by U.S. Department of Energy .
Written in English
|The Physical Object|
10 hours ago 'Porous liquids' allow for efficient gas separation (Nanowerk News) Researchers have developed “porous liquids”: Metal-organic frameworks (MOFs), that are able to separate gas molecules of different sizes from each other, float – finely distributed – in a is because the particles have empty pores, through whose openings only molecules of a certain size can. 2. Membrane fabrication and competing technologies for gas separation processes Membrane fabrication processes. Today, virtually all gas separation membranes are made by processes based on the concept of phase inversion because it is the only commercially viable way known for making thin (i.e., of the order of nm or less), defect-free membranes at large enough Cited by: Abstract The membrane is the heart of a membrane separation process. Therefore, the development of sustainable and energy-efficient membrane separation processes relies primarily on the physicochemical and thermomechanical characteristics of the membrane material. Energy-efficient membrane technology has received tremendous attention for the separation of organic molecules; however, the separation of molecules of less than Da has remained challenging. Herein, a membrane fabricated from interfacial polymerization on a polyketone support was used as an organic solvent reverse osmosis (OSRO) membrane for the separation of organic liquid mixtures. .
1. Introduction. Owing to its energy-efficient and cost-effective benefits in liquid separation, membrane technology plays an increasingly significant role in various industrial and daily processes, ranging from water purification to solvent recovery to petroleum production [,,, ].In membrane separation, the target liquid is allowed to pass through the membrane while the impurities are. PV is a membrane-based process that combines permeation and vaporization and is used for separating two or multicomponent mixtures of various organic fluids through dense membranes. PV is a low energy process and it is very easy to operate. Metal-organic frameworks are an emerging and fascinating category of porous solids that can be self-assembled with metal-based cations linked by organic molecules. The unique features of MOFs in porosity (or surface areas), together with their diversity for chemical components and architectures, make MOFs attractive candidates in many applications. MOF membranes represent a long-term endeavor. Membrane-based processes may reduce the energy intensity of these separations if effective separation materials can be developed. Organic solvent nanofiltration has emerged as a separation process.
Membrane separations based on molecular differences in size, shape, and membrane-penetrant interactions have the potential for a fold increase in energy efficiency over thermal processes . 2 days ago Membrane separations have long been recognized as energy-efficient processes with a rapidly growing market. In particular, organic solvent nanofiltration (OSN) technology has . Typically organic liquid streams are processed by conventional thermal unit operations that consume high amounts of energy, operate at high temperatures and/or require additional chemicals for efficient separation. Our membrane based solutions offer potent alternatives or additions for new processes and a valuable tool for the retrofit of. superiorities bring this separation technology gradually into the realms of gas separation,[4,5] organic liquid separation,[6–8] reverse osmosis,[9,10] nanofiltration,[11,12] and so on. To date, membrane market has been dominated by polymeric mem-branes due to their low cost and easy to process. But one.