Thiouracil modified activated carbon as a sorbent for some precious and heavy metal ions

Autor:	P. Tzvetkova, L. Lakov, O. Peshev, P. Vassileva
Rok vydání:	2007
Předmět:	Sorbent Mechanical Engineering Metal ions in aqueous solution Inorganic chemistry chemistry.chemical_element Infrared spectroscopy Sorption Thiouracil Catalysis chemistry.chemical_compound chemistry Mechanics of Materials medicine General Materials Science Carbon Activated carbon medicine.drug
Zdroj:	Journal of Porous Materials. 15:593-599
ISSN:	1573-4854 1380-2224
Popis:	A new sorbent is prepared by modifying activated carbon obtained from apricot stones with 2-hydroxy-2-mercaptopyrimidine (2-thiouracil). The products have been characterized as to their surface area, pore volumes, content of the functional groups with basic and acidic properties, IR spectra, sulfur content. Their sorption properties with respect to some precious (Au(III), Ag(I), Pt(II)) and heavy (Cu(II), Mn(II), Ni(II), Hg(II)) metals are investigated. The sorption is studied as a function of pH (in the interval 1÷8) and stirring time (1÷24 h). The static sorption capacities towards the metal ions are determined under optimum conditions at room temperature. The new sorbent containing thiouracil is appropriate for simultaneous preconcentration of the precious and heavy metal ions within a wide pH range. It shows a significantly higher capacity for the investigated metal ions than the original carbon.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7251ac4fef164b6abdef8ed1bd516a74 https://doi.org/10.1007/s10934-007-9138-y Zobrazit plný text záznamu Full text from SpringerLink