LANXESS offers new mixed-bed exchanger for demineralizing water

Specialty chemicals company LANXESS has developed the Lewatit NM 3367 mixed-bed ion exchange resin to demineralize the water used to charge and top up modern hot water heating systems. “The custom-designed mixed-bed system not only prevents scale formation in the parts of a heating system that convey water but also provides lasting protection against corrosion,” explained Hans-Jürgen Wedemeyer, manager Technical Marketing at LANXESS Deutschland. “This can’t be achieved simply by softening the water,” he added.

Details of the innovation
Lewatit NM 3367 differs from other mixed-bed systems on the market in several respects. The specific mixing ratio takes into account the fact that anion exchange resins generally have a lower capacity than cation equivalents. Were this not allowed for, further anions could react with the hydrogen ions released by the still active cation exchange resin after total loading of the anion exchanger. Carbonic acid would thus be generated from hydrogen carbonate anions, and even more aggressive mineral acids from chloride, nitrate or sulfate. “The higher proportion of anion exchange resin ensures a long service life and thus highly efficient demineralization with the new mixed bed,” explained Wedemeyer.

The system also owes this high efficiency to a special process for reloading the anion exchange resin used, which results in a hydroxide ion loading of over 90 percent. “Because this high loading cannot be reproduced during conventional mixed-bed regeneration, we advise against using regeneration,” continued Wedemeyer.

To ensure this high OH- loading is maintained over a long period during transportation and storage, the anion exchange resin must be protected against carbon dioxide, as bound hydrogen carbonate would otherwise form. Toward the end of the exchange cycle, this would then be displaced by anions with a higher binding affinity, which in turn would enable acid to form. “We use special gas-tight aluminum-coated film packaging to prevent any such subsequent formation of bound hydrogen carbonate. We also offer the mixed-bed system in a handy, relatively small container size of 12.5 liters,” said Wedemeyer. Once containers are opened, the contents can thus be quickly transferred to smaller gas-tight units such as cartridges or used in their entirely to fill a standard exchanger container.

Effective demineralization
The main advantage of demineralization for treating water in the heating circuit is that it removes not only the hardening alkaline earth cations but also their counterions, thereby producing salt-free water with a very low residual conductivity. “Even in the presence of oxygen, there is normally no significant corrosion with conductivities in the 1 μS/cm range,” revealed Wedemeyer. With such low conductivities, however, pH measurements are no longer meaningful because most pH meters require the medium to have a minimum conductivity that would no longer be achieved in this case. Furthermore, even the tiniest quantities of carbon dioxide or ions – from the sides of the glassware, for example – would significantly interfere with any measurement in open systems. “Conductivity is clearly the all-important evaluation criterion in this range,” said Wedemeyer.

If the conductivity increases to a typical switch-off point of 100 μS/cm toward the end of an exchange cycle, however, relevant standards such as VDI 2035 stipulate that a pH window of 8.2 to 9.5 must be complied with to prevent any corrosion. “Our tests revealed that this is ensured when using Lewatit NM 3367,” confirmed Wedemeyer. If the parts of the heating circuit conveying water are made of aluminum, this pH window is even smaller, extending from 8.2 to just 8.5. In such cases, the switch-off point would need to be brought forward to a conductivity of around 5 μS/cm so as to remain within the pH tolerance referred to.

Detailed information about products from the LPT business unit can be obtained online at


Jowat SE founds new subsidiary in Vietnam

The adhesives specialist from Detmold is continuing to expand in the Asia-Pacific region

Jowat has established a new company in Vietnam, continuing the enterprise’s strategy to supply major markets in the Asia-Pacific region with innovative bonding solutions and advisory service for application technology. The adhesives specialist from Detmold founded the new subsidiary in Ho Chi Minh City in response to the growing demand from regional customers, which now can be met even faster and more effectively.

Jowat has expanded its global presence and has opened a new subsidiary in Vietnam with the objective to provide the optimum service for customers and an efficient supply with adhesives. This is a major step forward for the business development of the adhesives specialist from Detmold: The newly established company in Ho Chi Minh City comes in response to the rapidly evolving markets in the Asia-Pacific region and to the continuously growing demand for Jowat adhesives in the region, two years after Jowat increased its capacities by opening a new manufacturing site in Malaysia.

