Differentiating the Needs of Commercial and Industrial Desig...
By C.F. ‘Chubb’ Michaud, MWS Defining C&I A few years back, I was invited to chair the somewhat recently created Commercial & Industrial (C&I) Section of the Water Quality Association (WQA). The purpose was to […]
Ion Exchange: The Role of Cross-Linking and Aging
By C.F. ‘Chubb’ Michaud, MWS The role of cross-linking (x-l) The level of DVB (cross-linking) a resin has determines the tightness of the resin. Higher cross-linked resins have lower moisture content, meaning more plastic and […]
Ion Exchange Resin Synthesis and Reactions
By C.F. ‘Chubb’ Michaud, MWS Making beads Take a fresh egg and break it into a bowl. It’s understandable that the moisture content of a raw egg is over 75 percent. Now hard boil another […]
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, […]
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 […]
The Art of the Recycle, Part 2: Improving Water Productivity
By C.F. ‘Chubb’ Michaud, MWS Various regions of the world are facing water shortages. Mother Nature provides us with an adequate amount of clean water but it is not necessarily universally available where needed. In […]
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 […]
Pretreating for Optimal Arsenic Reduction
By C.F. ‘Chubb’ Michaud, MWS It’s tasteless, odorless and colorless in water. It is highly toxic (a fact we have known and employed for over 2,000 years). As little as 100 milligrams will do you […]
Improving Media Adsorption Efficiency for Arsenic and Fluori...
By C.F. ‘Chubb’ Michaud, CWS-VI There are two contaminants commonly found in water that have been in the spotlight for the past decade. These are arsenic and fluoride. Most groundwater sources will contain two to […]