Adsorbents for iron removal obtained from vermiculite.

Autor:	Węgrzyn, Agnieszka
Další autoři:	Chmielarz, Lucjan Zjeżdżalka, Paweł Kowalczyk, Andrzej, 1954- Jabłońska, Magdalena Baldrich Tolosa, Xavier Michalik, Marek
Jazyk:	angličtina
Předmět:	vermikulit adsorpce vermiculite adsorption články journal articles acid treatment iron removal
Druh dokumentu:	Non-fiction
ISSN:	1214-9705
Abstrakt:	Abstract: In presented work, raw, expanded and acid treated vermiculites were used as low-cost and active adsorbents for reducing of environmental pollution with heavy metals. Acid treatment was performed at elevated temperature (95°C) for 2 and 24 h in solution of HNO3. Adsorption capacity towards Fe3+ was studied in column, semi-batch and batch mode. It was shown that all samples are effective in removal of heavy metals; however adsorption mechanism is based not only on ion exchange of interlayer cations but also precipitation/deposition processes. Starting material and modified samples as well as spent adsorbents were characterized with respect to the vermiculite structure using X-ray diffraction method.
Databáze:	Katalog Knihovny AV ČR
Externí odkaz:	Plný text