Measurement and modelling of organic matter’s altering effect on dielectric behavior of soil in the region of 200 MHz to 14 GHz

IF 0.9 4区工程技术 Q4 ENGINEERING, CHEMICAL

Journal of Microwave Power and Electromagnetic Energy Pub Date : 2023-01-02 DOI:10.1080/08327823.2023.2167154

Prachi Palta, Prabhdeep Kaur, K. S. Mann

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引用次数: 0

Abstract

Abstract Organic matter (OM) is one of the parameters which is commonly ignored while studying the properties of soil but it strongly affects and alters soil’s behavior and characteristics. The presented study analyzes the properties of soil like bulk density, and dielectric properties and penetration depth, emissivity, and conductivity as a function of OM (0.78–17.28% of total soil mass), moisture content (15–25% volumetric basis), and frequency (200 MHz–14 GHz). The properties have been investigated using a vector network analyzer (VNA), and an open-ended coaxial probe (85070E, Agilent Technologies). The observed results showed that in addition to moisture content and frequency, the amount of OM present in soil strongly affects the properties of soil. The OM present in soil improves soil structure as well as binding forces in soil water molecules. Third-order Response surface method (RSM) regression models are generated to estimate soil’s properties as a function of OM, frequency, and moisture content. These models show a R2 score of 0.9754, 0.9964, 0.9204, 0.9962, 0.9827, 0.9859 for bulk density, penetration depth, conductivity, and emissivity, respectively. These models can be helpful for fast and accurate prediction of properties of soil under the effect of OM, moisture content, and frequency.

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200 ~ 14 GHz范围内有机质对土壤介电特性影响的测量与模拟

摘要有机质是土壤性质研究中经常被忽视的参数之一，但它对土壤的行为和特征有着强烈的影响和改变。本研究分析了土壤的容重、介电特性、渗透深度、发射率和电导率与OM(0.78-17.28%)、含水量(15-25%体积基础)和频率(200 MHz-14 GHz)的关系。使用矢量网络分析仪(VNA)和开放式同轴探头(85070E, Agilent Technologies)对其性能进行了研究。观测结果表明，除含水量和频率外，土壤中OM的存在量对土壤的性质有很大影响。土壤中存在的OM改善了土壤结构，也改善了土壤水分子的结合力。建立了三阶响应面法(RSM)回归模型来估计土壤的性质作为OM、频率和含水量的函数。这些模型的容重、穿透深度、电导率和发射率的R2分别为0.9754、0.9964、0.9204、0.9962、0.9827、0.9859。这些模型有助于快速准确地预测土壤在有机质、含水率和频率影响下的性质。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Microwave Power and Electromagnetic Energy ENGINEERING, CHEMICAL-ENGINEERING, ELECTRICAL & ELECTRONIC

CiteScore

2.50

自引率

6.70%

发文量

期刊介绍： The Journal of the Microwave Power Energy (JMPEE) is a quarterly publication of the International Microwave Power Institute (IMPI), aimed to be one of the primary sources of the most reliable information in the arts and sciences of microwave and RF technology. JMPEE provides space to engineers and researchers for presenting papers about non-communication applications of microwave and RF, mostly industrial, scientific, medical and instrumentation. Topics include, but are not limited to: applications in materials science and nanotechnology, characterization of biological tissues, food industry applications, green chemistry, health and therapeutic applications, microwave chemistry, microwave processing of materials, soil remediation, and waste processing.