| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
New Directions in Mineral Processing, Extractive Metallurgy, Recycling and Waste Minimization: An EPD Symposium in Honor of Patrick R. Taylor
|
| Presentation Title |
Electrochemical Splitting of Salt Bearing Effluents |
| Author(s) |
Abdul Rauf Sheik, Sujana M. Gude, Barsha Marandi, Kali Sanjay, Chinmaya Kumar Sarangi, S Sharmila |
| On-Site Speaker (Planned) |
Sujana M. Gude |
| Abstract Scope |
Most of the hydrometallurgical processes generate considerable amount of salt bearing effluents due to acid and alkali reactions in various unit operations. These effluents though may not be toxic, owing to presence of high concentrations of salt, cannot be recycled into the process. These salts can be split back to produce acid and alkali for recycling in the process. The salt bearing effluents through electrochemical splitting to produce alkali and acid for recycling has been investigated with industrial effluents. In the present work, sodium sulphate and ammonium sulphate bearing effluents were electrochemically split to recover sodium hydroxide and ammonium hydroxide respectively while dilute sulphuric acid was recovered. Several ion-exchange membranes have been tested for their performance. The effect of variation in the operating conditions such as concentration of catholyte, feed and anolyte; current density, etc on the current efficiency and energy consumption have been studied. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Recycling and Secondary Recovery, Other, Other |