|About this Abstract
||Part C-2: Gordon Ritcey Symposium: Advances in Hydrometallurgical Solution Purification Separations, sponsored by Purolite
||Keeping Mine-Water Membranes Clean
||Steve Paul Chesters, Max Fazel, Phil Morton
|On-Site Speaker (Planned)
||Steve Paul Chesters
Membrane technologies are capable of treating mine waste waters to produce clean permeate water for reuse and a concentrate stream that can be used for valuable metals recovery. In this paper the authors have researched and identified over 350 operational membrane plant in mines worldwide. Reverse Osmosis (RO) nano-filtration (NF) and ultra-filtration (UF) technology is increasingly being adopted. 69% of these plant are in gold and copper mines. In precious metal mines, waste water can be concentrated using membrane plant so additional metals can be recovered from barren liquor. Acid mine drainage (AMD) is increasingly treated and then reused or sent off site as a valuable resource for domestic and agricultural use. The wholesale adoption of membrane technology is hampered by the potential for rapid membrane fouling and calcium sulphate (gypsum) scale deposition. The authors have embarked on research project to investigate calcium sulphate scale formation at alakilne and acidic pH and in the presence of a variety of soluble metals. New techniques for preventing sulphate scale and to clean fouled membranes have been investigated and the results are presented.
||Planned: At-meeting proceedings