Application of reduced chromate solutions for precipitation of silicate pigments

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

Abstrakty

EN

New method was worked out for utilisation of postgalvanic refuse containing chromates(VI) Chromates contained in the refuse solution were reduced to chromium(III) compounds using hydrogen peroxide or hydrazine. The obtained chromium(III) hydroxide was subsequently passed to a solution using sulphuric acid. The studies pertained production of pigments, chromium(III) silicates obtained by precipitation from solutions of chromium metasilicate and chromium sulphate. The obtained pigments were analysed using, modern investigative techniques: SEM technique in studies on morphology and DLS technique in studies on particle size and particle tendency to form agglomerate structure.

Słowa kluczowe

EN

chromium silicates pigments; surface morphology; SEM and DLS techniques

PL

pigmenty chromowo krzemowe; morfologia powierzchni; technika SEM; mikroskop elektronowy rastrowy; technika DLS

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2003
• Tom: Vol. 5, nr 4
• Strony: 31--33
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Klapiszewska B.

autor

Krysztafkiewicz A.

autor

Jesionowski T.

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

Bibliografia

• (1) Stefanowicz, T., Recovery of metais and ot her raw materials from refuse and postgalvanic remains (in Polish), Wydawnictwo PP, Poznań, 1992.
• (2) Grudzińska, E., Zieliński, J., Bukowski, A., Trends in neutralisation and utilisation of postneutralisation refuse from plating workshops (in Polish), Chemik, 1997, 40, 362.
• (3) Stępniak, S., Silidification of ecologically harmful postgalvanic slime (in Polish), Inżynieria Powierzchni, 1997, 2/3, 33.
• (4) Pikuiska, M., Lis, A., Majewski, P., Tunik, F., Potential applications of postgalvanic slime (in Polish), Powłoki Ochronne, 1997, 5/6, 84.
• (5) Stefanowicz, T., Management of water and refuse in electrochemical industry (in Polish), Wydawnictwo PP, Poznań, 2001.
• (6) Kieszkowski, M., Refuse detoxication and recovery of raw materiais in plating and varisher's workshops (in Polish), Powłoki ochronne, 1993, 5/6, 48.
• (7) Klapiszewska, B., Krysztafkiewicz, A., Jesionowski, T., Highly dispersed green silicate and oxide pigments precipitated from postgalvanic refuse, Environmetnal Sci. Technol. 2003 (in print).