Extraction of Cu(II) from aqueous solutions by vegetable oil-based organic solvents

Various types of vegetable oil-based organic solvents (VOS), i.e. vegetable oils (corn, canola, sunflower and soybean oils) with and without extractants (di-2-ethylhexylphosphoric acid (D2EHPA) and tributylphosphate (TBP)), were investigated into their potentiality as greener substitutes for the con...

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Bibliographic Details
Published in:Journal of hazardous materials 2010-09, Vol.181 (1), p.868-872
Main Authors: Chang, Siu Hua, Teng, Tjoon Tow, Ismail, Norli
Format: Article
Language:English
Subjects:
Applied sciences
Aqueous solutions
Copper - isolation & purification
Corn
Cu(II)
Di(2-ethylhexyl)phosphoric acid (D2EHPA)
Exact sciences and technology
Extraction
EXTRACTIVE METALLURGY
Green Chemistry Technology
Helianthus
Isotherms
OILS
ORGANIC COMPOUNDS
Petroleum engineering
Plant Oils
Pollution
SOLUTIONS
SOLVENTS
Solvents - chemistry
Soybeans
Tributylphosphate (TBP)
Vegetable oil-based organic solvents (VOS)
Vegetable oils
Vegetables
Water Pollutants, Chemical - isolation & purification
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Summary:Various types of vegetable oil-based organic solvents (VOS), i.e. vegetable oils (corn, canola, sunflower and soybean oils) with and without extractants (di-2-ethylhexylphosphoric acid (D2EHPA) and tributylphosphate (TBP)), were investigated into their potentiality as greener substitutes for the conventional petroleum-based organic solvents to extract Cu(II) from aqueous solutions. The pH-extraction isotherms of Cu(II) using various vegetable oils loaded with both D2EHPA and TBP were investigated and the percentage extraction (% E) of Cu(II) achieved by different types of VOS was determined. Vegetable oils without extractants and those loaded with TBP alone showed a poor extractability for Cu(II). Vegetable oils loaded with both D2EHPA and TBP were found to be the most effective VOS for Cu(II) extraction and, thus, are potential greener substitutes for the conventional petroleum-based organic solvents.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2010.05.093