Pigments precipitated from chromate post-galvanic solutions in emulsion systems

• Authors: Beata Klapiszewska , Andrzej Krysztafkiewicz , Teofil Jesionowski
• Languages of publication: EN

Abstracts

EN

Studies were conducted on the production of chromium(III) silicates, the green pro-ecological pigments. The pigments were precipitated from sodium silicate and chromium(III) sulphate solutions in the system of two emulsions prepared in hexane in the presence of a non-ionic surfactant as an emulsifier. The chromium(III) sulphate represented a reduction product of chromate(VI) compounds present in post-galvanic wastes. The reduction agent involved metanal in an acidic medium. The obtained products were subjected to a comprehensive physicochemical analysis, their dispersive and morphological properties were determined. The precipitated green products exhibiting intense colour, were uniform and their particles manifested a low tendency to form agglomerate structures.

Keywords

EN

green pigments; precipitated chromium(III) silicates; emulsion system; post-galvanic wastes

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2007
• Volume: 9
• Issue: 2
• Pages: 27-29

Dates

published

1 - 1 - 2007

online

19 - 10 - 2007

Contributors

author

Beata Klapiszewska

• Institute of Chemical Technology and Engineering, Poznan University of Technology, pl. M. Sklodowskiej-Curie 2, 60-965 Poznań, Poland

author

Andrzej Krysztafkiewicz

• Institute of Chemical Technology and Engineering, Poznan University of Technology, pl. M. Sklodowskiej-Curie 2, 60-965 Poznań, Poland

author

Teofil Jesionowski

• Institute of Chemical Technology and Engineering, Poznan University of Technology, pl. M. Sklodowskiej-Curie 2, 60-965 Poznań, Poland

References

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• Klapiszewska B., Krysztafkiewicz A., Jesionowski T.: Highly dispersed green silicate and oxide pigments precipitated from post-galvanic refuse, Environ. Sci. Technol., 2003, 37, 4811.[Crossref]

Identifiers

DOI

10.2478/v10026-007-0019-6