Pigments precipitated from chromate post-galvanic solutions in emulsion systems

• Autorzy: Klapiszewska B. , Krysztafkiewicz A. , Jesionowski T.
• Języki publikacji: EN

Abstrakty

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.

Słowa kluczowe

EN

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

PL

pigment zielony; pigmenty; krzemian chromu strącany; układ emulsyjny; odpady pogalwaniczne

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2007
• Tom: Vol. 9, nr 2
• Strony: 27--29
• Opis fizyczny: Bibliogr. 8 poz., rys., tab.

Twórcy

autor

Klapiszewska B.

autor

Krysztafkiewicz A.

autor

Jesionowski T.

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

Bibliografia

• 1. Krysztafkiewicz A.: Modified calcium silicates as active rubber fillers, J. Mater. Sci., 1987, 22, 478.
• 2. Krysztafkiewicz A., Modified zinc silicate - an active rubber activator and filler, J. Mater. Sci., 1988, 23, 2407.
• 3. 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.
• 4. Klapiszewska B., Krysztafkiewicz A., Jesionowski T.: Pigment Resin Technol., 2005, 34, 139.
• 5. Lambourne R., Strivens T. A.: Pain and Surface Coating, Woodhead Publishing Ltd., Cambridge, 1999.
• 6. Endriß H.: Inorganic Coloured Pigments Today, Verlag, Hannover, 1998.
• 7. Michalska I., Krysztafkiewicz A., Bogacki M. B., Jesionowski T.: Preparation and characterization of precipitated zinc silicate, J. Chem. Technol. Biot., 2003, 78, 452.
• 8. Klapiszewska B., Krysztafkiewicz A., Jesionowski T.: Highly dispersed green silicate and oxide pigments precipitated from post-galvanic refuse, Environ. Sci. Technol., 2003, 37, 4811.