Amine-based extraction recovery of Cu(II) from aqueous solutions in the presence of EDTA. Equilibrium studies

Journal Article · Mon Nov 01 00:00:00 EST 1999 · Separation Science and Technology

DOI:https://doi.org/10.1081/SS-100100824· OSTI ID:20017410

Juang, R S; Chen, Y J; Huang, I P

The distribution ratios of Cu(II) between kerosene solutions of Aliquat 336 and water containing EDTA (ethylenediaminetetraacetic acid) are measured. Experiments were performed as a function of the pH, the concentration of Cu(II), the concentration ratio of EDTA to Cu(II), and the concentration of amine. It is shown that the distribution ratios first increase with pH and then decrease with further increase in pH up to 7.0. The effect of temperature on the extraction was studied, and the enthalpy of the extraction reaction was determined. Finally, the nonideal behavior of the organic phase is discussed.

• Research Organization: Yuan Ze Univ., Chung-Li (TW)
• OSTI ID: 20017410
• Journal Information: Separation Science and Technology, Vol. 34, Issue 15; Other Information: PBD: Nov 1999; ISSN 0149-6395
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
54 ENVIRONMENTAL SCIENCES
COPPER
SOLVENT EXTRACTION
AMINES
EDTA
SOLVENT PROPERTIES
REACTION HEAT
WATER TREATMENT
WASTE WATER
REMEDIAL ACTION
SOILS