Sustainable separation of Cu(II) and Cd(II) from aqueous solution by using solvent extraction technique with di-2-ethylhexylphosphoric acid (D2EHPA) as carrier: optimization study
| Autor: | Norli Ismail, Rasyidah Alrozi, Umi Nurnabilah Osman, Mohamad Anuar Kamaruddin |
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| Rok vydání: | 2019 |
| Předmět: |
liquid-liquid extraction (LLE)
separation Metal ions in aqueous solution 0208 environmental biotechnology chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Cu(II) 01 natural sciences Metal chemistry.chemical_compound lcsh:Water supply for domestic and industrial purposes Tributyl phosphate 0105 earth and related environmental sciences Water Science and Technology lcsh:TD201-500 Cadmium Aqueous solution di-2-ethylhexyphosphoric acid (D2EHPA) Extraction (chemistry) Fractional factorial design Cd(II) Copper 020801 environmental engineering chemistry visual_art visual_art.visual_art_medium sustainable Nuclear chemistry |
| Zdroj: | Applied Water Science, Vol 9, Iss 6, Pp 1-12 (2019) |
| ISSN: | 2190-5495 2190-5487 |
| DOI: | 10.1007/s13201-019-1008-7 |
| Popis: | In wastewater treatment field, physicochemical techniques containing conservative substance such as metal or substance that are non-biodegradable are typically employed. However, these techniques have their own drawbacks and none of them is universal in treating all kinds of metal present in the wastewater. Separation procedure is known to be very suitable for the separation and recovery of metal ions. The solvent extraction or liquid–liquid extraction, LLE, was opted in this study to identify the influencing factors on the extraction of cadmium(II) and copper(II) ions from aqueous solution by using soybean-based oil as organic solvent. The experiment was approached using fractional factorial design to determine the significance of six factors which are concentration of di-2-ethylhexylphosphoric acid (D2EHPA), concentration of tributyl phosphate (TBP), shaking time, the concentration of Na2SO4, O/A phase ratio and aqueous pH. The results have shown that %E shows that Cu(II) was obtained in the range from 35.77 to 91.81%, while the result obtained from the factorial plot of screening experiment shows that the interaction effect AB (shaking time × [D2EHPA]), CE ([TBP] × O/A) and DF ([Na2SO4] × pH) influences significantly the Cu(II) %E. Meanwhile, %E for a sample containing Cd(II) ion was obtained in a range from 54.77 to 87.35%. |
| Databáze: | OpenAIRE |
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