Membrane & Separation Technology News articles from February 2001

Membrane & Separation Technology News archives from February 2001

ADVANCED FILTRATION: Instrument Purifies, Concentrates, Desalts.
February 1, 2001... Gradipore has developed a preparative purification that uses electrophoretic techniques and polyacrylamide membranes to isolate macromolecules, including proteins, nucleotides and complex sugars, from complex biological mixtures. The...

Montage Simplifies Life Science Separations.
February 1, 2001... Millipore Corp. has introduced the first products in a line of Montage Kits for the genomics, proteomics and drug-discovery markets. The two Montage Genomics Kits, Plasmid Miniprep and PCR Cleanup, include all necessary reagents, disposables...

VSEP Technology Takes the Plunge.
February 1, 2001... New Logic Intl. is integrating high-shear vibratory shear enhanced processing (VSEP) technology into a submersible membrane system that offers flux rates two to five times higher than competitive submerged systems and at a fraction of the cost....

Grafting Spawns Smart Membranes.
February 1, 2001... Researchers from the Joint Institute of Nuclear Research (Dubna, Russia), the Institute of Physical Chemistry RAS (Moscow, Russia), and the Institute of Crystallography (Moscow, Russia) have manufactured membranes that change pore size,...

ION EXCHANGE: Composites Prove Strong, Stable, Elastic.
February 1, 2001... Because polymers traditionally used to fabricate ion-exchange membranes may be brittle, fragile, and hard (or impossible) to form into films, an international team of scientists from the Institute of Macromolecular Compounds (St. Petersburg,...

GAS SEPARATION: Carbon Fibers Cut Refrigerant Emissions.
February 1, 2001... Carbon Membranes, Ltd. has developed a hollow-fiber, carbon molecular sieve module that separates air from commonly used refrigerants, reducing emissions from air venting practices that release ozone-depleting gases. The product is based...

BIOMEDICAL AND BIOMEMBRANES Hemopurifier Module Eliminates Blood Toxins.
February 1, 2001... Aethlon Medical has developed an extracorporeal membrane circuit for blood purification. Known as a hemopurifier, the device immobilizes pharmaceutical compounds that may cause problematic side effects, when injected, within standard...

MARKETS AND APPLICATIONS Guidelines Limit Metal Discharges.
February 1, 2001... The EPA has proposed effluent limitation guidelines for wastewater discharges into waterways from the metal products and machinery industry, including aerospace, electronic equipment, hardware, railroad, ship, and stationary industrial...

INDUSTRY NEWS: Norit Contracts for XIGA UF Plants.
February 1, 2001... Norit B.V. has recently signed two contracts to provide XIGA ultrafiltration for process water treatment at General Motors, Shanghai, and potable water at an Inverness, U.K., drinking water plant. XIGA UF, a dead-end filtration technology...

NATCO Seeks Southeast Asia.
February 1, 2001... The NATCO Group, owners and suppliers of Cynara membrane technology, is opening offices in Singapore to further opportunities in Southeast Asian gas field markets. The company is installing a $72 million Cynara system for Carigali/Triton in the...

U.S. Filter Builds Kentucky MF Plant.
February 1, 2001... Kentucky's Logan-Todd Regional Water Commission has selected U.S. Filter to provide a $3.8 million Memcor CMF (continuous microfiltration) system for its $55 million water treatment expansion. The first-of-its-kind in the state, the expansion...

Zenon CEO Assesses Membrane Market.
February 1, 2001... In a January interview with The Wall Street Transcript, Zenon CEO Andrew Benedek describes the state of membrane technology and Zenon's place in the membrane market for water and wastewater treatment. According to Benedek, the company was...

Pall Ready for U.S. Leukoreduction.
February 1, 2001... The Advisory Committee on Blood Safety and Availability voted in favor of universal blood filtration for the U.S last month. The group will forward the recommendation to the U.S. Department of Health and Human Services, which is expected to...

In the News.
February 1, 2001... CoorsTek Drops Membrane Line. Membrane customers wishing to remain nameless have confirmed reports that CoorsTek (Golden, CO) will discontinue its line of ceramic membrane products. Spokespersons at the wastewater treatment firm, which has...

Personnel Updates.
February 1, 2001... Ionics Shuffles Staff in Consumer Water, POU. Ionics, Inc. (Watertown, MA) has reorganized staff positions in its Consumer Water Group; at the same time, top managers at the company's point-of-use business have left the company. According to...

Recent Patents.
February 1, 2001... Affinity Membranes Purify Macromolecules. Eli Ruckenstein and Xianfang Zeng of the Research Foundation of the State University of New York (Amherst, NY) have developed methods of preparing microporous or macroporous affinity membranes, and a...

Selected Abstracts.
February 1, 2001... Layered Polyelectrolytes Enhance Pervaporation Researchers at the Institut fr Physikalische Chemie der Universitt zu Kln (Cologne, Germany) have prepared polyelectrolyte multilayer membranes that improve pervaporative separation of...

CALENDAR.
February 1, 2001... April 3-4, 2001, Ultrapure Water 2001 Conference and Exposition, Wyndam Franklin Plaza Hotel, Philadelphia, PA. Contact: Tall Oaks Publishing, Inc.; Tel: 303/973-6700, Fax: 303/973-5327; Email: water@talloaks.com. April 22-25, 2001, Third...

INDUSTRY INSIGHT:Gas Transport Properties and Structural Characterization of Porous Silver Membranes.
February 1, 2001... Edward Gobina, Ewen Beattie School of Mechanical and Offshore Engineering The Robert Gordon University Schoolhill, Aberdeen ABIO IFR Great Britain A study has been carried out to investigate the effectiveness of commercially available...

Background.
February 1, 2001... Gas separation membranes have been used to segregate the components of a gas by making use of the fact that the component gases in the mixture will pass through the membrane structure at different rates because of differences in their molecular...

Membrane Material.
February 1, 2001... The gas-separating membranes used in the study consisted of pure silver discs having a thickness of 0.025 nm. They are available commercially and in the sheet/film form, the silver membrane is usually temper-rolled to give a uniform thickness....

Permeation Measurements.
February 1, 2001... The gas transport measurements were carried out in a continuous- flow turnkey gas diffusion test apparatus. The set-up consisted of a gas delivery system, the permeation cell, and a flow-measuring device. The permeation cell consisted of a...

Theoretical Considerations.
February 1, 2001... The permeance of a gas through a membrane barrier is the gas flux/gas flow per unit of membrane area) divided by the pressure drop across the membrane. In the most simple approximation, the equation has the contributions of both viscous and...

Results and Discussion.
February 1, 2001... There are a number of parameters that affect the transport properties of silver membranes, including quality, morphology, and thickness. Gas transport experiments carried out on thick silver foils did not show any significant permeation, which...

Industrial Applications.
February 1, 2001... Silver membranes are being viewed as potential candidates for new- generation chemical reactor systems. In the process industry, they will have applications in oxygen enrichment and purification processes.

Conclusion.
February 1, 2001... Pure porous silver membranes have been evaluated for their gas transport characteristics using pure and mixed gases, respectively. X-ray photoelectron spectroscopy confirmed an alteration in the structure of the bulk silver during exposure to...