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THE APPLICATION OF LIQUID MEMBRANE PROCESSES IN WASTEWATER TECHNOLOGY. PART 1. SEPARATION, CONCENTRATION AND THE SELECTIVE RECOVERY OF COPPER IONS FROM DILUTE AQUEOUS SOLUTIONS AND WASTEWATERS

DOI: 10.1615/ICHMT.1997.IntSymLiqTwoPhaseFlowTranspPhen.260
6 pages

Viorica Dalea
"Politehnica" University of Timisoara; Research Institute for Wastewater Treatment - Branch of Timisoara

Smaranda Masu
Research Institute for Wastewater Treatment - Branch of Timisoara

V. Cocheci
"Politehnica" University of Timisoara; Research Institute for Wastewater Treatment - Branch of Timisoara

Résumé

The paper deals with results obtained by using of Emulsion Liquid Membrane (ELM) for the treatment of wastewaters containing 0.1 − 1.0 g/L Cu2+. The efficiencies of double emulsion AIII/UII/AI (aqueous feed phase/organic phase/aqueous receiving phase) for the treatment of wastewaters were followed by analyzing of parameters: type and quantity of tensioactive agent, necessary for primary emulsion AI/UII; type and quantity of carrier agent; type and quantity of receiving agent and hydrodynamic regime applied (rotation speed and time contact between AI/UII with wastewater-AIII). Variants of ELMs are proposed which due to synergetic effects of parameter mentioned above give wastewater treatment efficiencies up to 50−87 %, in conditions of minimum presence of negative phenomenon of osmosis (swelling of emulsion AI/UII).

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