Enhancing ultrafiltration with polyelectrolyte to separate heavy metal ions from multicomponent solutions
Polymer-enhanced ultrafiltration (PEUF) is an effective heavy metal separation technique due to coordinate or electrostatic bonds formed between the polymer and the metal ions. In this study, the PEUF technique was used to separate Cr(III), Cu(II), Zn(II), Ni(II), and Cd(II) ions from their equimola...
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Elsevier
2025-04-01
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| Series: | Desalination and Water Treatment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S194439862500181X |
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| author | Irena Korus |
| author_facet | Irena Korus |
| author_sort | Irena Korus |
| collection | DOAJ |
| description | Polymer-enhanced ultrafiltration (PEUF) is an effective heavy metal separation technique due to coordinate or electrostatic bonds formed between the polymer and the metal ions. In this study, the PEUF technique was used to separate Cr(III), Cu(II), Zn(II), Ni(II), and Cd(II) ions from their equimolar mixture using poly(sodium 4-styrenesulfonate) (PSS) as an ultrafiltration-enhancing polymer. The effects of selected process parameters, i.e. the molar concentration ratio of PSS/total metals (CPSS/CMs), pH, the total metal concentration (CMs), and the presence of some accompanying ions on the separation efficiency of individual metal ions were investigated. Then, the PEUF concentration was performed at selected process conditions followed by the decomplexation-ultrafiltration step performed at pH = 1 to separate the polymer and concentrated heavy metals. The process effectiveness was strongly affected by both CPSS/CMs and pH, resulting in high metal rejection coefficients (RM > 0.9) at CPSS/CMs ≥ 5 and pH ≥ 5. The presence of some coexisting ions, especially SO42−, PO43−, EDTA, and Ca2+, reduced metal retention. The PEUF concentration process enabled retention of > 96 % of the metal ions and a 6.6-fold increase in their concentration in the retentate. The decomplexation-ultrafiltration step facilitated separation of the polymer and recovery of 85 % of the concentrated metal ions. |
| format | Article |
| id | doaj-art-68e50bee1d374fbab82c044d26a53e24 |
| institution | Kabale University |
| issn | 1944-3986 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Desalination and Water Treatment |
| spelling | doaj-art-68e50bee1d374fbab82c044d26a53e242025-08-20T03:24:45ZengElsevierDesalination and Water Treatment1944-39862025-04-0132210116510.1016/j.dwt.2025.101165Enhancing ultrafiltration with polyelectrolyte to separate heavy metal ions from multicomponent solutionsIrena Korus0Department of Water and Wastewater Engineering, Silesian University of Technology, Konarskiego 18, Gliwice 44-100, PolandPolymer-enhanced ultrafiltration (PEUF) is an effective heavy metal separation technique due to coordinate or electrostatic bonds formed between the polymer and the metal ions. In this study, the PEUF technique was used to separate Cr(III), Cu(II), Zn(II), Ni(II), and Cd(II) ions from their equimolar mixture using poly(sodium 4-styrenesulfonate) (PSS) as an ultrafiltration-enhancing polymer. The effects of selected process parameters, i.e. the molar concentration ratio of PSS/total metals (CPSS/CMs), pH, the total metal concentration (CMs), and the presence of some accompanying ions on the separation efficiency of individual metal ions were investigated. Then, the PEUF concentration was performed at selected process conditions followed by the decomplexation-ultrafiltration step performed at pH = 1 to separate the polymer and concentrated heavy metals. The process effectiveness was strongly affected by both CPSS/CMs and pH, resulting in high metal rejection coefficients (RM > 0.9) at CPSS/CMs ≥ 5 and pH ≥ 5. The presence of some coexisting ions, especially SO42−, PO43−, EDTA, and Ca2+, reduced metal retention. The PEUF concentration process enabled retention of > 96 % of the metal ions and a 6.6-fold increase in their concentration in the retentate. The decomplexation-ultrafiltration step facilitated separation of the polymer and recovery of 85 % of the concentrated metal ions.http://www.sciencedirect.com/science/article/pii/S194439862500181XCompetitive separationHeavy metalsMulticomponent mixturesPolyelectrolyte-enhanced ultrafiltrationPoly(sodium 4-styrenesulfonate) |
| spellingShingle | Irena Korus Enhancing ultrafiltration with polyelectrolyte to separate heavy metal ions from multicomponent solutions Desalination and Water Treatment Competitive separation Heavy metals Multicomponent mixtures Polyelectrolyte-enhanced ultrafiltration Poly(sodium 4-styrenesulfonate) |
| title | Enhancing ultrafiltration with polyelectrolyte to separate heavy metal ions from multicomponent solutions |
| title_full | Enhancing ultrafiltration with polyelectrolyte to separate heavy metal ions from multicomponent solutions |
| title_fullStr | Enhancing ultrafiltration with polyelectrolyte to separate heavy metal ions from multicomponent solutions |
| title_full_unstemmed | Enhancing ultrafiltration with polyelectrolyte to separate heavy metal ions from multicomponent solutions |
| title_short | Enhancing ultrafiltration with polyelectrolyte to separate heavy metal ions from multicomponent solutions |
| title_sort | enhancing ultrafiltration with polyelectrolyte to separate heavy metal ions from multicomponent solutions |
| topic | Competitive separation Heavy metals Multicomponent mixtures Polyelectrolyte-enhanced ultrafiltration Poly(sodium 4-styrenesulfonate) |
| url | http://www.sciencedirect.com/science/article/pii/S194439862500181X |
| work_keys_str_mv | AT irenakorus enhancingultrafiltrationwithpolyelectrolytetoseparateheavymetalionsfrommulticomponentsolutions |