Sorption of Np(V) by synthetic hydroxyapatite
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| 024 | 7 | 0 | |a 10.1524/ract.91.12.721.23417 |2 doi |
| 035 | |a (NATIONALLICENCE)gruyter-10.1524/ract.91.12.721.23417 | ||
| 245 | 0 | 0 | |a Sorption of Np(V) by synthetic hydroxyapatite |h [Elektronische Daten] |c [Robert C. Moore, Kathleen Holt, Hongting Zhao, Ahmed Hasan, Nasser Awwad, Mona Gasser, Charles Sanchez] |
| 520 | 3 | |a The sorption of Np(V) to synthetic hydroxyapatite was determined in batch experiments in a 0.1M NaClO4 solution. The hydroxyapatite used was of high purity as determined by SEM, EDS, XRD, FT-IR and ICP-MS analysis. Results from kinetic experiments with an initial Np(V) concentration of 1×10-7 to 1×10-6M indicate the sorption process is relatively fast with more than 90 of the Np(V) being sorbed in approximately 3 hours. Equilibrium experiments performed over the pH range of 6 to 11 indicated sorption is strongly pH dependent with distribution coefficients, Kd values (mL/g), increasing from 123L/mole at pH 6 to 69200L/mole at pH 8.5. Kd values are observed to decrease as pH further increases. Data points over a range of Np(V) concentrations were collected at pH 8 and fitted to the Langmuir isotherm model for simple adsorption. The Langmuir equation gave an excellent representation of the data. Langmuir parameters were determined to be Ca=0.032mole/mole and K=1.22×106L/mole, indicating the high affinity of hydroxyapatite for Np(V) adsorption. | |
| 540 | |a © 2003 Oldenbourg Wissenschaftsverlag GmbH | ||
| 690 | 7 | |a Laboratory techniques, experiments |2 nationallicence | |
| 690 | 7 | |a Analytical chemistry |2 nationallicence | |
| 690 | 7 | |a Inorganic chemistry |2 nationallicence | |
| 700 | 1 | |a Moore |D Robert C. |4 aut | |
| 700 | 1 | |a Holt |D Kathleen |4 aut | |
| 700 | 1 | |a Zhao |D Hongting |4 aut | |
| 700 | 1 | |a Hasan |D Ahmed |4 aut | |
| 700 | 1 | |a Awwad |D Nasser |4 aut | |
| 700 | 1 | |a Gasser |D Mona |4 aut | |
| 700 | 1 | |a Sanchez |D Charles |4 aut | |
| 773 | 0 | |t Radiochimica Acta/International journal for chemical aspects of nuclear science and technology |d Oldenbourg Wissenschaftsverlag GmbH |g 91/12/2003(2003-12-01), 721-728 |x 0033-8230 |q 91:12/2003<721 |1 2003 |2 91 |o ract | |
| 856 | 4 | 0 | |u https://doi.org/10.1524/ract.91.12.721.23417 |q text/html |z Onlinezugriff via DOI |
| 908 | |D 1 |a research article |2 jats | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1524/ract.91.12.721.23417 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Moore |D Robert C. |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Holt |D Kathleen |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Zhao |D Hongting |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Hasan |D Ahmed |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Awwad |D Nasser |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Gasser |D Mona |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Sanchez |D Charles |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Radiochimica Acta/International journal for chemical aspects of nuclear science and technology |d Oldenbourg Wissenschaftsverlag GmbH |g 91/12/2003(2003-12-01), 721-728 |x 0033-8230 |q 91:12/2003<721 |1 2003 |2 91 |o ract | ||
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| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-gruyter | ||