Chapter
Aug 11, 2016
Impedance-Based Water-Quality Monitoring Using the Parallel-Plate Method
Authors: Ali Nazari, Arvin Farid, and Ken CornellAuthor Affiliations
Publication: Geo-Chicago 2016
Abstract
The application of electromagnetic (EM) waves to measure the electrical properties (dielectric constant and loss tangent) of materials is a well-known approach. The electrical properties can be used to indirectly measure several physical properties of solutions in water such as the concentration and chemical composition of contaminants in water, as a representative of the liquid phase in soil. A capacitive method of measuring dielectric properties of solutions is proposed to detect and determine low-concentration chemical and biological contaminations in water. The primary objective of this project is to design a low-cost sensor that would require small volumes of samples to detect low concentrations of dissolved contaminants in water. A forward model was developed using a finite-element method (FEM) to simulate the experimental setup (EXP). A calibration function was also developed to minimize deviations between FEM and EXP results for benchmark/reference solutions with known dielectric properties. The validated, calibrated forward model was then inverted to calculate the electrical properties of unknown solutions using the corresponding EXP results.
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© 2016 American Society of Civil Engineers.
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Published online: Aug 11, 2016
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ASCE Technical Topics:
- Chemical properties
- Chemistry
- Energy engineering
- Energy sources (by type)
- Engineering fundamentals
- Environmental engineering
- Finite element method
- Geomechanics
- Geotechnical engineering
- Hydro power
- Material mechanics
- Material properties
- Materials engineering
- Methodology (by type)
- Numerical methods
- Physical properties
- Plates
- Renewable energy
- Soil mechanics
- Soil properties
- Structural engineering
- Structural members
- Structural systems
- Water quality
- Water treatment
Authors
Affiliations
Ali Nazari
Master of Geotechnical Engineering, Dept. of Civil Engineering, Boise State Univ., 1910 University Dr., MS 2060, Boise, ID 83725-2060.
Arvin Farid
Associate Professor, Dept. of Civil Engineering, Boise State Univ., 1910 University Dr., MS 2060, Boise, ID 83725-2060.
Ken Cornell
Associate Professor, Dept. of Chemistry and Biochemistry, Boise State Univ., 1910 University Dr., MS 1520, Boise, ID 83725-1520.
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