1 edition of Energy efficient membrane processes for the separation of organic liquids found in the catalog.
Energy efficient membrane processes for the separation of organic liquids
by U.S. Department of Energy
|The Physical Object|
They are also easy to scale up, energy efficient, and already widely used in various gas and liquid separation processes. Different types of membranes such as common polymers, microporous organic polymers, fixed-site-carrier membranes, mixed matrix membranes, carbon membranes as well as inorganic membranes have been investigated for CO 2. Processing of dilute liquid streams in the industries like food, agro-, biotechnology, pharmaceuticals, environment, and so forth needs special strategy for the separation and purification of the desired product and for environment friendly disposal of the waste stream. The separation strategy adopted to achieve the goal is extremely important from economic as well as from environmental point.
A review of air separation technologies and their integration with energy conversion processes A.R. Smith), J. Klosek Air Products and Chemicals, Inc., Allentown, PA , USA Received 1 April ; received in revised form 1 October ; accepted 30 November Abstract. Pervaporation, in its simplest form, is an energy efficient combination of membrane permeation and evaporation. Â It's considered an attractive alternative to other separation methods for a variety of processes.Â For example, with the low temperatures and pressures involved in pervaporation, it often has cost and performance advantages for the separation of constant-boiling azeotropes.
The widely used membrane processes include microfiltration, ultrafiltration, nanofiltration, reverse osmosis, electrolysis, dialysis, electrodialysis, gas separation, vapor permeation, pervaporation, membrane distillation, and membrane contactors. All processes except for . Energy-efficient membrane separation technologies are considered a highly cost-competitive alternative to PSA process for bioethanol concentration and purification. In Phase I, nGimat made great progress in generating high-separation-performance NaA zeolite membranes on cheap porous supports.
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On the other hand, OSRO is a pressure-driven membrane separation process (Fig. 2 c) that does not involve a phase change, and this offers substantial energy savings compared with conventional separation by: 2.
Yet, porous liquids can also be used to produce solid separation membranes with particularly advantageous properties. The researchers produced membranes from a plastic material and the chemically modified ZIF They succeeded in increasing the proportion of modified ZIF in the membrane to percent without making it mechanically unstable.
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.
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.
   MD is a thermally-driven separation process (possible due to phase change) that has a certain analogy to a heat engine in terms of energy efficiency, 9 and should be really. Impressively, the membrane also exhibits good stability without obvious changes in the efficiency even after 20 cycles.
Thanks to the low cost, fast synthesis, and energy-efficient separation as well as good stability, this superhydrophobic membrane can be a promising candidate for many oil/water separation processes in the future. Data. About this book Membrane Technology - a clean and energy saving alternative to traditional/conventional processes.
Developed from a useful laboratory technique to a commercial separation technology, today it has widespread and rapidly expanding use in the chemical industry. Membrane filtration is a promising technology for the separation of organic immiscible liquids.
Surface topography has direct impact on the wettability of membranes, and. Recently, Huang et al. (Ind. Eng. Chem. Res.49, ) proposed a hybrid steam stripping-membrane separation process, and showed that energy consumption for separation is reduced by.
The term liquid membrane transport includes processes incorporating liquid-liquid extraction (LLX) and membrane separation in one continuously operating device. It utilizes an extracting. These kinds of membrane processes are beneficial for the separation of e.g. azeotropes. In distillation the complete liquid feed is evaporated leading to high energy demands.
By replacing distillation by the pervaporation membranes or combining the two processes large energy savings are possible.Volatile Organic Compound Liquid Recovery by the Dead End Gas Separation Membrane Process: Theory and Process Simulation.
Industrial & Engineering Chemistry Research.Among all liquid separation technologies such as distillation and adsorption, the pervaporation process is most energy-efficient technologies for membrane separation of organic liquid mixtures.