Results 51 to 60 of about 17,959 (285)

Geobiology of in situ uranium leaching

, 2013
Driven by the world’s thirst for energy, the demand for uranium is rapidly increasing. Hence, producers of uranium are struggling to keep up with demands and are exploring more cost-effective methods of extraction. Uranium is currently mined via open pit
Reith, F., Li, K., Etschmann, B., Zammit, C., Brugger, J.   +4 more
core   +1 more source

Graded‐Interface Dual‐Environment Hydrogel‐Polymer Electrolyte for Stabilized Anode and Sustained Cathode Kinetics in Aqueous Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
A graded‐interface hydrogel‐polymer electrolyte decouples water activity to simultaneously stabilize the Zn anode and sustain cathode kinetics. The flexible design supports dendrite‐free cycling over 1600 h, high capacity in both MnO2 and V2O5 full cells, and stable pouch‐cell performance under bending, resolving the fundamental water conflict in ...
Shuyun Wang, Shengmei Chen, Xinyu Wang, Haipeng Wang, Jinsong Zhou, Ka Kiu Keith Cheung, Yiran Ying, Longtao Ma, Juan Antonio Zapien   +8 more
wiley   +1 more source

Nanoengineered Binetworks in Multifunctional Anionic Block Polymer Mesoblends for Improved Mechanical Properties

Advanced Functional Materials, EarlyView.
Mesoblends consist of a nanostructured polymer into which a second polymer is imbibed with a selective solvent. In this work, a solvent‐templatable pentablock terpolymer possessing a sulfonated midblock is modified with a hydrophilic polymer that is photocrosslinked in situ, yielding a hierarchical binetwork.
Kacie M. Wells, Ivan Kuzmenko, Reza A. Ghiladi, Richard J. Spontak   +3 more
wiley   +1 more source

Study on Calculation Method for Ore-controlling Volume of Flow Field for In-situ Leaching of Uranium

Yuanzineng kexue jishu
The effective hydrodynamic field and ore-controlling volume of the flow field for in-situ leaching of uranium are key parameters proposed in recent years to characterize the seepage and leaching features of underground water systems in-situ leaching of ...
LI Qinci1, 2, QUE Weimin1, 2, XIE Tingting1, 2, LI Zhaokun1, 2, WANG Sichen1, 2, ZOU Yuhan1, ZHAO Longhao1, 2, DU Zhiming1, 2, YANG Yihan3, ZHANG Chong1, 2
doaj   +1 more source

In situ leaching processes: Mathematical modeling for one-dimensional case

, 1997
In situ leaching is increasingly becoming an attractive mining method for extraction of mineral values from low-grade ore deposits. However, this method may not be adopted in practice until the various physical and chemical processes operating during ...
Brady, B. H., Liu, J.
core   +1 more source

Designed Lewis Acid–Base Passivation for High Performance Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
ABSTRACT Silicon's high cost and long energy payback time remain major barriers to the global expansion of solar power. In contrast, metal–halide perovskites offer abundant, solution‐processable absorbers, and have achieved efficiencies of 25%–30%, positioning them as strong competitors to silicon.
Afna Manaf, Hiba Shahulhameed, Bhabani Sankar Swain, Shengzhong (Frank) Liu, Adel Najar   +4 more
wiley   +1 more source

Riverine Ecosystem Contamination and Ecological Risk Assessment Following Cyanide Leakage from In Situ Rare Earth Mining in Northern Laos

Earth
In situ leaching is increasingly used for rare earth element (REE) extraction because of its operational efficiency; however, acidic and chemically reactive leaching solutions may generate substantial environmental risks in riverine systems.
Somchith Phetmany, Bounmy Keohavong, Bounlue Douangdy, Xaythavone Bounyasone, Xuewei Hu   +4 more
doaj   +1 more source

Research on the saturated/unsaturated seepage laws of ionic rare earth ore under different leaching conditions

Frontiers in Earth Science, 2023
The seepage law of the ionic rare earth leaching process plays an important role in the efficient development and utilization. The saturation permeation test of ionic rare earth under different leaching conditions was carried out using the variable head ...
Zhongqun Guo, Zhongqun Guo, Lingfeng Liu, Kefan Zhou, Xiaojun Wang, Wen Zhong   +5 more
doaj   +1 more source

Simulating In-Situ Leaching Process Using COMSOL Multiphysics

, 2014
The paper deals with simulation of in-situ uranium leaching technological process, collecting data for forecasting and leaching process control. It provides numerical simulation of uranium in-situ leaching (ISL) using Comsol Multiphysics software package
Usenov, A. K., Mukhanov, B. K., Wójcik, W., Omirbekova, Z. Z., Mukhanov, Bakhyt K., Usenov, Azamat K., Omirbekova, Zhanar Zh., Wójcik, Waldemar   +7 more
core   +1 more source

Tree and ecosystem responses to four years of in situ CO2 enrichment at the Swiss treeline [PDF]

, 2008
Following four years of CO2 enrichment (2001-2004) of trees and their understory dwarf heath, and a one-time tree defoliation treatment in the spring of the second year at the Swiss treeline FACE site on Stillberg (Davos, Switzerland), this ...
Handa, Ira Tanya
core   +1 more source