The Capacity of Ion Exchange Resin
By C.F. ‘Chubb’ Michaud, MWS Ion exchange 101: defining and measuring capacity Webster’s Dictionary defines capacity simply as “the ability to do something” or “the maximum number that can be contained.” This is a quantitative […]
The Chemistry of Ion Exchange
By C.F . ‘Chubb’ Michaud, MWS Chemistry 101: elements, compounds, acids, bases, salts and ions All of the chemicals listed in The Periodic Table of the Elements (see Figure 1) are made up of atoms, […]
Introduction to Membrane Separations
By Greg Reyneke, MWS In the water quality improvement industry, membranes are defined as physical barriers that separate solutions and allow passage of waterborne contaminants within a certain range of size, molecular mass, or even […]
Water Treatment—An Enigma of Its Own, Part 2
By Peter S. Cartwright, PE In Part 1, I addressed the wild claims and nonsensical science behind PWCs designed for scale control. This article is devoted to other water quality improvement claims of these and […]
The Art of the Recycle, Part 3: How It’s Done (If It’s D...
By C.F. ‘Chubb’ Michaud, MWS In Parts 1 and 2 of this series, we looked at improving water productivity primarily through the use of reclaimed wastewater and treating it to substitute for new water as […]
NSF/ANSI Water Cooler Standards
By Rick Andrew There are many different forms, functions and configurations for products generally considered to be water coolers. Many of them heat the water in addition to cooling it or have a dispenser for […]
Maintaining Water Coolers: Back to the Basics
By Gary Battenberg Introduction Water dispensers and coolers have been commercially available since the 1930s but bottled water has been a thriving business since before America declared its independence. Records of water bottled and sold […]
Ozone–A Powerful Tool
By Greg Reyneke, MWS The deadly algal blooms in the Great Lakes of the US in the recent past remind us that water is teeming with life and the nutrition to sustain it. Naturally occurring […]
The Art of the Recycle, Part 1: The Challenge of the ‘Yuck...
By C.F. ‘Chubb’ Michaud, MWS Mother Nature should receive the Nobel Prize in chemistry for developing the most effective and efficient water reclamation and recycling process on the planet. She does this with no emissions […]
A Comparison Study of Activated Carbon Blocks for POU/POE Ap...
By Alexey Aksenov, Alexander Mitilineos, Alexander Polyakov, PhD and Joseph L. Shmidt, PhD Activated carbon (AC) cartridges are widely used in POU and POE water purification applications for: • Prefiltration before RO membranes for reducing […]