Results 51 to 60 of about 46,745 (267)

Study on hydrometallurgical process and kinetics of manganese extraction from low-grade manganese carbonate ores

open access: yesInternational Journal of Mining Science and Technology, 2014
In order to utilize low-grade manganese ore resources effectively, a hydrometallurgical process was developed for manganese extraction in dilute sulfuric acid medium, and the kinetics of leaching manganese was also investigated.
Youcai Liu   +6 more
doaj   +1 more source

One‐Step Curcumin‐Mediated Multiphoton Lithography for Bioactive 3D Scaffolds

open access: yesAdvanced Functional Materials, EarlyView.
Curcumin‐mediated multiphoton lithography enables one‐step fabrication of highly architected complex gelatin methacryloyl scaffolds by exploiting curcumin as a multifunctional bioactive photoinitiator. The resulting 3D structures support mesenchymal stem cell adhesion, proliferation, and migration, while exhibiting dual antibacterial activity through ...
Myrto Charitaki   +7 more
wiley   +1 more source

A Cleaner Phosphoric Acid Production Path: Simultaneous P Extraction and REE Enrichment via Controlled HCl Leaching

open access: yesSeparations
Rare earth elements (REEs), as significant associated resources in sedimentary phosphate deposits, are commonly processed via the conventional hydrochloric acid wet-process phosphoric acid route (IMI process).
Jiawei Lin   +4 more
doaj   +1 more source

Study on thermodynamic model of arsenic removal from oxidative acid leaching

open access: yesJournal of Materials Research and Technology, 2020
In this paper, we propose a new strategy to remove arsenic from arsenic-containing waste residues by oxidation-acid leaching. The experimental results show the example is effective for different types of arsenic-containing waste residues.
Yang Wang   +5 more
doaj   +1 more source

Leaching Kinetics of Magnesite in Citric Acid Solutions

open access: yesJOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2003
The solubility of magnesite ore in citric acid, an environmentally friend and natural reagent, was investigated. The effects of reaction temperature, particle size and acid concentration were examined. The leaching rate increased with decreasing particle size and with increasing temperature.
Demir, Fatih   +2 more
openaire   +2 more sources

Snap‐Through–Driven Liquid Crystal Elastomers for High‐Power Remote Microneedle Actuation Toward Smart Livestock Systems

open access: yesAdvanced Functional Materials, EarlyView.
A magnetically assisted snap‐through liquid crystal elastomer transforms photochemical deformation into a high‐power mechanical impulse, enabling remote microneedle actuation and highlighting its potential for future smart livestock intervention systems.
Chae Won Lee   +3 more
wiley   +1 more source

Calcification Roasting-Microwave Acid Leaching of Vanadium from Vanadium-Bearing Steel Slag

open access: yesCrystals
Enhanced vanadium recovery from vanadium-bearing steel slag is essential in the sustainable use of metallurgical solid waste. This study uses microwave-assisted acid leaching on roasted clinker and systematically investigates it to enhance vanadium ...
Le Wang   +3 more
doaj   +1 more source

Column Leaching Tests to Valorize a Solid Waste from the Decommissioning of Coal-Fired Power Plants

open access: yesEnergies, 2019
Solid waste from the decommissioning of coal-fired power plants collected from a power plant in Spain (Puertollano, Ciudad Real) was subjected to acid leaching tests in columns to evaluate the leachability of several valuable and toxic metals (Al, Ca, Fe,
Ernesto Rivas   +4 more
doaj   +1 more source

Leaching of Pewterware by Organic Acids

open access: yesJournal of AOAC INTERNATIONAL, 1977
Abstract Three pewter goblets were repeatedly leached by acetic, citric, lactic, malonic, and tartaric acid solutions. The leach solutions were periodically analyzed for Pb, Cd, Cu, Bi, Sb, and Sn by atomic absorption spectrophotometry. Analysis of the leach solutions showed that, without the addition of nitric or perchloric acid to the ...
openaire   +1 more source

Dynamically Actuated Reconfigurable Topographical Surface Enables Active Control of Implant‐Associated Infections

open access: yesAdvanced Functional Materials, EarlyView.
A dynamically actuated reconfigurable topographical surface (DARTS) integrates contact‐mediated bactericidal nanotopography with programmable mechanical actuation to actively disrupt bacterial biofilms. Dynamic surface reconfiguration enhances bacterial killing and suppresses implant‐associated infections in vivo, providing a new strategy for active ...
Mohammad Asadi Tokmedash   +4 more
wiley   +1 more source

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