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Membrane Technology
US firms plan to use membrane contactors to remove radon and VOCs from municipal water
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n the USA, Membrana-Charlotte, a division of Celgard Llc, has entered into a limited exclusive agreement with Layne Christensen Co’s Water Technologies Division, under which the firms are planning to use Liqui-Cel membrane contactors in municipal water applications. The companies say that since 2010 they have been jointly evaluating the use of this technology for removing radon and volatile organic compounds (VOCs) from municipal water. Allen Pittman, who is vice president of the Liqui-Cel membrane contactors business, said: ‘We are excited about this agreement. This relationship provides an excellent opportunity to expand our presence in this market segment and to establish Liqui-Cel membrane contactors as the technology of choice for radon and VOC removal applications.’ Liqui-Cel membrane contactors can be used to create a modular degassing system that can be used in virtually any area. According to Membrana-Charlotte, they are rapidly replacing older de-aeration technologies as the product of choice in digital printing applications, and in the analytical and biotechnology, semiconductor, power-generating, pharmaceuticals, photographic, and food and beverage industries. The contactors contain thousands of Celgard microporous hollow fibres that are used in various applications for adding (or removing) oxygen, carbon dioxide, nitrogen and other gases to (or from) different liquids. They also use what is referred to as an ‘ExtraFlow’ baffle – in the middle of the contactor – which directs the liquid radially across the array. A strip-gas or vacuum, either separately or in combination, is applied on the lumen side of the hollow fibres. Because of its hydrophobic nature the membrane acts as an inert support to enable direct contact between a gas and liquid phase without dispersion. By applying a higher pressure to the liquid stream, relative to the gas stream, the dissolved gas in the liquid travels through the porous structure. Contacts: Membrana-Charlotte, 13800 South Lakes Drive, Charlotte, NC 28273, USA. Tel: +1 704 587 8888, www.liquicel.com
Layne Christensen Co, (Water Technologies Division), W229 N5005 DuPlainville Road, Pewaukee, WI 53072, USA. Tel: +1 262 246 4646, www.laynechristensen.com
Australia’s OneSteel uses desalination to reduce its reliance on mains water
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teel producer and distributor OneSteel Ltd will be able to substantially reduce its reliance on mains water following the commissioning of a sea-water reverse osmosis (RO) desalination plant at its manufacturing facility based in Whyalla, South Australia. Provided by desalination company Osmoflo Pty Ltd, the plant will produce more than 4 million litres of desalinated water a day, or 1.6 gigalitres per annum. This will replace water currently drawn from the River Murray through the Morgan–Whyalla pipeline. Fresh water that is produced will be used in industrial processes. Osmoflo has financed, designed and built the plant, and will operate it on behalf of OneSteel for 10 years. The official commissioning of the desalination plant came only days after the Federal Government announced its revised plan to revitalise the Murray– Darling river network, which is in a state of extreme stress caused by years of over-extraction. Built in two trains – each featuring a pretreatment stage using microfiltration membranes, followed by RO to remove salts – the plant incorporates energy-saving, remote monitoring and control technologies. Reject water, or brine, produced by the desalination process is transferred to OneSteel’s saltwater management system where it is substantially diluted prior to being discharged into the Spencer Gulf, the westernmost of two large inlets on the southern coast of Australia, in the state of South Australia, facing the Great Australian Bight. ‘This plant, which is fully compliant will all regulatory and environmental standards, is a prime example of an industrial concern taking the lead in providing for its own water needs instead of continued total reliance on increasingly expensive mains water from government instrumentalities, said Carmine Ciccocioppo, General Manager, Operations, Osmoflo. ‘At Osmoflo we are involved in a number of such projects with major companies that are assuming more and more responsibility for water security. Schemes which enable the use of alternatives to potable supplies for industrial water needs are increasingly financially
January 2012
NEWS attractive in the face of rising costs of mains water from utilities.’ The desalination plant is one of a number of water-saving initiatives introduced by OneSteel. These include recycling and reuse of treated effluent, blow-down and tailings water. Osmoflo is Australia’s largest designer and manufacturer of desalination plants for the resources, energy, industrial and municipal sectors, and is 40% owned by global trading entity Marubeni Corp. Contacts: Osmoflo Pty Ltd, Level 4, 97 Pirie Street, Adelaide 5000 South Australia, Australia. Tel: +61 8 8282 9700, www.osmoflo.com
Syringe filter is certified for low extractables in LCMS applications
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S-based filtration, separation and purification company Pall Corp has introduced a syringe filter that is certified for low extractables in high-performance liquid chromatography/mass spectrometry (LCMS) applications. Designed specifically for LCMS, the Acrodisc MS syringe filter improves the accuracy of testing, enhances LCMS performance, and extends the longevity of testing instrumentation, says the company. The low extractable levels minimise interference with the ionisation process and reduce the need for re-testing. This lowers costs while minimising down time caused by unexpected contamination. To ensure high performance, product tubes are packaged individually so that filters not currently in use remain sealed and protected from external contamination. Using the firm’s water wettable polytetrafluoroethylene (WWPTFE) membrane, contained in a high-density polyethylene housing, the syringe filter can be used with both organic and aqueous solvents. It offers excellent chemical resistance, good particulate retention and minimal protein adsorption. This protects instrument columns from particulate build-up and reduces the frequency and cost of replacement. It also enables more consistent LCMS testing performance. ‘Pall’s Acrodisc MS syringe filter is the newest innovation in our comprehensive line of syringe filters and the first LCMS-certified syringe filter that is low in extractables,’ explained Larry O’Connell, Senior Vice President, Pall Global Lab Products.
