|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deriving Value from Challenging Waste Streams: Recycling and Sustainability Joint Session
||An Electrochemical Procedure for Copper Removal from Regenerated Pickling Solutions of Steel Plants
||Esra Karakaya, Mustafa Serdal Aras, Sedef Cift Karagul, Merve Kolay Ersoy, Ishak Karakaya
|On-Site Speaker (Planned)
Pickling is a treatment to remove oxide layer, rust, scale or other impurities from surfaces of metals. Hydrochloric acid is used for plain carbon or low alloy steel pickling. When the concentration of copper in the pickling solution exceeds about 100 ppm, reversion may take place and randomly plating of copper onto the steel strips occur. Furthermore, efficiency of pickling decreases as copper content increases. The reversion may be delayed to higher Cu concentrations by adding fresh acid. Increased acid consumption only delays the time to discard the solution but increases the cost and hazardous effect to environment. An experimental procedure has been conducted to remove copper from pickling solution to reduce the concentration below 100 ppm. Effects of applied current density, copper concentration and electrolysis duration on copper deposition were studied. Current density was determined as the most effective parameter to remove copper from the regenerated pickling solutions.