperatures (50, 60 and 70 °C). Three different microwave output powers 328, 447 and 557 W were used in microwave drying. In convective drying, effective moisture diffusivity was estimated to be between 3.49 × 10−8 and 9.44 × 10−8 m2 ...

Effect of different pretreatments followed by hot-air and ...

2020-2-1 · More than 84% of industrial dryers use hot air (convective drying) and combustion gas (Saikrishna, Dutta, Subramanian, Moses, & Anandharamakrishnan, 2018). Sehrawat, Nema, and Kaur (2018) found that the effect of hot-air drying (HAD) on mango cubes was more apparent than other drying processes. HAD, on the one hand, is very simple and cost ...

The Influence Of Microwave Drying Parameters On The ...

Drying of the synthetic moulding sand in conventional dryers is provided by passing the hot air. This results in movement of some water inside moulding sand. Conventional drying is energy- and time-consuming method and requires lot of space. The elimination of presented disadvantages is possible through microwave application.

The Effect of Dryer Inlet and Outlet Air Temperatures and ...

The effect of protectant solids (lactose, sodium caseinate, and their mixture) on the survival of Lactococcus lactis subsp. cremoris was studied in a convective-air-drying environment using single ...

(PDF) Modification of Gypsum Products (Part II): The ...

Aims: Studying the effect of microwave drying on the physical and mechanical properties of modified Iraqi plaster and modified Plaster of Paris in comparison with open air drying method.

How It Works – PrintDry™

2021-8-21 · How It Works. After absorbing moisture from the air, the water molecules are bound to the polymer chains of filaments. The PrintDry filament dryer uses heat to cause the molecules in the filament to move more vigorously and this weakens and breaks

US20050276897A1 - Ultra-dry calcium carbonate - Google

Ultra-dry calcium carbonate particles, a method for drying calcium carbonate particles and also the use of the resulting dried calcium carbonate as a flow property regulating agent in sealing compounds or adhesive compositions. The calcium carbonate particles are dried with microwaves. The drying can take place in a continuous belt apparatus, a batch treatment apparatus or a rotary-tube ...

China Microwave Drying Sterilization Equipment - China ...

Microwave drying sterilization equipment : Microwave drying sterilization equipment is to use the common function of the heating effect of the electromagnetic field and biological effects. Microwave thermal effect was to make the protein changes of bacteria, the bacteria lose nutrition, breeding and the conditions of survival and death. The biological effect of ...

Effect of pretreatment on physicochemical, microbiological ...

2020-9-13 · The effect of drying and pretreatment with potassium metabisulfite (KMBS) of concentrations 0.0%, 0.1%, 0.15%, 0.2%, and 1.0% and blanching at 100°C and 50°C using a tent-like concrete solar (CSD) dryer as compared to open-sun drying (OSD) of yellow ginger rhizomes was investigated using routine methods.

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