A4 Conference proceedings

Electrochemical treatment of mining waters


Open Access publication

Publication Details
Authors: Mamelkina Maria A., Vehmaanperä Paula, Tuunila Ritva, Sillanpää Mika, Häkkinen Antti
Publication year: 2019
Language: English
Title of parent publication: IMWA 2019 Conference – Mine Water: Technological and Ecological Challenges
Start page: 212
End page: 216
Number of pages: 5
ISBN: 978-5-91252-145-4
JUFO-Level of this publication: 0
Open Access: Open Access publication

Abstract

This research is intendent to study the removal of cyanide, sulfate, chloride and nitrate from mining waters using electrochemical treatment. Tests were performed in batch and continuous modes with real and synthetic mining waters. Electrolysis and electrocoagulation with different electrodes materials (iron, aluminum for electrocoagulation, Ti-coated and carbon for electrolysis) resulted in favouring of anions removal. Additionally, performances comparison of electrolysis and electrocoagulation for cyanide removal was completed. Sulfate removal of 95% was achieved using electrocoagulation with iron anode and aluminum cathode. Electrocoagulation favored the almost complete removal of nitrate regardless the electrodes material tested, when electrooxidation was found to be inefficient for treatment of nitrate-rich waters. Cyanide concentration decreased from 100 mg/L to 1 mg/L during the electrocoagulation with iron anode in 5 min treatment time. A review on total suspended solids (TSS) removal from waters by electrochemical techniques is also provided.


Last updated on 2020-20-03 at 10:03