Publications by authors named "M Elimelech"
Tuning Metal-Organic Framework Linker Chemistry for Transition Metal Ion Separations.
ACS Appl Mater Interfaces
December 2024
The pressing demand for critical metals necessitates the development of advanced ion separation technologies for circular resource economies. To separate transition metal ions, which exhibit near-identical chemical properties, adsorbents and membranes must be designed with ultraselective chemistries. We leverage the customizability of metal-organic frameworks (MOFs) to systematically study the role of material chemistry in sorption and selectivity of Co, Ni, and Cu.
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- Soil dissolved organic matter (DOM) is essential for various ecosystems and human health, and this study focuses on its geochemical characteristics across 89 grassland soils in China during the dry season.
- It discovers a gradient in DOM composition from northern to southern China, showing that higher molecular weight fractions with lower biodegradability are linked to decreased soil respiration and productivity.
- The research identifies specific DOM fractions as potential indicators for nasopharyngeal and pancreatic cancer incidences, emphasizing the need for local strategies to manage soil DOM for better environmental and health outcomes.
Alcoholysis of poly(ethylene terephthalate) (PET) waste to produce monomers, including methanolysis to yield dimethyl terephthalate (DMT) and glycolysis to generate bis-2-hydroxyethyl terephthalate (BHET), is a promising strategy in PET waste management. Here, we introduce an efficient PET-alcoholysis approach utilizing an oxygen-vacancy (V)-rich catalyst under air, achieving space time yield (STY) of 505.2 g·g·h and 957.
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- * The membranes are made from specially engineered fibers that combine a strong core for durability with a responsive outer layer that can change properties based on CO levels.
- * These membranes not only achieve over 99.6% separation efficiency but also offer self-cleaning capabilities and can be produced in large sizes, making them suitable for practical industrial applications.
Organic solvent nanofiltration (OSN) is an emerging membrane technology that could revolutionize chemical separations in numerous vital industries. Despite its significance, there remains a lack of fundamental understanding of solvent transport mechanisms in OSN membranes. Here, we use an extended Flory-Rehner theory, nonequilibrium molecular dynamic simulations, and organic solvent transport experiments to demonstrate that solvent flow in OSN membranes is driven by a pressure gradient.
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