|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deriving Value from Challenging Waste Streams: Recycling and Sustainability Joint Session
||B-10: Evaluation of the Occurrence of Fouling and Scaling on the Membrane HDX 200 for the Treatment of the Effluent of Brass Electrodeposition with EDTA as Complexing Agent
||Kayo Santana Barros, Jorge Alberto Soares Tenório, Denise Crocce Romano Espinosa
|On-Site Speaker (Planned)
||Denise Crocce Romano Espinosa
Considering the risks involving the use of cyanide, other complexing agents have been evaluated for the treatment by electrodialysis of the effluent of brass electrodeposition and among them, EDTA is interesting since it has already been tested for many years to separate ions. The main objective of the present paper was to evaluate the occurrence of fouling and scaling on the anionic membrane HDX 200 surface by the construction of chronopotentiometric curves and speciation diagrams in different conditions (pH between 9-13, proportion of cupric ions of 30, 50, 70 and EDTA/copper molar ratio between 2–3.5). According to the results, it was observed fouling occurrence with the increase of pH and with the increase of zinc. However, the EDTA increase was not responsible for the occurrence of fouling or scaling, which was also observed by the speciation diagrams.