Gore-Tex membrane filters clean exhaust gases

Gore-Tex membrane filters clean exhaust gases

MembDec_noheader.qxd 27/01/2003 12:18 Page 3 NEWS experienced 4% growth in the third quarter, which met expectations for this profitable core busi...

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MembDec_noheader.qxd

27/01/2003

12:18

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NEWS experienced 4% growth in the third quarter, which met expectations for this profitable core business segment. In the third quarter, Millipore’s life sciences business comprised 14% of total revenues, the biotechnology business 33%, and the other bioscience business 53%. Lunger concludes that while the current business climate remains uncertain, the company will continue to tightly control costs and deliver solid earnings, and it will remain committed to its strategies, and research and development investments. He says that the overall life sciences research market is growing less than predicted a year ago by industry analysts, and the market is changing, but there is a strong and continuing need to improve the drug discovery and screening process. For more information, contact: Millipore Corp, 80 Ashby Road, Bedford, MA 01730-2271, USA. Tel: +1 781 533 6000, Fax: +1 781 533 3110.

Hydranautics offers flush-cut element design US-based membrane technology company Hydranautics is now offering all of its standard 8-inch (20-cm) elements with a new flush-cut design. The new anti-telescoping device (ATD) provides improved face-toface contact for hydraulic loading giving a more uniform distribution of the loads, says the Californian firm. The new ATD retains the company’s signature perforated face plate that protects the membrane from large particulate damage. The spiral pattern design lends itself to uniform water distribution across the face of the element. It reduces the pressure on the outside of the element and the core tube. The flush-cut ATD is easily identified by its ivory colour and spiral configuration, as opposed to grey which is used for the straight-spoke ATD. New internal interconnectors also have been introduced, and will fit both the flush-cut elements as well as the old style ones.

The flush-cut elements are fully compatible with many other elements in the industry. Hydranautics is now focusing on a method of internal sealing, though element designs that are not flush cut, and are currently in use, allow for either internal or external sealing. For more information, contact: Hydranautics, 401 Jones Road, Oceanside, CA 92054, USA. Tel: +1 760 901 2500, Fax: +1 760 901 2578. Or contact: Hydranautics, Little Eastfield, Eastfield Lane, Whitchurch on Thames, Reading RG8 7EJ, UK. Tel: +44 1189 843 106, Fax: +44 1189 845 957.

Gore-Tex membrane filters clean exhaust gases New filtration technology that has been developed in the USA at the University of North Dakota promises to clean exhaust gases from coal-fired power plants to levels that meet today’s and any proposed air emission standards for fine particulate. The scientists at the university’s Energy & Environmental Research Center (EERC) also claim that the technology can cut mercury emissions as well. Called the ‘Advanced Hybrid System’, it combines two established techniques – fabric filters and electrostatic precipitation (ESP). By using filter bags made of Gore-Tex membrane, the EERC scientists say they can remove an order of magnitude more fine particulate than conventional filter bags. A traditional disadvantage of filter bags is that they slow the airflow, but the workers at EERC claim the combination of bags with ESP solves this problem. The fabric filters in the new system are arranged next to ESP units, so most fly ash is captured by the ESP before reaching the bags, enabling them to operate at high air-to-cloth ratios. When the GoreTex-based bags clog with caked dust, they are cleaned with a pulse of compressed air, and the dust

which is blasted loose is caught by the adjacent ESP or the next filter bag that is positioned downstream. The system has been in place at the Big Stone power plant in South Dakota since 1999, and has now been installed on a large cement kiln in Cagnano, Italy. According to the EERC, tests at the Big Stone plant, using various grades of bituminous coal, produced good results. For instance, using an inlet flue gas with 5362 mg/m³ particulates, generated an outlet gas with 0.21 mg/m³ particulates, when the gas was at 140°C. The net efficiency for the 15 hours during which the test was done was 99.996% removal. By injecting activated carbon into the flue gas, the system can also remove mercury. Recent tests have shown it can remove up to 90% of the mercury from the coal, and it does so more cheaply than existing technology.

In Brief Desalination expert joins USFilter USFilter has appointed Harbans Kohli as its municipal reverse osmosis product manager for its capital projects organization. Kohli comes to USFilter with more than 22 years of experience in the desalination industry where he has held positions in project management, sales and marketing. He will direct USFilter’s participation in the municipal reverse osmosis market place.

Toray expands RO membrane capacity

Water treatment plants are upgraded In the USA, Lancaster in Pennsylvania is upgrading its Conestoga and Susquehanna water treatment plants, rated at 45-million litres (12 million gallons) per day and 91 million litres (24 million gallons) per day, respectively, according to a report by Water Technology magazine. The report claims that the project is among the USA’s first to retrofit older plants with low-pressure membrane technology. Officials say that the plants, which were originally constructed in 1933 and 1955, need to be upgraded because of their age, impending regulations and increased demand. An engineering study conducted by the city and its consultants revealed that low-pressure membranes would provide the best option for the upgrade.

In Japan, Toray Industries Inc is to boost production capacity for reverse osmosis (RO) membranes at its production site in Ehime Prefecture, according to a report by The Nikkei Business Daily. The firm says that it will increase production capacity by introducing advanced equipment financed by an investment of around ¥2 billion. By the autumn of 2003, it plans to raise the daily output volume to 4 million m3, or 2.5 times its current level. Toray’s membrane products are used in ocean water desalination plants and equipment that produces ultrapure water for cleaning semiconductors. The demand for membranes is rising, claims the company. It reports that its water-processing operations, including sales of RO membranes, generated sales of about ¥20 billion in the fiscal year

Inge appoints chief sales officer John Williams has been appointed chief sales officer at Inge AG, the German independent manufacturer of membranes for the treatment of drinking water and wastewater. As a member of the management team, Williams is responsible for sales worldwide. At the same time, he is developing operations at the company’s subsidiary in Illinois, USA, which was set up during September 2002. He has worked for Hydranautics since 1991 where, before leaving, he was responsible for the American and Canadian markets as director of municipal sales. Before this position, he spent seven years as a managing director developing six branch operations and an international sales network.

For more information, contact: Energy & Environmental Research Center, University of North Dakota, PO Box 9018, Grand Forks, ND 58202-9018, USA. Tel: +1 701 777 5000, Fax: +1 701 777 5181.

3 Membrane Technology December 2002