Abstract
The overall goal of the research was to develop a water quality monitoring system that simultaneously concentrates micron-size particles and bacterial cells in the nodal planes of a standing ultrasonic wave field and monitors the level of contamination using light transmission measurements. Ultrasonic concentration is an attractive method for in-line, continuous sensing since it has no moving parts and is not limited by a physical barrier, e.g., a filter, which may get plugged over time. The degree of concentration was evaluated over a range of initial particle concentration. Results showed that particle banding occurred within seconds of sonication - allowing for real-time analysis - and the degree of concentration increased with decreasing initial concentration of particles in the suspension. Concentration factors of 5 to 10 were achievable. Results from this study can be used in the design and fabrication of sensitive water quality monitoring systems that would permit real-time water quality analysis.
| Original language | English (US) |
|---|---|
| Article number | 59940Z |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5994 |
| DOIs | |
| State | Published - 2005 |
| Externally published | Yes |
| Event | Chemical and Biological Sensors for Industrial and Environmental Security - Boston, MA, United States Duration: Oct 24 2005 → Oct 26 2005 |
Keywords
- Detection
- Particles
- Real-time
- Standing waves
- Ultrasound
- Water quality
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering