Results 11 to 20 of about 737,947 (298)

Hydrometallurgical process development to recycle valuable metals from spent SCR deNOX catalyst

open access: yesScientific Reports, 2021
Spent catalyst, containing vanadium and tungsten oxide in a TiO2 glass fiber matrix, pose a risk of environmental contamination due to the high toxicity of its metal oxides if leached into the soil when disposed in landfills. Due to the increasing demand
Jong Hyuk Jeon   +3 more
doaj   +1 more source

Analysis and Prediction of Landscape Ecological Risk in Yellow River Basin

open access: yesShuitu baochi tongbao, 2022
[Objective] The land use changes in the Yellow River basin during the past two decades were analyzed in order to predict land use in 2030, analyze the landscape pattern index, reveal ecological risk status, and assist with landscape protection ...
Du Wentao   +4 more
doaj   +1 more source

Bismuth fire assay preconcentration and empirical coefficient LA-ICP-MS for the determination of ultra-trace Pt and Pd in geochemical samples

open access: yesScientific Reports, 2022
In this work, a novel method of solid sample pretreatment technique of bismuth fire assay (Bi-FA) combined with solid sample determination by laser ablation ICP-MS (LA-ICP-MS) was reported for the determination of ultra-trace Pt and Pd in geochemical ...
Wenshan Ni   +6 more
doaj   +1 more source

MINERAL RESOURCES

open access: yes, 2022
Natural resources found in nature in the form of minerals are called mineral resources (resources). Currently, more than 200 types of mineral resources are used for economic needs. In practice, mineral resources contain almost all the elements in D. I.
Revaz Khazaradze, Elene Salukvadze
openaire   +3 more sources

Preparation of Silicon-Carbon-Graphene Composites and their Application to Lithium Ion Secondary Battery

open access: yesAerosol and Air Quality Research, 2022
Recently, high electrochemical performance anode materials for lithium ion secondary batteries are of interest. Here, we present silicon-carbon-graphene (Si-C-GR) composites for high performance anode materials of lithium ion secondary battery (LIB ...
Sun Kyung Kim   +3 more
doaj   +1 more source

Integration by design: driving mineral system knowledge using multi-modal, collocated, scale-consistent characterisation [PDF]

open access: yesEarth System Science Data
Recent decades have seen an exponential rise in the application of machine learning in geoscience. However, fundamental differences distinguish geoscience data from most other data types.
J. R. Austin   +13 more
doaj   +1 more source

Environmentally friendly comprehensive hydrometallurgical method development for neodymium recovery from mixed rare earth aqueous solutions using organo-phosphorus derivatives

open access: yesScientific Reports, 2020
Rare earth elements (REEs) have obtained a greatest significant in human lives owing to their important roles in various high technology applications.
Verónica Cristina Arellano Ruiz   +4 more
doaj   +1 more source

Mapping Alteration Mineralogy in Eastern Tsogttsetsii, Mongolia, Based on the WorldView-3 and Field Shortwave-Infrared Spectroscopy Analyses

open access: yesRemote Sensing, 2021
This study produces alteration mineral maps based on WorldView-3 (WV-3) data and field shortwave-infrared (SWIR) spectroscopy. It is supported by conventional analytical methods such as X-ray diffraction, X-ray fluorescence, and electron probe X-ray ...
Young-Sun Son   +6 more
doaj   +1 more source

Novel eco-friendly low cost and energy efficient synthesis of (Nd–Pr–Dy)2Fe14B magnetic powder from monazite concentrate

open access: yesScientific Reports, 2021
Syntheses of Nd2Fe14B magnetic powder by conventional method is a complicated multi-step process, which produces harmful pollutants and consumes a huge amount of energy and resources. Herein we report a simple chemical route for the preparation of (Nd–Pr)
Syed Kamran Haider   +4 more
doaj   +1 more source

Application of ASTER Data for Differentiating Carbonate Minerals and Evaluating MgO Content of Magnesite in the Jiao-Liao-Ji Belt, North China Craton

open access: yesRemote Sensing, 2022
Numerous reports have successfully detected or differentiated carbonate minerals such as calcite and dolomite by using the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER).
Young-Sun Son   +6 more
doaj   +1 more source

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