Introduction Elastic layered metal-organic framework (ELM) adsorbents exhibit a flexible two-dimensional latent porous crystalline structure. ELMs undergo abrupt reversible gated sorption transitions from an empty collapsed structure to a filled expanded porous state through cooperative adsorption of guest molecules between layer planes. Gated adsorption has been observed for methane, nitrogen,...

turally unrelated dye, fluorescein. The results obtained with this series of compounds are especially striking because the dyes differ only in the nature of the alkyl groups. Still more pronounced effects would be expected in studies of compounds having greater structural differences. Many obvious applications and extensions of these ideas are now being investigated and detailed results will be...

A new type of bonded stationary phase for liquid chromatography, with the properties of immobilized artificial membranes, has been synthesized. Alkyl-phosphate adsorbents were obtained by modification of aminopropyl silica gel. The structures of the synthesized materials were confirmed by use of instrumental techniques--elemental analysis, infrared spectroscopy (FTIR), and (13)C and (29)Si CP/M...

The as-grown CNTs and graphitized CNTs were used as adsorbents to remove 1,2-dichlorobenzene from water. The experiments demonstrate that it takes only 40 min for CNTs to attain equilibrium and the adsorption capacity of asgrown and graphitized CNTs is 30.8 and 28.7 mg/g, respectively, from a 20 mg/l solution. CNTs can be used as adsorbents in a wide pH range of 3–10. Thermodynamic calculations...

The critical Rayleigh number for convective flow of pore water through a permeable spherical body is derived. The result affords constraints on carbonaceous chondrite planetesimal sizes and rates of heat production. If the chemical compositions of carbonaceous chondrites are taken as evidence against flow of pore water, then the present calculations suggest that the parent bodies were less than...

Arvia®, a spin-out company o Manchester, UK is commercialising a water treatm the removal of low concentrations of organics technology is based on the adsorption of organics o adsorbents coupled with their electrochemical simple electrochemical cell. In this paper, the poten to adsorb microorganisms and electrochemicall present in water has been demonstrated. Bench have indicated that the proce...

Abstract Pharmaceutically active compounds (PhACs) are frequently detected emerging pollutants in water resources worldwide that provoke pernicious influences on human health and the ecosystem. Developing effective carbonaceous adsorbents from biomass for efficient removal of PhACs has lately drawn significant research attention. Herein, an cost-effective activated carbon was produced via ZnCl ...

Activated carbons are widely used as adsorbents, 11 [1-4].Activated carbons are widely used as adsorbents, 12 *Corresponding Authors: Angela Martins, Departamento de Engenharia Química and 13 CIEQB, Instituto Superior de Engenharia de Lisboa, R. Conselheiro Emídio Navarro, 14 1959-007 Lisboa, Portugal; Tel: +351 218317000; Fax: +351 218317001; E-mail 15 address: [email protected]; Ana P....

In this study, nanoscale zero-valent iron nanoparticles (NZVIs) were coated with silica and polydopamine using a two-step process. The coated nanoparticles were applied as adsorbents for removal of two common polycyclic aromatic hydrocarbons pollutants, phenanthrene (PHE) and anthracene (ANT) from aqueous system. Adsorption kinetics followed a pseudo-second-order model. Isotherms and thermodyna...