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Application of SLM extraction for investigation of metal-humic acid bindings

In English

Författare

Summary, in English

Supported liquid membrane (SLM) extraction of Cu(II), with di(2-ethylhexyl) phosphate in kerosene as organic phase, has been studied using a flat PTFE membrane. The influence of donor phase flow rate on the extraction efficiency and the mass transfer coefficient was investigated. The dependence of extraction efficiency of Cu(II) on the presence of the humic acids (HA) in donor phase was also investigated. The extraction efficiency decreases with increasing of humic acids concentration in donor phase, due to interaction of copper ions with humic acids. Fraction of Cu(II) binding with humic acids in donor phase was calculated using the theory of mass transfer kinetics for analytical enrichment using SLM extraction formulated by Jonsson et al. We have shown that SLM extraction can be used as a method for investigation of metal-humic acid bindings. The obtained calculated values of the binding of copper to humic acids in presence of 10 and 20 mg(.)dm(-3) humic acids in donor phase are 25.6 and 55.8%, respectively.

Publiceringsår

2002

Språk

Engelska

Sidor

247-251

Publikation/Tidskrift/Serie

Desalination

Volym

148

Issue

1-3

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Analytical Chemistry

Nyckelord

  • metal-humic acids interaction
  • SLM extraction
  • humic acids
  • efficiency
  • extraction

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1873-4464