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Archives :: Processing & Handling :: Separation (Liquid-Liquid & Gas-Liquid) :: Membranes

Displaying 41 - 55 of 55 stories.
February 15, 2008
Transfield Services Ltd. (edlinks.che.com/7369-549) and WorleyParsons Ltd. (both North Sydney, Australia; edlinks.che.com/7369-550) have been selected to construct two mobile-desalination units (MDU) for contingency use in the Brisbane River. The project is expected to provide 100-million...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Chementator-Desalination-barges-based-on-reverse-osmosis_3694.html
December 15, 2007
Ethanol production is an energy-intensive process in which about 50% of the cost is for distillation and dehydration of the ethanol. A membrane system that does the same job, but reduces the energy consumption by up to 50%, has been developed by Vaperma Inc. (St-Romuald, Quebec; Canada; edlinks.che.com/6902-533). The method was described by Christian Roy, vice-president, business development, at the Annual...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Chementator-Membrane-Cuts-the-Cost-of-Ethanol-Dehydration-_3575.html
December 15, 2007
A plastic membrane that allows CO2 and other small molecules to move through its pores while largely preventing the movement of larger molecules like CH4, has been developed by a team of researchers from CSIRO Materials Science and Engineering and the Water for a Healthy Country Flagship (Melbourne, Australia; edlinks.che.com/6902-537); the Center for Energy and Environmental Resources, the Department of...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Chementator-This-Membrane-Mimics-Mother-Nature-to-Separate-CO2_3579.html
November 15, 2007
Within five years, four large power plants in Europe will be outfitted — for testing at the pilot scale — with energy-efficient CO2-filtering membranes that are being developed at the Norwegian University of Science and Technology (NTNU; Trondheim; edlinks.che.com/6901-531). Professor May-Britt Hägg, head of the membrane research group (MEMFO) at NTNU’s chemical engineering...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/This-membrane-could-reduce-the-carbon-footprint-for-combustion-power-plants_3504.html
September 1, 2007
Hollow-fiber membrane tubes that are selectively permeable to oxygen have been constructed by researchers from the School of Chemical Engineering and Advanced Materials at Newcastle University (edlinks.che.com/6899-542), in collaboration with the Chemical Engineering Dept. at Imperial College London...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/O2-permeable-ceramic_3348.html
September 1, 2007
    Fouling is one of the most vexing problems in water-treatment systems that use membranes to remove suspended and dissolved particles. The deposition and accumulation of these substances on membrane surfaces inevitably lead to loss of performance for the membrane [1]. While there are several strategies for reducing fouling, the right solution varies with the process and type of fouling.  ...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Strategies-for-Controlling-Membrane-Fouling_3364.html
May 1, 2007
    Pure water is an essential ingredient in the manufacture of a vast amount of products in the U.S. and, of course, throughout the world. In the industry for which I work, electricity generation, high-purity water is an absolute must for feeding high-pressure steam generators. But of course, steam generation is also important in the petroleum-refining and petrochemical industries...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Microfiltration-For-CPI-Wastewater_3147.html
May 1, 2007
In order to produce ethanol with nearly 100% purity from fermentation broth, conventional processes use a two-step distillation operation, which accounts for almost 55% of the total energy requirements. Therefore, improving the concentration step is a key to reducing the costs of making bioethanol. A promising step in this direction is a new gating membrane being developed by professor Shin-ichi Nakao at...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/The-cost-for-concentrating-ethanol-may-drop-thanks-to-a-membrane-that-acts-like-a-valve_3257.html
March 1, 2007
For developing a new technology that traps carbon dioxide and other pollutants so they can be removed, researchers from the University of Bath's Dept. of Chemical Engineering (edlinks.che.com/6893-551) have received the...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Trapping-CO2_3226.html
November 1, 2006
Researchers from the Center for Synthesis and Chemical Biology (CSCB; Dublin; edlinks.che.com/6518-551) have developed an ultrathin, nanoporous membrane that can separate carbon dioxide from nitrogen at 600°C; up to now, no...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Hot-CO2-separation_3042.html
October 1, 2006
It is well known that palladium membranes are ideal for purifying hydrogen because they allow only H2 to pass through (via diffusion of H atoms) while blocking all other molecules. Because contaminants cannot pass through this pore-free "filter", Pd membrane separation is especially suitable for ultrahigh-purity applications, such as those in the electronics industry, says Charles Krueger, vice...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Reducing-the-cost-for-pro-ducing-high-purity-hydrogen_3010.html
August 1, 2006
Eltron Research, Inc. (Boulder, Co.; edlinks.che.com/6515-553), in partnership with the U.S. Dept. of Energy's (DOE; Washington, D.C.) National Energy Technology Laboratory...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/H2-separation_2992.html
June 1, 2006
Researchers at the Lawrence Livermore National Laboratory (LLNL; Calif.; edlinks.che.com/5830-551) have constructed a membrane of carbon nanotubes (CNTs) on a silicone chip, which has the potential to reduce the...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Chementator-Nanotube-membranes_2963.html
March 1, 2006
Next month, Mekorot, Israel National Water Company Ltd. (Tel Aviv, Israel) will start up what is claimed as the world’s first ion-exchange system for selectively removing boron from potable water. The plant, designed and constructed by Treitel Chemical Engineering Ltd. (Tel Aviv; edlinks.che.con/5827-532), will treat 6,500 m3/d of reverse-osmosis-product water at Mekorot’s brackish water...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Chementator-Removing-boron-from-drinking-water_2903.html
March 1, 2006
Researchers at the Dept. of Chemical Engineering, University of Texas at Austin (edlinks.che.com/5827-547) have developed a rubbery membrane that can be used purify hydrogen. The membrane, based on...
http://www.che.com/processing_and_handling/sep_liquid_liquid_and_gas_liquid/membranes/Chementator-H2-separation_2905.html
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