|   | 
Details
   web
Records
Author Zhao, Y.; Li, X.; Lei, L.; Chen, L.; Luo, Z.
Title Permeability evolution mechanism and the optimum permeability determination of uranium leaching from low-permeability sandstone treated with low-frequency vibration Type Journal Article
Year 2023 Publication Journal of Rock Mechanics and Geotechnical Engineering Abbreviated Journal
Volume 15 Issue 10 Pages (down) 2597-2610
Keywords Chemical reactive rate, Low-frequency vibration, Low-permeability sandstone, Optimum permeability, Permeability evolution mechanism, Uranium migration
Abstract Low-frequency vibrations can effectively improve natural sandstone permeability, and higher vibration frequency is associated with larger permeability. However, the optimum permeability and permeability evolution mechanism for uranium leaching and the relationship between permeability and the change of chemical reactive rate affecting uranium leaching have not been determined. To solve the above problems, in this study, identical homogeneous sandstone samples were selected to simulate low-permeability sandstone; a permeability evolution model considering the combined action of vibration stress, pore water pressure, water flow impact force, and chemical erosion was established; and vibration leaching experiments were performed to test the model accuracy. Both the permeability and chemical reactions were found to simultaneously restrict U6+ leaching, and the vibration treatment increased the permeability, causing the U6+ leaching reaction to no longer be diffusion-constrained but to be primarily controlled by the reaction rate. Changes of the model calculation parameters were further analyzed to determine the permeability evolution mechanism under the influence of vibration and chemical erosion, to prove the correctness of the mechanism according to the experimental results, and to develop a new method for determining the optimum permeability in uranium leaching. The uranium leaching was found to primarily follow a process consisting of (1) a permeability control stage, (2) achieving the optimum permeability, (3) a chemical reactive rate control stage, and (4) a channel flow stage. The resolution of these problems is of great significance for facilitating the application and promotion of low-frequency vibration in the CO2 + O2 leaching process.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1674-7755 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number THL @ christoph.kuells @ zhao_permeability_2023 Serial 198
Permanent link to this record
 

 
Author Zagana, E.; Külls, C.; Udluft, P.; Constantinou, C.
Title Methods of groundwater recharge estimation in eastern Mediterranean water balance model application in Greece, Cyprus and Jordan Type Journal Article
Year 2007 Publication Hydrological Processes: An International Journal Abbreviated Journal
Volume 21 Issue 18 Pages (down) 2405-2414
Keywords
Abstract
Address
Corporate Author Thesis
Publisher John Wiley & Sons, Ltd. Chichester, UK Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number THL @ christoph.kuells @ Zagana2007methods Serial 30
Permanent link to this record
 

 
Author Tziritis, E.; Aschonitis, V.; Balacco, G.; Daras, P.; Doulgeris, C.; Fidelibus, M.D.; Gaubi, E.; Gueddari, M.; Güler, C.; Hamzaoui, F.; others
Title MEDSAL Project-Salinization of critical groundwater reserves in coastal Mediterranean areas: Identification, risk assessment and sustainable management with the use of integrated modelling and smart ICT tools Type Conference Article
Year 2020 Publication EGU General Assembly Conference Abstracts Abbreviated Journal
Volume Issue Pages (down) 2326
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number THL @ christoph.kuells @ Tziritis2020medsal Serial 43
Permanent link to this record
 

 
Author Zagana, E.; Obeidat, M.; Külls, C.; Udluft, P.
Title Chloride, hydrochemical and isotope methods of groundwater recharge estimation in eastern Mediterranean areas: a case study in Jordan Type Journal Article
Year 2007 Publication Hydrological Processes: An International Journal Abbreviated Journal
Volume 21 Issue 16 Pages (down) 2112-2123
Keywords
Abstract
Address
Corporate Author Thesis
Publisher John Wiley & Sons, Ltd. Chichester, UK Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number THL @ christoph.kuells @ Zagana2007chloride Serial 29
Permanent link to this record
 

 
Author Baram, S.; Ronen, Z.; Kurtzman, D.; Külls, C.; Dahan, O.
Title Desiccation-crack-induced salinization in deep clay sediment Type Journal Article
Year 2013 Publication Hydrology and Earth System Sciences Abbreviated Journal
Volume 17 Issue 4 Pages (down) 1533
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Copernicus GmbH Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number THL @ christoph.kuells @ Baram2013desiccation Serial 21
Permanent link to this record