Effective biosorption of U(VI) from aqueous solution using calcium alginate hydrogel beads grafted with amino-carbamate moieties

Autor:	Hamza Shehzad, Yun Wang, Zhirong Liu, Guolin Huang, Jinbo Ouyang, Limin Zhou, Zhao Li
Rok vydání:	2019
Předmět:	Langmuir Aqueous solution Calcium alginate Chemistry Health Toxicology and Mutagenesis Sodium Public Health Environmental and Occupational Health Biosorption chemistry.chemical_element Sorption 010403 inorganic & nuclear chemistry 01 natural sciences Pollution 0104 chemical sciences Analytical Chemistry Colloid chemistry.chemical_compound Nuclear Energy and Engineering Self-healing hydrogels Radiology Nuclear Medicine and imaging Spectroscopy Nuclear chemistry
Zdroj:	Journal of Radioanalytical and Nuclear Chemistry. 321:605-615
ISSN:	1588-2780 0236-5731
Popis:	Novel amino-carbamate moiety grafted calcium alginate hydrogel beads (CA-1) were synthesized by reacting sodium alginate with 4-phenylsemicarbazide followed by ionotropic crosslinking with Ca(II) ions. As compared to pure calcium alginate hydrogel beads (CA), CA-1 exhibited fast kinetics and enhanced sorption capacity towards U(VI) ions, from mild acidic conditions. The sorption kinetic could be described by pseudo-second order equation, with the chemisorption as the rate-controlling step. The sorption isotherm were fitted well by Langmuir (qm = 233.2 mg/g at 298 K). CA-1 hydrogel beads exhibited fast kinetic, high sorption capacity and excellent selectivity for U(VI) sorption, thus it could be potentially used for the removal/recovery of U(VI) ions from wastewater.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::35e658bbc3d08f5d8cf3410d9db57c44 https://doi.org/10.1007/s10967-019-06631-5 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.