A Shiny New Day for Univertical
Following $5.5 million in clean-up costs shared by Univertical (Angola, IN) and state and local governments, Chuck Walker’s company is ready to expand operations in supplying anodes and chemicals for the worldwide plating industry.
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Read MoreNASF/AESF Foundation Research Project #122: Electrochemical Approaches to Treatment of PFAS in Plating Wastewater - 7th Quarterly Report
The NASF-AESF Foundation Research Board has selected a project on addressing the problem of PFAS and related chemicals in plating wastewater streams, studying PFAS destruction via electrooxidation and electrocoagulation. Our last report described the results from experiments of EO with a Magnéli phase Ti4O7 anode on the degradation of eight perfluoroalkyl acids (PFAAs). In this seven quarter report, we describe work to further explore how the degradation of different PFAAs are related to their molecular structures.
Read MoreNASF/AESF Foundation Research Project #122: Electrochemical Approaches to Treatment of PFAS in Plating Wastewater - 9th Quarterly Report
The NASF-AESF Foundation Research Board selected a project addressing the problem of PFAS and related chemicals in plating wastewater streams. This report covers the ninth quarter of work (January-March 2023). In this report, we describe our work on evaluating the performance of PFAS degradation by electrooxidation using surface fluorinated Ti4O7 anodes in batch mode.
Read MoreNASF/AESF Foundation Research Project #122: Electrochemical Approaches to Treatment of PFAS in Plating Wastewater - 12th Quarterly Report
This NASF-AESF Foundation research project report covers the 12th quarter of project work (October – December 2023) at the University of Georgia. In our previous report, we described our work on performance and effect of surface fluorinated Ti4O7 anodes on PFAS degradation in reactive electrochemical membrane (REM) mode. This quarter, our experiments involved utilizing porous Ti4O7 plates serving both as anodes and membranes. Tests compared pristine and F-18.6 Ti4O7 anodes at current densities of 10 mA/cm2 and 40 mA/cm2. This 12th quarterly report discusses the mechanisms of the effects on EO performance by anode surface fluorination.
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HPLC Study on Copper Plating Chemistry
In a typical acid copper plating bath, additives, such as grain refiners, brighteners and carriers, are used to deliver a smooth, bright and hard deposit. In order to ensure high quality plating, it is helpful to have a better understanding of the behavior of these additives in the bath. In this paper, a high performance liquid chromatography (HPLC) study of these additives is discussed, in an attempt to answer the following questions: Do these additives exist in the solution as a complex mixture of derivatives? Are there interactions between them? Are there any decomposition species accumulated in the plating process? How can we better control the plating process? The results indicate that the brightener exists in the bath with a series of its derivatives, while the grain refiner is in a simple form. When the brightener and the grain refiner were mixed in solution, some new species, which have different retention times in HPLC, were generated. Combined with a Hull Cell study, the impacts of the new species and the concentrations of additives on the plating process were investigated. Decomposition of the plating solution was also examined.
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Read MoreEpisode 45: An Interview with Chandler Mancuso, MacDermid Envio Solutions
Chandler Mancuso, technical director with MacDermid Envio discusses updating your wastewater treatment system and implementing materials recycling solutions to increase efficiencies, control costs and reduce environmental impact.
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