Liquid-liquid equilibria for aqueous systems containing N,N-diethylmethylamine and sodium chloride or sodium sulfate

Journal Article · Wed Apr 01 04:00:00 EST 1992 · Journal of Chemical and Engineering Data; (United States)

DOI:https://doi.org/10.1021/je00006a032· OSTI ID:5022232

Ting, A M; Lynn, S; Prausnitz, J M ^[1]

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1. Chemical Engineering Dept., Chemical Sciences Div., Lawrence Berkeley Lab., Univ. of California, Berkeley, CA (US)

Liquid-liquid equilibria were measured to study the feasibility of using N, N-diethylmethylamine (DEMA) for extractive crystallization of sodium chloride or sodium sulfate. This paper reports that the experimental results show that DEMA selectively extracts water from saturated sodium chloride solution at low temperatures (5-10{degrees} C), causing sodium chloride crystals to precipitate. DEMA also selectively extracts water from saturated sodium sulfate solution at moderate temperature (21-25{degrees} C), precipitating sodium sulfate decahydrate.

• OSTI ID: 5022232
• Journal Information: Journal of Chemical and Engineering Data; (United States), Journal Name: Journal of Chemical and Engineering Data; (United States) Vol. 37:2; ISSN 0021-9568; ISSN JCEAA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
400201 -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
AMINES
AQUEOUS SOLUTIONS
CHEMICAL REACTION KINETICS
CHLORIDES
CHLORINE COMPOUNDS
CRYSTALLIZATION
DISPERSIONS
EQUILIBRIUM
EXTRACTIVE METALLURGY
FEASIBILITY STUDIES
FLUIDS
HALIDES
HALOGEN COMPOUNDS
KINETICS
LIQUIDS
METALLURGY
MIXTURES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
REACTION KINETICS
SEPARATION PROCESSES
SODIUM CHLORIDES
SODIUM COMPOUNDS
SODIUM SULFATES
SOLUTIONS
SULFATES
SULFUR COMPOUNDS