Bradley D Patton

An on-line voltammetric analyzer for trace metals in wastewater

Abstract Differential-pulse anodic stripping voltammetric and differential pulse polarographic techniques were adapted to an on-line analytical system to measure trace levels of metals in a waste- water stream. Chromium, nickel, zinc, cadmium, lead and copper were determined automatically for several days to characterize a wastewater stream and detection limits were typically near 50 μg l −1 .

Development and Operation of a Unique Conversion/Solidification Process for Highly Radioactive and Fissile Uranium

A unique evaporation/thermal denitration process was developed, operated, and maintained successfully to permit the solidification and safe storage of --1000 kg of highly radioactive and fissile uranium, containing --75% /sup 235/U, --10% /sup 233/U, and --140 ppm /sup 232/U. The project, called the Consolidated Edison Uranium Solidification Program, was carried out to prepare a stable uranium form for long-term, safe storage. During the project, the uranium nitrate solution was divided into --400 batches, which were successfully processed. Details of the process development, equipment maintenance, and operating expertise are described.