Results 61 to 70 of about 1,040,720 (337)
Leaching kinetics of gold mine tailings: the removal of manganese and iron by sodium carbonate [PDF]
E3S Web of Conferences, 2019 South Africa is a mineral-rich country with numerous metals and minerals such as gold, copper, and platinum group metals which are exploited to a significant extent.
Mashifana Tebogo, Sithole Nastassia
doaj +1 more source
, 2021 The sequential separation of base and precious metals from the end-of-life mobile phone printed circuit boards (PCBs) is a significant challenge for the development of recycling process that exhibit material circularity.
Mudila Dhanunjaya Rao +3 more
semanticscholar +1 more source
Harnessing Phase Separation for the Development of High‐Performance Hydrogels
Advanced Science, EarlyView.ABSTRACT Hydrogels are indispensable for the development of next‐generation bioelectronics, soft robotics, and biomedical devices, where their mechanical properties determine performance and reliability. Among strategies to enhance hydrogel mechanics, phase separation enables controlled heterogeneity resulting in gel networks that are reinforced by ...
Yue Shao +3 more
wiley +1 more source
Angewandte Chemie, EarlyView.Ordered L12‐Pt3Mn intermetallic alloys are uniformly deposited onto atomically dispersed Mn–N–C supports. The synergistic effect between MnN4 sites and Pt3Mn elevates interfacial binding strength and dissolution barriers while favorably weakening *OH adsorption. It delivers exceptional catalytic activity and stability in fuel cells, serving as an ideal
Gongjin Chen +8 more
wiley +2 more sources
ElectrochemistryThiosulfate leaching of gold is a promising alternative to cyanidation due to its low toxicity and reduced environmental impact. We proposed displacement deposition (cementation) onto silicon powder for gold recovery from ammonium thiosulfate leaching ...
Ayumu MATSUMOTO +5 more
doaj +1 more source
Advanced Science, EarlyView.Multidimensional laser‐induced graphene (LIG) spanning from 0D to 3D architectures is comprehensively reviewed for multifunctional biomedical platforms, including biosensing, theranostics, and bioactive interface applications, which highlights its potentials for point‐of‐care diagnostics, wearable health monitoring, smart drug delivery, and tissue ...
Li Zhang +3 more
wiley +1 more source
Extraction of gold from agricultural drones' waste components through Thiourea leaching [PDF]
REM: International Engineering JournalThe global commercial drone market is experiencing rapid growth, particularly in precision agriculture applications such as crop spraying. This market is projected to expand at an 8.3% compound annual growth rate (CAGR), contributing to an overall drone ...
Stefany Vier Steffen, Hugo Marcelo Veit
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V2CTx MXene as a Sacrificial Promoter for NiFe Catalyst for Anion Exchange Membrane Electrolyzers
Advanced Science, EarlyView.These findings demonstrate that V2CTx functions beyond passive conductive support as an active electronic participant whose structural legacy sustains durable performance even after vanadium leaching in Anion Exchange Membrane (AEM) Electrolysers. ABSTRACT Nickel‐iron layered double hydroxides (NiFe‐LDH) show excellent activity, their poor conductivity
Bastian Schmiedecke +12 more
wiley +1 more source
Leaching of gold, silver and accompanying metals from circuit boards (PCBs) waste [PDF]
Acta Montanistica Slovaca, 2011 Au-Ag noble metal wastes represent a wide range of waste types and forms, with various accompanying metallic elements.The presented leaching strategy for Au-Ag contained in circuit boards (PCBs) aims at gaining gold and silver in the metallic form ...
Jana Ficeriová +2 more
doaj
LEACHING OF GOLD FROM FINE-GRAINED FLOTATION TAILINGS
GeoScience Engineering, 2020 This study focuses on leaching of gold from fine-grained waste materials from flotation. The input raw material is the waste product after flotation containing about 1–2.5 g/t of Au.
Sarah JANŠTOVÁ +2 more
doaj +1 more source