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Separation of used coolants from high-pressure aluminium alloys die-casting via turbidimetric method

Wal Rafał, Polowczyk Izabela

Ecological Chemistry and Engineering. S

2024

Vol. 31, nr 3

339--351

The growth of the automotive industry and increased efforts to reduce the environmental impact of transportation require the use of more and more aluminium components in the production of new cars. The process of high-pressure die casting of aluminium makes it possible to meet the goals, but it requires the use of coolants based on oil and wax emulsions that are difficult to dispose of. A method for demulsification of real wastewater samples from the high pressure die casting process was developed and evaluated. The optimal parameters for conducting the separation process were determined, and the changes occurring in the emulsion being separated were analysed.

Separation of inorganic nanopowders using the concentration gradient method

Cieślik I., Żmija J., Ohams M.

Polimery

2012

T. 57, nr 7-8

558-561

In the present paper a modified method to separate inorganic nanopowders using the concentration gradient method has been presented. Extraction of individual fractions as a non-destructive method has been discussed. The technique in question allows obtaining a grain size that varies from several micrometers down to several nanometers using simple devices and within a short time.

Artykuł przedstawia technikę rozdzielania nanoproszków nieorganicznych za pomocą zmodyfikowanej metody gradientu stężeń na przykładzie boranu glinowo-itrowego. Opisana metoda separacji jest metodą nieniszczącą. Pozwala w krótkim czasie oraz za pomocą prostych urządzeń laboratoryjnych uzyskać frakcje nanocząstek o rozmiarach od kilkunastu mikrometrów do kilku nanometrów.