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

Displaying 261 - 277 of 277 stories.
August 1, 2006
Researchers at Pacific Northwest National Laboratory (PNNL; have demonstrated a new process for treating water contaminated by toxic perchlorate ions, found in drinking water in 35 U.S. states. As in conventional treatment methods, the process uses ion exchange to separate the ion from water. However, instead of...
August 1, 2006
Eltron Research, Inc. (Boulder, Co.;, in partnership with the U.S. Dept. of Energy's (DOE; Washington, D.C.) National Energy Technology Laboratory...
July 1, 2006
PuriTech (Dessel, Belgium; has developed a continuous ion-exchange system, called Ionex, which uses up to 75% less water and requires about half the volume of ion-exchange resin, compared with traditional fixed-bed systems, says PuriTech projects director Filip Rochette. Ionex also achieves a higher separation efficiency and product concentration compared to alternative systems...
June 1, 2006
Sodium chloride aerosols are widely used as part of bronchial provocation tests to identify people with asthma, and those who wish to enter military or police service. To maximize their effectiveness, salt aerosol crystals should be as small as possible (< 5 μm dia.), but current production methods, such as milling, spray drying, and antisolvent crystallization, tend to produce NaCl particles that...
June 1, 2006
Researchers at the Lawrence Livermore National Laboratory (LLNL; Calif.; have constructed a membrane of carbon nanotubes (CNTs) on a silicone chip, which has the potential to reduce the...
May 1, 2006
Toyo Engineering Corp. (TEC; Tokyo; has developed a new, cryogenic process for extracting natural-gas liquids (NGLs; ethane, propane, butane and other hydrocarbons) from liquefied natural gas (LNG). The Coreflux-LNG process boasts an ethane recovery efficiency of around 98%, compared to 90–93% efficiencies achieved by alternative processes, claims TEC. The process will be...
April 1, 2006
    Cartridge trays, defined below, can be the perfect hardware solution for distillation columns that are less than 3 feet (0.9m) in diameter and have a unique need for trays. Packing is usually the preferred choice for small-diameter columns, but there are several circumstances in which trays are advantageous. Examples include fouling systems, certain foaming systems, high-pressure applications...
April 1, 2006
The presence of TCA (2,4,6-trichloroanisole) in cork can lead to undesirable tastes or smells in wine; this so-called cork taint affects about 3–6% of bottled wine. Although techniques (such as boiling in water or striping with superheated steam) have been used to remove TCA from cork, removal efficiencies have been limited to 70%, says Eduard Lack, R&D director at Natex...
April 1, 2006
Another process that removes up to 90% of the TCA from cork (see item above) was recently launched by Cork Supply USA (Benica, Calif....
March 1, 2006
Siemens Industrial Solutions and Services Group (Erlangen, Germany; has built, commissioned and deployed the largest mobile water filtration system in the industry. The Horizontal...
March 1, 2006
    Minor components trapped in distillation columns can react to form solids that cause major problems. The conventional responses to this situation focus upon dealing with the solids after they have become formed. A better strategy consists of preventing or minimizing the solids formation in the first place, by changing the column operating conditions.   Understanding the situation The...
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...
March 1, 2006
Researchers at the Dept. of Chemical Engineering, University of Texas at Austin ( have developed a rubbery membrane that can be used purify hydrogen. The membrane, based on...
February 1, 2006
A gas-liquid nozzle that reduces the size of the gas bubbles blown into a liquid — thus increasing the rate at which the gas is absorbed into the liquid — has been developed by a research team led by Jie Wu at CSIRO Manufacturing and Infrastructure Technology Div. (, in collaboration with CPE Ltd (Chemical Plant & Engineering; both Melbourne, Victoria, Australia...
January 1, 2006
Ultrasound Brewery Co. (Naruto, Japan; has developed a process that separates the water from dilute solutions of alcohol to achieve 99.5%, without using conventional evaporation or distillation. The company has tested the process in a pilot plant that produces 600–700 L/d of 99.5% ethanol from a 10–15% solution. The process, which combines irradiation with ultrasound...
January 1, 2006
A simple tank-and-siphon system for removing oil from wastewater has been launched internationally by an engineering team from the University of New South Wales (UNSW; Sydney, Australia; Called the Extended Gravity Oil Water Separator (EGOWS), it is described as an improvement on the American Petroleum Institute (API) gravity separator, in that it reduces the oil content of the...
January 1, 2006
Process System Enterprise Ltd. (PSE; London, U.K.; has launched the latest of a series of gPROMS Advanced Model Libraries (AMLs) for Gas-Liquid Contactors (GLCs). This “open model” library of high-fidelity, non-equilibrium-component models covers a wide range of gas-liquid-separation operations, including conventional packed columns for...
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