Recovery of copper from process waters by nanofiltration and reverse osmosis

Edit Cséfalvay, Viktor Pauer, P. Mizsey

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

Copper rejections of a nanofiltration (NF) and a reverse osmosis (RO) membrane are investigated with coppersulfate and copper-nitrate solutions as test wastewaters. The copper content of the solutions represents the typical copper ion concentration of process waters from a textile coating plant, i.e. 2 kg/m3. Experiments are performed with the test solutions on a bench-scale cross-flow membrane filtration apparatus with acid resistant flat sheet membranes. The active membrane area is 28 cm2. Isotherm experiments at 25°C are carried out. The applied conditions (e.g. pressure or pH) are in the applicable range of parameters. Permeate flux, conductivity, pH, and copper concentration of the permeate are measured to determine the membrane characteristic and rejection. The transport through the membrane is modeled in the function of time with the solution-diffusion model and in the function of yield with the modified osmotic pressure model. Modeled data is then compared to the experimental data. This comparison shows a good agreement between the measured and the modeled fluxes. Finally, the effect of anion composition on permeate flux is also studied using copper-sulfate and -nitrate at a constant copper content of 2 kg/m3. However, no influence of the anions on the permeate flux and copper rejection can be observed.

Original languageEnglish
Pages (from-to)132-142
Number of pages11
JournalDesalination
Volume240
Issue number1-3
DOIs
Publication statusPublished - May 15 2009

Fingerprint

Nanofiltration
Reverse osmosis
Copper
copper
Recovery
Water
membrane
Membranes
Fluxes
Nitrates
Anions
anion
Negative ions
Copper Sulfate
Osmosis membranes
nitrate
process water
reverse osmosis
Isotherms
Textiles

Keywords

  • Copper
  • Modified osmotic pressure model
  • Nanofiltration
  • Process water
  • Reverse osmosis
  • Solution-diffusion model

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Chemistry(all)
  • Materials Science(all)
  • Water Science and Technology

Cite this

Recovery of copper from process waters by nanofiltration and reverse osmosis. / Cséfalvay, Edit; Pauer, Viktor; Mizsey, P.

In: Desalination, Vol. 240, No. 1-3, 15.05.2009, p. 132-142.

Research output: Contribution to journalArticle

Cséfalvay, Edit ; Pauer, Viktor ; Mizsey, P. / Recovery of copper from process waters by nanofiltration and reverse osmosis. In: Desalination. 2009 ; Vol. 240, No. 1-3. pp. 132-142.
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