Removal of Cu(II) in water by polymer enhanced ultrafiltration: Influence of polymer nature and pH

Olga D. Kochkodan, Viktor Kochkodan, Virender K. Sharma

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This study presents an efficient removal of Cu(II) in water using the polymer enhanced ultrafiltration (PEUF) method. Polymer of different molecular weight (MW) (polyethyleneimine (PEI), sodium lignosulfonates (SLS) and dextrans) were investigated to evaluate efficiency in removal of Cu(II) in water by the PEUF method. The decomposition of Cu(II)-polymer complex was also evaluated in order to reuse polymers. Cu(II) complexation depends on the MW of chelating polymer and the pH of feed solution. It was found that the Cu(II) rejection increased with the polymer dosage with high removal of Cu(II) when using PEI and SLS at a 10:20 (mg/mg) ratio ([Cu(II)]:[polymer]). It was found that the maximum chelating capacity was 15 mg of Cu(II) per 20 mg of PEI. The Cu(II)–PEI complex could be decomposed by acid addition and the polymer could be efficiently reused with multiple complexation–decomplexation cycles. A conceptual flow chart of the integrated process of efficient removal of Cu(II) by PEUF method is suggested.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
DOIs
Publication statusAccepted/In press - 20 Oct 2017

Fingerprint

Ultrafiltration
Polymers
Water
Chelation
Molecular weight
Sodium
Dextran
Complexation
Decomposition
Acids

Keywords

  • copper
  • dextran
  • polyethyleneimine
  • Polymer enhanced ultrafiltration
  • sodium lignosulphonates
  • water purification

ASJC Scopus subject areas

  • Environmental Engineering

Cite this

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title = "Removal of Cu(II) in water by polymer enhanced ultrafiltration: Influence of polymer nature and pH",
abstract = "This study presents an efficient removal of Cu(II) in water using the polymer enhanced ultrafiltration (PEUF) method. Polymer of different molecular weight (MW) (polyethyleneimine (PEI), sodium lignosulfonates (SLS) and dextrans) were investigated to evaluate efficiency in removal of Cu(II) in water by the PEUF method. The decomposition of Cu(II)-polymer complex was also evaluated in order to reuse polymers. Cu(II) complexation depends on the MW of chelating polymer and the pH of feed solution. It was found that the Cu(II) rejection increased with the polymer dosage with high removal of Cu(II) when using PEI and SLS at a 10:20 (mg/mg) ratio ([Cu(II)]:[polymer]). It was found that the maximum chelating capacity was 15 mg of Cu(II) per 20 mg of PEI. The Cu(II)–PEI complex could be decomposed by acid addition and the polymer could be efficiently reused with multiple complexation–decomplexation cycles. A conceptual flow chart of the integrated process of efficient removal of Cu(II) by PEUF method is suggested.",
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