Lead and cadmium uptake by sulfur-containing modified silica gels

Autor:	M. J. Menu, C. Verwilghen, E. Deydier, R. Guilet, Y. Dartiguenave
Rok vydání:	2004
Předmět:	Cadmium Aqueous solution Chemistry Silica gel Ethanethiol Inorganic chemistry chemistry.chemical_element Langmuir adsorption model Sulfur containing chemistry.chemical_compound symbols.namesake Adsorption symbols Environmental Chemistry
Zdroj:	Environmental Chemistry Letters. 2:15-19
ISSN:	1610-3661 1610-3653
DOI:	10.1007/s10311-003-0050-7
Popis:	We compared mercaptopropyl fonctionalized silica, ≡SiSH, with two aminoethanethiol modified silica gels, ≡SiNS and ≡SiNMeS, for their ability to remove Cd2+ and Pb2+ from aqueous solutions. Adsorption was performed using a batchwise process. The maximum adsorption capacities were obtained for lead and cadmium. The adsorption isotherms followed the Langmuir model. The calculated parameters indicated a similar removal capacity of ≡Si[2-[3-(triethoxysilyl)propylamino]ethanethiol] and ≡Si-[1-methyl-2-[3-(triethoxysilyl) propylamino]ethanethiol]. This study underscores the different behaviour of the aminoethanethiol modified silica gels compared to the mercaptopropyl modified silica for lead and cadmium uptake.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f8139d3b5cb741f2aee2cc0e39e90a8b https://doi.org/10.1007/s10311-003-0050-7 Zobrazit plný text záznamu Full text from SpringerLink