1. bookVolume 9 (2007): Issue 2 (January 2007)
Journal Details
License
Format
Journal
First Published
03 Jul 2007
Publication timeframe
4 times per year
Languages
English
access type Open Access

Pigments precipitated from chromate post-galvanic solutions in emulsion systems

Journal Details
License
Format
Journal
First Published
03 Jul 2007
Publication timeframe
4 times per year
Languages
English

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

Krysztafkiewicz A.: Modified calcium silicates as active rubber fillers, J. Mater. Sci., 1987, 22, 478.Search in Google Scholar

Krysztafkiewicz A., Modified zinc silicate - an active rubber activator and filler, J. Mater. Sci., 1988, 23, 2407.Search in Google Scholar

Krysztafkiewicz A., Werner R., Lipska K. L., Jesionowski T.: Effect of silane coupling agents on properties of precipitated sodium-aluminium silicates, Colloids Surf. A, 2001, 182, 73.Search in Google Scholar

Klapiszewska B., Krysztafkiewicz A., Jesionowski T.: Pigment Resin Technol., 2005, 34, 139.Search in Google Scholar

Lambourne R., Strivens T. A.: Pain and Surface Coating, Woodhead Publishing Ltd., Cambridge, 1999.Search in Google Scholar

Endriß H.: Inorganic Coloured Pigments Today, Verlag, Hannover, 1998.Search in Google Scholar

Michalska I., Krysztafkiewicz A., Bogacki M. B., Jesionowski T.: Preparation and characterization of precipitated zinc silicate, J. Chem. Technol. Biot., 2003, 78, 452.Search in Google Scholar

Klapiszewska B., Krysztafkiewicz A., Jesionowski T.: Highly dispersed green silicate and oxide pigments precipitated from post-galvanic refuse, Environ. Sci. Technol., 2003, 37, 4811.Search in Google Scholar

Recommended articles from Trend MD

Plan your remote conference with Sciendo