The newly established Jowat Vietnam Co. Ltd. is headed by Managing Director Sebastian Schäfers and continues Jowat Group’s strategy to supply the regional markets in Asia with superior adhesive products, innovative bonding solutions, and a comprehensive service with the customer in focus.

“By becoming actively and directly involved in the dynamic economy of Vietnam, we have opened up new, highly interesting business opportunities. This allows us to expand the international sales and support network of Jowat SE in the Asia-Pacific region and to further strengthen our business relationship with regional customers,” said Dr. Ralf Schelbach, Vice President Asia Pacific at Jowat SE.

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Cost-efficient, tailor-made water treatment for power plants

The appearance of the specialty chemicals group LANXESS at the annual “Chemistry in Power Plants” conference of VGB PowerTech e. V. and the trade exhibition held in parallel from October 24 to 26, 2017 in Koblenz will focus on cost-efficient, tailor-made solutions for water treatment in power plants. LANXESS can offer its customers ion exchange resins and membrane elements for reverse osmosis from its own production facilities.

“An intelligent combination of these two technologies offers powerful solutions. Our longstanding experience gathered from numerous reference projects with our premium products from the Lewatit and Lewabrane series is the key to success. Our customers benefit from this whenever we deal with cooling water and water-steam cycles,” explained Jean-Marc Vesselle, head of the Liquid Purification Technologies (LPT) business unit of LANXESS.

Energy efficiency is the key
The new membrane elements of the Lewabrane RO ULP (Reverse Osmosis – Ultra Low Pressure) series will be the highlight at the LANXESS booth in Koblenz. They are designed for an operating pressure of 7.6 bar. Compared with standard elements, a 40 percent lower operating pressure is being applied, which results in significantly lower energy and thus lower operating costs. “The membrane with high water permeability and resulting high flow rates that we offer with Lewabrane RO ULP also makes an effective contribution to reducing the investment costs for water treatment,” states Alexander Scheffler, who is responsible for the LPT membrane business at LANXESS.

In addition, the ULP membrane is characterized by the highest hydrophilic surface of all Lewabrane types. This hydrophilicity contributes to the formation of a thin, protective water film on the membrane surface. As a result, the adsorption of organic substances to the membrane – i.e. organic fouling – is reduced.

In addition, the ASD feed spacers used in the membrane elements, which create space for the flowing water between the membrane surfaces, reduce fouling. In this “Alternating Strand Design” (ASD), filaments of different thicknesses are used. They lead to an even water overflow and thus counteract organic growth. This results in lower operating costs, as fewer cleaning chemicals are required and longer intervals between cleaning operations are possible.

Ion exchange and reverse osmosis hand in hand
The efficiency with which ion exchange resins and membrane elements from LANXESS can be used in combination has been proven for several years by the treatment of the boiler feed water for the large lignite-fired power plant Lippendorf near Leipzig in the Federal State of Saxony. The membrane elements of the Lewabrane RO B400 FR type used there are characterized by long service life, good permeate yield and salt retention along with low energy consumption. In addition, uncharged organic impurities are removed to a great extent, so that the TOC (Total Organic Carbon) value of up to 700 ppm in the raw water from an adjacent lake can be reduced to well below 0.01 percent. Typically, TOC values of about 20 ppb are achieved in the RO permeate, which is far below the VGB/EU standard or the recommendation of the U.S. Electric Power Research Institute of less than 100 ppb. The RO system produces up to 1,200 cubic meters of water per day for the water-steam cycle.

Also in Lippendorf, ion exchange resins from LANXESS’s Lewatit product range have been used to treat boiler feed water before and after reverse osmosis for around 15 years. Separate cation or anion exchangers are used in the demineralization stage, while fine cleaning after reverse osmosis is carried out with a mixed-bed exchanger. At the end of the treatment process, the conductivity of the boiler feed water is below 0.06 μS/cm.

Reliable design on a practical data basis
At the VGB conference, Uli Dölchow, application engineer at IAB Ionenaustauscher GmbH Bitterfeld in the LPT business unit of LANXESS, will give a lecture on October 26, 2017 entitled “Performance evaluation of RO membranes using statistical Design of Experiment (DoE) and a silica containing multi-ion mixed feed”. He explained how modern methods of statistical experimental design in the laboratory can be used to capture the behavior of membrane elements very realistically. Raw water test mixtures are used for this purpose, containing not only common salt but also other ions such as silicate, borate, nitrate and/or ammonia in order to reproduce typical operating conditions realistically. The membrane behavior can then be reliably predicted over a wide pH and temperature range. This enables a design that is precisely adapted to the respective application. “A system tailored to the requirements helps to reduce investment costs. In addition, rapid commissioning is possible without time-consuming readjustment. We can offer the power plant operator exactly the solution he needs,” explained Dölchow.

