Adsorption of No-Carrier-Added <sup>119</sup>Sb(V) Ions onto Metal Oxide and Hydroxide Surfaces from Aqueous Solutions

Ambe, S.

doi:10.1524/ract.1989.46.3.145

Cited by 4 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Desorption of Sb(V) is observed at pH values above 8. This is in agreement with literature studies of the pH dependence of Sb(V) sorption to α‐Fe 2 O 3 and to γ‐Fe 2 O 3 (Ambe, 1987, 1989). The dotted line shows an estimate of the percentage of Sb(V) in solution using surface complexation constants derived by Dzombak and Morel (1990) from linear‐free energy relationships with deprotonation constants.…”

Section: Resultssupporting

confidence: 93%

“…Iron (hydr)oxides do appear to be important sorbents for Sb (Ambe, 1987, 1989; Thanabalasingam and Pickering, 1990; Gannon and Wilson, 1986; Enders, 1996) though sorption to Al (hydr)oxides has been reported by Meima and Comans (1998) and Gannon and Wilson, (1986) Generally, Sb(III) binds to solids more strongly and over a wider pH range than Sb(V). Sorption is pH dependent.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Solubility of Antimony and Other Elements in Samples Taken from Shooting Ranges

et al. 2005

View full text Add to dashboard Cite

Recently, our attention has focused on the low level detection of many antibiotics, pharmaceuticals, and other organic chemicals in water resources. The limited studies available suggest that urban or rural streams receiving wastewater effluent are more susceptible to contamination. The purpose of this study was to evaluate the occurrence of antibiotics, pharmaceuticals, and other organic chemicals at 18 sites on seven selected streams in Arkansas, USA, during March, April, and August 2004. Water samples were collected upstream and downstream from the influence of effluent discharges in northwestern Arkansas and at one site on a relatively undeveloped stream in north-central Arkansas. At least one antibiotic, pharmaceutical, or other organic chemical was detected at all sites, except at Spavinaw Creek near Mayesville, Arkansas. The greatest number of detections was observed at Mud Creek downstream from an effluent discharge, including 31 pharmaceuticals and other organic chemicals. The detection of these chemicals occurred in higher frequency at sites downstream from effluent discharges compared to those sites upstream from effluent discharges; total chemical concentration was also greater downstream. Wastewater effluent discharge increased the concentrations of detergent metabolites, fire retardants, fragrances and flavors, and steroids in these streams. Antibiotics and associated degradation products were only found at two streams downstream from effluent discharges. Overall, 42 of the 108 chemicals targeted in this study were found in water samples from at least one site, and the most frequently detected organic chemicals included caffeine, phenol, para-cresol, and acetyl hexamethyl tetrahydro naphthalene (AHTN).

show abstract

Section: Resultssupporting

confidence: 93%

mentioning

confidence: 99%

Solubility of Antimony and Other Elements in Samples Taken from Shooting Ranges

et al. 2005

View full text Add to dashboard Cite

show abstract

“…Several kinds of inorganic materials have been developed in recent years, and insoluble metallic oxides have found particular interest in the removal of radioisotopes in aqueous solutions [3][4][5][6][7]. They have proved to be effective materials for the treatment of waste radioactive liquids, have affinity for certain ions or groups of ions, and show high selectivity, resistance to degradation at high temperatures and at high levels of radiation.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of ⁶⁰Co²⁺ on hydrous manganese oxide powder from aqueous solution

Granados-Correa¹,

Jiménez-Becerril²

2004

Radiochimica Acta

View full text Add to dashboard Cite

Adsorption / Hydrous manganese oxide / 60 Co 2+ / Freundlich adsorption / Radioactive waste / Desorption Summary. Hydrous manganese oxide (HMO) was synthesized and its ability to sorb 60 Co 2+ from aqueous solution was studied under static conditions as a function of contact time, cobalt concentration (10 −2 -10 −7 M), temperature (303-333 K) and pH of adsorptive solution (2.2-11.4). X-ray diffraction was used in characterization of synthesized HMO. Low concentration of 60 Co 2+ solution, high pH and high temperature were the most favorable conditions for the adsorption process. The results show that the removal process is complete in 40 minutes, obeys a first order rate law and can be described using the Freundlich adsorption model. The standard enthalpy of the system was ∆H 0 = 12.5 ± 0.2 kJ mol −1 and cobalt desorption indicates that the uptake process proceeds via cation exchange. The removal of cobalt ions by HMO appears to be endothermic and irreversible. The values of calculated ∆G 0 and ∆S 0 were − 17.0 ± 3.0 kJ mol −1 and (9.8 ± 0.2) × 10 −2 kJ K −1 mol −1 respectively, this indicates spontaneity of the process and the degree of freedom of ions is increased by adsorption.

show abstract