Applications of Microwave Heating in Agricultural and Forestry Related Industries

Brodie, Graham

doi:10.5772/45919

Cited by 12 publications

(10 citation statements)

References 97 publications

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“…Generally, the amount of energy transferred depends on: the intensity of the electromagnetic fields; the frequency of the fields' oscillations; and the dielectric properties of the material. The power dissipated per unit volume in a non-magnetic, uniform materials, exposed to electromagnetic fields can be expressed as [37]:…”

Section: Energy Transfermentioning

confidence: 99%

Energy Transfer from Electromagnetic Fields to Materials

Brodie¹

2019

Electromagnetic Fields and Waves

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Electromagnetic fields are complex phenomena, which transport energy and information across space. Information can be imposed onto electromagnetic waves by human ingenuity, through various forms of modulation; however, this chapter will focus on the acquisition of information as electromagnetic waves are generated by materials or pass through materials. The chapter will also consider how energy is transferred to materials by electromagnetic fields.

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Section: Energy Transfermentioning

confidence: 99%

Energy Transfer from Electromagnetic Fields to Materials

Brodie¹

2019

Electromagnetic Fields and Waves

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“…Microwaves are non-ionizing electromagnetic waves ( Figure 5) with a frequency of about 300 MHz to 300 GHz and the wavelength range of 1 m to 1 mm [23]. Biological and agricultural systems are electro-chemical in nature [24] and a mixture of organic and dipole molecules, i.e., H 2 O, arranged in different geometries [25,26].…”

Section: Microwave Soil Heatingmentioning

confidence: 99%

Microwave Soil Treatment and Plant Growth

Brodie¹,

Khan²,

Gupta³

2020

Sustainable Crop Production

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Crop yield gaps can be partially overcome by soil sanitation strategies such as fumigation; however, there are fewer suitable fumigants available in the marketplace and growing concerns about chemical impacts in the environment and human food chain. Therefore, thermal soil sanitation has been considered for some time and microwave soil treatment has some important advantages over other thermal soil sanitation techniques, such as steam treatment. It is also apparent that microwave soil sanitation does not sterilize the soil, but favors beneficial species of soil biota making more nutrients available for better plant growth. From these perspectives, microwave soil treatment may become an important pre-sowing soil sanitation technology for high value cropping systems, allowing agricultural systems to better bridge the crop yield gap.

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“…High drying rates and, consequently, shorter drying times; a greater energy efficiency; the generation and more efficient use of heat, due to the deeper penetration of microwave energy in the products to be dried and to the reduction of heat loss since it is not necessary to heat the entire volume of the drying chamber to dry the product; precise and instantaneous electronic control that allows an adequate control of the drying temperature and a prompt commencement completion of the process; greater uniformity during the drying process; lower drying temperatures that will reduce the thermal gradients and drying imperfections of conventional methods and ensure the quality of the product to be dried, while preventing the migration of other materials to the surface, and offering a cleaner drying process, which does not generate secondary waste. For these reasons, it is not surprising that the number of studies aimed at evaluating the potential of the microwave oven for seed drying has increased enormously in recent years [22,24,[42][43][44][45][46][47].…”

Section: Improvement Of the Drying Process Of Amaranth Seeds By Using Microwave Energymentioning

confidence: 99%

Adaptation Strategies and Microwave Drying of Amaranth Species with a High Nutritional Value to the Ecuadorian Andean Region

Torres–Miño¹,

Maqueda²,

Moreno³

2020

Nutritional Value of Amaranth

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In the Andean region of Ecuador, amaranth is a key species not only for its high nutritional value but also for its association with Ecuadorian culture, since it is one of the main indigenous crops of the pre-Columbian era. Over the time, the cultivation of this species ceased for several reasons result. However, in recent years, a number of strategies have been developed to retrieve it on a national level. In accordance with these strategies, the "Amaranth Improvement Program for Cotopaxi" (PROMAC) is being developed at the Technical University of Cotopaxi, with the main objective of selecting varieties with high levels of biologically active substances. This program is been executed through two main lines of investigation: (a) selection of varieties of amaranth of high nutritional value and (b) the improvement of techniques for conservation of the seeds. This chapter analyzes and shows the main results obtained to date from the study of eight varieties of amaranth seeds and the drying of one of the seeds by means of microwave energy in order to improve its conservation. In the light of the results obtained, the strategies to develop the following research lines within the PROMAC framework are exposed.

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Applications of Microwave Heating in Agricultural and Forestry Related Industries

Cited by 12 publications

References 97 publications

Energy Transfer from Electromagnetic Fields to Materials

Energy Transfer from Electromagnetic Fields to Materials

Microwave Soil Treatment and Plant Growth

Adaptation Strategies and Microwave Drying of Amaranth Species with a High Nutritional Value to the Ecuadorian Andean Region

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