Physicochemical characteristics of chromium waste deriving from the modified process of sodium chromate (VI) production

• Autorzy: Jarosiński A. , Natanek W.
• Języki publikacji: EN

Abstrakty

EN

Chromium waste, a by-product of sodium chromate(VI) production is produced in large quantities worldwide. This waste contains the impurities of environmental concern such as water-soluble compounds of Cr(VI) and other chromium compounds. This study was undertaken to obtain a detailed information on the physicochemical properties of chromium waste deriving from the modified process of sodium chromate obtaining, the basic intermediate product from which other chromium compounds are obtained. Knowledge of the physicochemical characteristics of the tested waste material should allow the choice of a rational way of its utilization and determination of the possibilities of chromium concentrate obtaining from initial waste material. The microscopic analysis, X-ray diffraction and infrared spectroscopy method were applied to determine the phase composition. On the basis of the chemical composition and the quantitative results of the phase analysis the quantitative composition of the discussed material was determined. It was found that the chromium waste from the modified process of sodium chromate (VI) receiving differs in the physico-chemical properties in relation to the waste coming from the dolomite method.

Słowa kluczowe

EN

chromium waste; modified process; sodium chromate (VI)

PL

odpady chromowe; modyfikacja; chromian sodu

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2006
• Tom: Vol. 8, nr 3
• Strony: 122--124
• Opis fizyczny: Bibliogr. 4 poz., rys., tab.

Twórcy

autor

Jarosiński A.

autor

Natanek W.

• Cracow University of Technology, Institute of Chemistry and Inorganic Technology, ul. Warszawska 24, 31-155 Kraków,

Bibliografia

• (1) Kowalski Z.: Technologie związków chromu, Kraków 2002.
• (2) Jarosiński A.: Zagadnienie poprawy efektywności wykorzystania rud chromu w aspekcie ochrony środowiska i zasobów surowcowych. Charakterystyka mineralogiczna, Chemia Stosowana 1985, 329 - 336, 3-4.
• (3) Jarosiński A., Mączka W.: Technologiczne aspekty wykorzystania błota pochromowego, Gospodarka Surowcami Mineralnymi, 2001, 89 - 96, 17.
• (4) Jarosiński A., Wójtowicz A.: Analiza fazowa produktów spiekania odpadów pochromowych, Fizykochemiczne Problemy Mineralurgii, 1995, 119 - 126, 29.