Sorption of uranyl(VI) cations on suspended silicate: effects of N-donor ligands, carboxylic acids, organic cosolvents, and metal ions
-
P. N. Pathak
Sorption of uranyl ion, UO22+, on silicate particles (3.00g/L) was studied in sodium perchlorate solution as a function of pcH and ionic strength at 298 K. The effects of different ligands (e.g., N-donors, carboxylic acids) on the uranyl sorption were investigated. At I = 0.20 M (NaClO4), uranyl sorption on silicate increased from ca. 6% (pcH 3.0) to ca. 99% (at pcH 6.5), above which a small decrease was observed. A synergistic enhancement in uranyl sorption was observed in the presence of N-donor ligands such as 1,10-phenanthroline and ethylenediamine in the pcH range 3 to 4.5 as compared to that in the absence of ligands. Carboxylic acids inhibited the sorption in the order: citric acid > malonic acid > nitrilotriacetic acid > iminodiacetic acid > sulfosalicylic acid > succinic acid > glycolic acid. The presence of organic cosolvents such as dimethylsulfoxide, glycerol and tetrahydrofuran had no significant influence on the uranyl sorption profile. Uranyl sorption decreased marginally in the presence of 1.00 × 10−3 M Eu(III).
© Oldenbourg Wissenschaftsverlag
Artikel in diesem Heft
- Sorption of uranyl(VI) cations on suspended silicate: effects of N-donor ligands, carboxylic acids, organic cosolvents, and metal ions
- Surface complexation modeling of the effects of phosphate on uranium(VI) adsorption
- Application of oxidized multi-wall carbon nanotubes for Th(IV) adsorption
- Effect of complexing anions on europium sorption on suspended silica: a TRLFS study for ternary complex formation
- Raman studies of technetium in borosilicate waste glass
- Mordanting of mercury on styrene-divinylbenzene copolymer beads from aqueous solutions
- Enhanced extraction and separation of zirconium(IV) and hafnium(IV) with 3-phenyl-4-benzoyl-5-isoxazolone in presence of various neutral organophosphorus extractants
- Separation of 137mBa from 137Cs using new ion exchanger Na2(H2O)4(H3O)[Al(OH)6Mo6O18]
Artikel in diesem Heft
- Sorption of uranyl(VI) cations on suspended silicate: effects of N-donor ligands, carboxylic acids, organic cosolvents, and metal ions
- Surface complexation modeling of the effects of phosphate on uranium(VI) adsorption
- Application of oxidized multi-wall carbon nanotubes for Th(IV) adsorption
- Effect of complexing anions on europium sorption on suspended silica: a TRLFS study for ternary complex formation
- Raman studies of technetium in borosilicate waste glass
- Mordanting of mercury on styrene-divinylbenzene copolymer beads from aqueous solutions
- Enhanced extraction and separation of zirconium(IV) and hafnium(IV) with 3-phenyl-4-benzoyl-5-isoxazolone in presence of various neutral organophosphorus extractants
- Separation of 137mBa from 137Cs using new ion exchanger Na2(H2O)4(H3O)[Al(OH)6Mo6O18]
