Abstract
The enhanced ozonation of 2-mercaptothiazoline (2-MT) with ultraviolet (UV) radiation in the acid-based electroplating solution of the printed wiring board industry was studied. The substrate prescription of the electroplating solution is with high concentrations of copper sulfate, sulfuric acid, and chloride ions. Note that the contribution of the present work includes investigation of the effect of UV radiation and construction of the refined model for the O3/UV treatment of 2-MT. The catalysis of UV radiation is found to be significant for the enhancement of the mineralization rate in the ozonation of 2-MT. Furthermore, the multistep reaction kinetics has been proposed to describe the concentration variations of 2-MT, total organic carbons, dissolved ozone, and off-gas ozone in the course of ozonation. This comprehensive kinetics for the ozonation of 2-MT combined with UV radiation is developed in association with the previous study of the sole ozonation of 2-MT in the electroplating solution. The enhancement factor of the gas−liquid mass transfer of ozone is simultaneously considered by the ozonation model. The obtained results can provide useful information for modeling the removal of additives such as 2-MT in the electroplating solution of the printed wiring board industry by the ozonation with 254-nm UV light radiation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
