Malvern Instruments Presents New Data for On-line Zeta Potential Measurement in Water Treatment

27 Jun 2013
Sarah Thomas
Associate Editor

Product news

Experts from Malvern Instruments delivered a presentation focusing on the use of on-line zeta potential measurement in water purification as part of the 87th ACS 2013 Colloid & Surface Science Symposium, held at the University of California Riverside, USA, in June 2013. The talk highlighted new data detailing the application of Malvern’s Zetasizer Nano system for process monitoring and coagulant dosage control in water treatment.

Zeta potential is a measure of the magnitude of the electrostatic repulsion or attraction between particles, and is one of the fundamental parameters known to affect stability. This correlation with dispersion stability has led to its widespread use in water treatment to monitor the tendency of particles in suspension to aggregate.

The Malvern presentation explored ways in which zeta potential is being used both on- and off-line to monitor and control the flocculation processes used to remove organic matter from raw water. Malvern’s Dr Ana Morfesis presented case studies showing how water treatment plants in the US are using the Zetasizer Nano’s on-line capabilities to troubleshoot purification processes, reduce chemical usage and simplify process operation.

Malvern, Malvern Instruments, and Zetasizer are registered trademarks of Malvern Instruments Ltd
Zetasizer Nano is a trademark of Malvern Instruments Ltd

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Environmental Monitoring and TestingEnvironmental monitoring and testing uses handheld portable analyzers, kits, spectrometers or chromatography systems for air, water, soil, food and other sample testing. Useful features of analyzers such as BOD and COD include portability, easy calibration, automation and sensitivity.  Environmental test kits for pH, water, moisture, etc, should be accurate, sensitive, reliable, fast and easy to use.Water PurificationThere are a number of water purification methods available to remove contamination from laboratory water. These systems include demineralization, reverse osmosis, filtration and ultrafiltration. A combination of methods is sometimes necessary to achieve purified water suitable for use in experiments.Water AnalysisAnalytical methods used to test the purity of drinking water include determining the level of contaminants abides to the level set by the Environmental Protection Agency (EPA).Zeta PotentialWater AnalysisAnalytical methods used to test the purity of drinking water include determining the level of contaminants abides to the level set by the Environmental Protection Agency (EPA).
Malvern Instruments Presents New Data for On-line Zeta Potential Measurement in Water Treatment