Reactive transport modeling of ⁹⁰Sr sorption in reactive sandpacks
Copyright © 2014 Elsevier B.V. All rights reserved..
Strontium-90 ((90)Sr) is one of the most problematic radioactive contaminants in groundwater at nuclear sites. Although (90)Sr is retarded relative to groundwater flow, it is sufficiently mobile and long-lived to require treatment in many hydrogeological settings. A detailed study was performed on the practicality of using granular clinoptilolite as a sandpack around groundwater wells where groundwater is contaminated with (90)Sr and the water table must be lowered. The effectiveness of the reactive sandpack concept and the mechanisms controlling (90)Sr attenuation was investigated by numerical analysis of data obtained from four in situ column experiments. The experiments spanned the range of pore-water velocities that would occur during radial flow through granular clinoptilolite sandpacks. A kinetic sorption model was required to adequately reproduce the experimentally observed (90)Sr behavior. Calibrated first-order kinetic rates were correlated with pore-water velocities. After calibration, three sorption models were used to simulate (90)Sr attenuation for four hypothetical pumping scenarios. Results show that a velocity-dependent kinetic model accurately simulates the observed early breakthrough for high pore-water velocities. The results indicate (1) that reactive sandpacks have good potential for in situ remediation and construction dewatering and (2) that quantitative modeling can aid in the design and application of this novel technique.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2014 |
|---|---|
| Erschienen: |
2014 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:280 |
|---|---|
| Enthalten in: |
Journal of hazardous materials - 280(2014) vom: 15. Sept., Seite 685-95 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Yin, Jun [VerfasserIn] |
|---|
| Links: |
|---|
| Anmerkungen: |
Date Completed 03.07.2015 Date Revised 10.12.2019 published: Print-Electronic Citation Status MEDLINE |
|---|
| doi: |
10.1016/j.jhazmat.2014.07.073 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM242010857 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM242010857 | ||
| 003 | DE-627 | ||
| 005 | 20231224125456.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231224s2014 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1016/j.jhazmat.2014.07.073 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n0806.xml |
| 035 | |a (DE-627)NLM242010857 | ||
| 035 | |a (NLM)25232651 | ||
| 035 | |a (PII)S0304-3894(14)00650-5 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Yin, Jun |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Reactive transport modeling of ⁹⁰Sr sorption in reactive sandpacks |
| 264 | 1 | |c 2014 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 03.07.2015 | ||
| 500 | |a Date Revised 10.12.2019 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2014 Elsevier B.V. All rights reserved. | ||
| 520 | |a Strontium-90 ((90)Sr) is one of the most problematic radioactive contaminants in groundwater at nuclear sites. Although (90)Sr is retarded relative to groundwater flow, it is sufficiently mobile and long-lived to require treatment in many hydrogeological settings. A detailed study was performed on the practicality of using granular clinoptilolite as a sandpack around groundwater wells where groundwater is contaminated with (90)Sr and the water table must be lowered. The effectiveness of the reactive sandpack concept and the mechanisms controlling (90)Sr attenuation was investigated by numerical analysis of data obtained from four in situ column experiments. The experiments spanned the range of pore-water velocities that would occur during radial flow through granular clinoptilolite sandpacks. A kinetic sorption model was required to adequately reproduce the experimentally observed (90)Sr behavior. Calibrated first-order kinetic rates were correlated with pore-water velocities. After calibration, three sorption models were used to simulate (90)Sr attenuation for four hypothetical pumping scenarios. Results show that a velocity-dependent kinetic model accurately simulates the observed early breakthrough for high pore-water velocities. The results indicate (1) that reactive sandpacks have good potential for in situ remediation and construction dewatering and (2) that quantitative modeling can aid in the design and application of this novel technique | ||
| 650 | 4 | |a Evaluation Study | |
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Dewatering well | |
| 650 | 4 | |a Kinetic sorption | |
| 650 | 4 | |a Reactive transport modeling | |
| 650 | 4 | |a Strontium-90 ((90)Sr) | |
| 650 | 7 | |a Strontium Radioisotopes |2 NLM | |
| 650 | 7 | |a Water Pollutants, Radioactive |2 NLM | |
| 650 | 7 | |a Strontium |2 NLM | |
| 650 | 7 | |a YZS2RPE8LE |2 NLM | |
| 700 | 1 | |a Jeen, Sung-Wook |e verfasserin |4 aut | |
| 700 | 1 | |a Lee, David R |e verfasserin |4 aut | |
| 700 | 1 | |a Mayer, K Ulrich |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Journal of hazardous materials |d 1998 |g 280(2014) vom: 15. Sept., Seite 685-95 |w (DE-627)NLM093662688 |x 1873-3336 |7 nnns |
| 773 | 1 | 8 | |g volume:280 |g year:2014 |g day:15 |g month:09 |g pages:685-95 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1016/j.jhazmat.2014.07.073 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 280 |j 2014 |b 15 |c 09 |h 685-95 | ||