January 2012
‘It will improve the accuracy, cost and reliability of high-performance LCMS testing and the applications for this advancement are extensive.’ Contact: Pall Corp, 25 Harbor Park Drive, Port Washington, NY 11050, USA. Tel: +1 516 484 5400, www.pall.com
Bio-filters combine performance of membrane-type media with enhanced flow characteristics
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M Co has released details of its recently launched range of bioburden reduction filters, which combine the high filtration performance of membrane-type media with enhanced flow characteristics – reducing system costs and extending service life. The new Lifeassure PNA Filter Series, available from 3M’s Purification division, can be used as pre-filters or final filters, where a high level of microbiological control is required. They are designed specifically for biotechnology, pharmaceuticals and biological applications, such as the production of vaccines, laboratory fluids, blood products, fine or bulk chemicals and purified water. ‘The advanced technologies we have engineered into the new Lifeassure PNA Filter Series will enable customers in the bio-process, pharmaceuticals and other sectors to reduce capital costs and operating overheads while simultaneously benefiting from improved microbiological control,’ commented Andrew Whitehouse, Sales and Marketing Manager, 3M Purification. Lifeassure PNA filter assemblies are available with either a 0.2 μm or 0.45 μm filtration rating, and feature an asymmetric membrane based on the company’s Advanced Pleat Technology (APT), which maximises the useful surface area of the filter. In addition, optimised filter-media support layers are positioned upstream and downstream of the membrane. Together, these innovations increase flow rate per unit pressure, enabling designers to meet performance targets while using fewer cartridges. This, in turn, enables small, low-cost systems to be created. In continuous operating mode the filters achieve a longer service life, reducing the costs that are associated with frequent filter changes. In batch process applications, the higher flow rate can help reduce the number of filters required to process a given batch volume.
In Brief Pall’s first-quarter sales increase by over 16% US-based filtration, separation and purification company Pall Corp reports that its sales for its first quarter of fiscal year 2012, which ended on 31 October 2011, totalled $705.6 million – a 16.5% gain over the previous year. Diluted earnings per share (EPS) were $0.59, compared with $0.61 posted for the corresponding period a year earlier. Pro forma EPS amounted to $0.74 (excluding restructuring and other charges), compared with $0.62 recorded for the equivalent period of 2010 – representing an increase of 19.4%. Axeon details expansion plans for 2012 Axeon Water Technologies, a US-based manufacturer of membrane systems, elements, housings and components has announced plans for expansion that include the relocation of its operations and corporate headquarters, during the first quarter of 2012, to Temecula in California. ‘We have been preparing for this move for some time. After substantial growth of our customer-base, we knew we would need larger and more versatile facilities, and the City of Temecula has been helpful in finding a new home for our team and operations,’ Commented Augustin Pavel, Chief Executive Officer, Axeon Water Technologies. More information: www.axeonwater.com Toray appoints new CEO to run its membrane business in Europe Hiroyuki Yamamura has become the chief executive officer (CEO) and president of Toray Membrane Europe Ag. Yamamura has been promoted by Toray Industries Inc to run the firm’s head office in Switzerland. In his new role he will continue to focus on the strategic market development and lead the ambitious drive covering Europe, the Middle East and Africa. Yamamura has over 34 years of experience with Toray and working in the global water-treatment industry, with more than 20 years in dedicated research and development in membrane and environmental technologies. NanoH2O receives Aquatech Innovation Award US manufacturer of reverse osmosis (RO) membranes for sea-water desalination NanoH2O Inc has announced that its QuantumFlux RO membrane has received the 2011 Aquatech Innovation Award in the ‘Water Supply’ category. Among over 800 water technology exhibitors, the company and four other category winners were announced at the opening ceremony of the Aquatech Amsterdam Exhibition which was held recently in the capital city of The Netherlands.
Membrane Technology
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