Results 81 to 90 of about 43,231 (250)

Microbial- and Thiosulfate-Mediated Dissolution of Mercury Sulfide Minerals and Transformation to Gaseous Mercury

open access: yesFrontiers in Microbiology, 2015
Mercury (Hg) is a toxic heavy metal that poses significant human and environmental health risks. Soils and sediments, where Hg can exist as the Hg sulfide mineral metacinnabar (β-HgS), represent major Hg reservoirs in aquatic environments.
Adiari eVázquez-Rodríguez   +6 more
doaj   +1 more source

Nephrogenic Systemic Fibrosis: A Rare Contemporary Case After a Decade of Declining Incidence

open access: yesJEADV Clinical Practice, EarlyView.
ABSTRACT Nephrogenic systemic fibrosis (NSF) is a rare fibrosing disorder associated with exposure to gadolinium‐based contrast agents in patients with renal impairment. Although its incidence has markedly declined since the restriction of high‐risk linear gadolinium agents, sporadic cases may still occur.
Marta Sánchez Díaz   +5 more
wiley   +1 more source

A review of factors affecting gold leaching in non-ammoniacal thiosulfate solutions including degradation and in-situ generation of thiosulfate [PDF]

open access: yes, 2018
Cyanide has been used for more than a century as a preferred lixiviant for extracting gold from ores and concentrates. While cyanide is very effective in treating certain ores and concentrates, it is not suitable for carbonaceous and high copper-bearing ...
Nikoloski, A.N.   +9 more
core   +1 more source

Sustainable Metal Recovery From E‐Waste: Exploring Greener Leachates in Hydrometallurgical Processes

open access: yesMetalMat, EarlyView.
Recycling of electronic waste to synthesize valuable metals using green leachate. ABSTRACT The accumulation of electronic waste (e‐waste) poses environmental hazards and leads to the loss of valuable metals such as gold, silver, copper, and rare earth elements.
Shassatha Paul Saikat   +4 more
wiley   +1 more source

Peroxodisulfate-thiosulfate-Cu(II) mechanism [PDF]

open access: yes
The aim of the project is to create a kinetic model for the peroxodisulfate-thiosulfate-Cu(ii) oscilatory ...
István Szalai
core   +1 more source

Rechargeable N‐Halamine Functionalized Ultra‐Thin PES Ultrafiltration Membranes

open access: yesJournal of Polymer Science, EarlyView.
An automated 3D printer‐assisted casting platform is utilized to fabricate ultra‐thin polyethersulfone membranes with precise structural control. The integration of a custom‐synthesized, regenerable N‐halamine homopolymer imparts superior, cyclic antifouling resistance and rapid, broad‐spectrum antibacterial efficacy.
Ahmet Aydın   +2 more
wiley   +1 more source

Cellulosimicrobium sp. Strain L1: A Study on the Optimization of the Conditions and Performance of a Combined Biological Trickling Filter for Hydrogen Sulfide Degradation

open access: yesMicroorganisms
Sulfide is a toxic and hazardous substance in the agricultural environment, which can cause damage to humans and livestock when exposed to large amounts of air.
Xuechun Wang   +5 more
doaj   +1 more source

Polysulfide Immobilization and Sulfur Conversion Kinetics Promotion via a Tetrathiafulvalene–Crown Ether COF@Graphene Layer for High‐Rate Lithium–Sulfur Batteries

open access: yesSmall, EarlyView.
A polysulfide‐regulating covalent organic framework (TUS‐44) integrating tetrathiafulvalene and crown‐ether linkers forms an electron‐delocalized, ion‐coordinative network that synergistically mediates Li–S redox chemistry. When interfaced with graphene, the TUS‐44@G layer functions as a catalytic and chemisorptive interface, enabling efficient ...
Kai Sun   +11 more
wiley   +1 more source

Sulfide Generation by Dominant Halanaerobium Microorganisms in Hydraulically Fractured Shales

open access: yesmSphere, 2017
Hydraulic fracturing of black shale formations has greatly increased United States oil and natural gas recovery. However, the accumulation of biomass in subsurface reservoirs and pipelines is detrimental because of possible well souring, microbially ...
Anne E. Booker   +14 more
doaj   +1 more source

Hybrid Emulsion‐Dispersion (HED) Polymerization Enables One‐Pot Synthesis of Functional Janus Nanoparticles

open access: yesSmall, EarlyView.
A hybrid emulsion‐dispersion (HED) polymerization strategy enables one‐pot synthesis of functional Janus nanoparticles without seed preparation or multistep processing. Controlled morphology and surface stratification produce rechargeable antimicrobial coatings with durable activity. HED provides a simple and scalable route toward functional asymmetric
Utsav Kumar Dey   +11 more
wiley   +1 more source

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