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| 001 | 877445 | ||
| 005 | 20240708133914.0 | ||
| 024 | 7 | _ | |a 10.1016/j.apgeochem.2020.104630 |2 doi |
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| 100 | 1 | _ | |a Lange, Steve |0 P:(DE-Juel1)137066 |b 0 |
| 245 | _ | _ | |a Uptake and retention of molybdenum in cementitious systems |
| 260 | _ | _ | |a Amsterdam [u.a.] |c 2020 |b Elsevier Science |
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| 520 | _ | _ | |a The uptake of molybdenum, present in aqueous cementitious environments in the form of the molybdate ion (MoO42-), by various cement hydration phases such as calcium-silicate-hydrates (C–S–H), monosulphate (AFm), ettringite (AFt), as well as hardened cement paste made from Ordinary Portland cement (OPC), was studied in batch-type sorption experiments under anoxic conditions. Uptake kinetics were generally fast, leading to sorption equilibrium in less than 30 days. In particular, a strong uptake of molybdate by AFm phases was observed as well as a distinct contribution of C–S–H phases to the molybdate retention in cementitious systems, the latter depending on the Ca/Si-ratio of the C–S–H and the alkali content in solution. In systems containing hydrogarnet, the neo-formation of a molybdate-bearing AFm phase was identified as an additional process contributing to molybdate retention. The findings have implications for selecting grouts for the immobilisation of radioactive waste streams containing Mo-93 and also enhance the data available on molybdate sorption and retention in cementitious systems. |
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| 700 | 1 | _ | |a Bosbach, Dirk |0 P:(DE-Juel1)130324 |b 3 |
| 700 | 1 | _ | |a Deissmann, Guido |0 P:(DE-Juel1)156511 |b 4 |e Corresponding author |
| 773 | _ | _ | |a 10.1016/j.apgeochem.2020.104630 |g p. 104630 - |0 PERI:(DE-600)1499242-5 |p 104630 |t Applied geochemistry |v 119 |y 2020 |x 0883-2927 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/877445/files/Lange%20ApplGeochem%202020.pdf |y Published on 2020-05-20. Available in OpenAccess from 2022-05-20. |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/877445/files/Lange%20ApplGeochem%202020.pdf?subformat=pdfa |x pdfa |y Published on 2020-05-20. Available in OpenAccess from 2022-05-20. |
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