Membrane recycling in the liquid surfactant membrane process

Journal Article · Thu Jul 01 00:00:00 EDT 1993 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00019a017· OSTI ID:6047860

Abou-Nemeh, I; Van Peteghem, A P ^[1]

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1. Univ. of Gent, Zwijnaarde (Belgium). Lab. for Non-Ferrous Metallurgy

A study has been conducted to investigate the influence of membrane recycling on the kinetics of metal permeation and emulsion stability in the liquid surfactant membrane process. The analogous stages of the industrial process, i.e., emulsification, permeation, settling, and splitting, have been reproduced, however, so far on a laboratory scale. It has been revealed that after two cycles of the membrane circulation, the kinetics of metals extraction and emulsion stability have been drastically affected. Chemical and instrumental analysis of the membrane have shown considerable losses in the surfactant (Span 80) during cobalt extraction, while the carrier bis(2-ethylhexyl) phosphoric acid (D2EHPA) has not been affected. This fact has been mainly attributed to the surfactant chemical instability during exploitation and particularly in acidic media.

• OSTI ID: 6047860
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 32:7; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
COBALT
COLLOIDS
DISPERSIONS
ELEMENTS
EMULSIONS
ENERGY CONSERVATION
KINETICS
MANAGEMENT
MATERIALS RECOVERY
MEMBRANES
METALS
PERFORMANCE
PERMEABILITY
PROCESSING
RECYCLING
SEPARATION PROCESSES
STABILITY
SUPPORTED LIQUID MEMBRANES
SURFACTANTS
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING