AWWA WQTC69322

This powerpoint presentation begins by providing a brief overview of cuprosolvency, or copper in drinking water supplies. Presentation objectives include the following: study the spontaneous synthesis of pitting corrosion byproducts; study the affect of aging on particles; and, track morphology changes that affect mineral identification. Presentation conclusions indicate the following: most minerals are amorphous (poorly crystalline) upon formation, aging plays a critical role in particle development; water chemistry significantly affects copper synthesis, high pH favors the formation of tenorite, while low pH yields malachite and connellite; the role of chloride is unclear, however, high sulfate ratios tend to expedite formation; and, morphology changes occur due to the concentration of chloride and sulfate present in a solution. Includes tables, figures.