<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>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.</p></abstract>

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.

Pigments precipitated from chromate post-galvanic solutions in emulsion systems

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

Polish Journal of Chemical Technology

{"article-title":"Pigments precipitated from chromate post-galvanic solutions in emulsion systems"}

Studies were conducted on the production of chromium(III) silicates, the green pro-ecological pigments. The pigments were precipitated from sodium silicate and...

Pigments precipitated from chromate post-galvanic solutions in emulsion systems

Online veröffentlicht: 19. Okt. 2007

Seitenbereich: 27 - 29

DOI: https://doi.org/10.2478/v10026-007-0019-6

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

This content is open access.

Pigments precipitated from chromate post-galvanic solutions in emulsion systems

Online veröffentlicht: 19. Okt. 2007

Seitenbereich: 27 - 29

DOI: https://doi.org/10.2478/v10026-007-0019-6

Schlüsselwörtergreen pigments, precipitated chromium(III) silicates, emulsion system, post-galvanic wastes

This content is open access.

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