All the results of these laboratory tests are incorporated into the LewaPlus design software developed by LANXESS, which is constantly updated. This makes it an ideal tool, especially for the design of combined reverse osmosis/ion exchange systems for water treatment.

LANXESS offers a comprehensive range of specially tailored ion exchange resins and membrane elements for the above-mentioned and other applications. Detailed information is available on the website

Justice Department Files Antitrust Lawsuit Against Parker-Hannifin Regarding the Company’s Acquisition of CLARCOR’s Aviation Fuel Filtration Business

Lawsuit Seeks to Restore Competition in Markets for Aviation Fuel Filtration Products

The Department of Justice filed a civil antitrust lawsuit today against Parker-Hannifin Corporation, challenging its acquisition of CLARCOR Inc.  The department said that the $4.3 billion transaction substantially lessened competition in markets for aviation fuel filtration products in the United States, which threatens to result in higher prices, less innovation, and less favorable terms of service.

The department’s lawsuit seeks to restore the competition that this transaction eliminated by asking the U.S. District Court for the District of Delaware to order Parker-Hannifin to divest an aviation fuel filtration business sufficient to replace CLARCOR’s competitive significance in the marketplace.

“Parker-Hannifin bought CLARCOR knowing that this transaction raised serious antitrust concerns under Section 7 of the Clayton Act in the development, manufacture and sale of aviation fuel filtration products,” said Deputy Assistant Attorney General Donald Kempf of the Department of Justice’s Antitrust Division.  “The Division is committed to vigorous and sound enforcement of the antitrust laws, and will do its job to protect American customers regardless of whether a merger has already been consummated,” he added.

“Parker-Hannifin’s acquisition of its only U.S. rival for these types of aviation fuel filtration products has effectively created a monopoly in these critical safety products, depriving their customers of the benefits of competition,” said Acting Assistant Attorney General Andrew Finch of the Department of Justice’s Antitrust Division.

Aviation fuel must be filtered properly to remove particulate contaminants and water droplets before such fuel is delivered into commercial or military aircraft.  The failure to filter aviation fuel properly can result in engine failure, with potentially catastrophic consequences.  To protect public safety, the U.S. airline industry mandates the use of aviation fuel filtration systems and filtration elements that have been subjected to rigorous testing and qualification requirements.  Only those aviation fuel filtration products qualified by the Energy Institute (EI) may be used to filter aviation fuel for use in U.S. commercial and military planes.

According to the department’s complaint, Parker-Hannifin and CLARCOR were the only two manufacturers of EI-qualified aviation fuel filtration systems and filter elements in the United States and were engaged in vigorous head-to-head competition.  That competition enabled customers to negotiate better pricing and to receive more innovative products and better terms of service.  The transaction eliminated this competition.

During the pendency of the department’s investigation, Parker-Hannifin failed to provide significant document or data productions in response to the department’s requests.  In addition, the company has not agreed to enter into a satisfactory agreement to hold separate the fuel filtration businesses at issue and to maintain their independent viability pending the outcome of the investigation and, now, this litigation.

Parker-Hannifin Corporation is an Ohio corporation headquartered in Cleveland, Ohio.  It is a diversified manufacturer of filtration systems, and motion and control technologies for the mobile, industrial and aerospace markets with operations worldwide.  In 2016, Parker-Hannifin’s sales revenues were approximately $11.4 billion.  Parker-Hannifin sells its aviation fuel filtration products under the Velcon brand.

CLARCOR Inc. was a Delaware corporation headquartered in Franklin, Tennessee.  CLARCOR was a leading provider of filtration systems for diversified industrial markets with net sales of approximately $1.6 billion in 2016.  CLARCOR manufactured and sold aviation fuel filtration products under the PECOFacet brand.

INDA Expects Strong Booth Traffic for Exhibitors Oct. 10-12 in Chicago

Preview the Newest Innovations Coming to Filtration 2017 on the INDA Event Website

With the Filtration® 2017 International Conference & Exposition less than a month away, engineers, product developers and business managers can now preview many of the product introductions and innovations that will be introduced Oct. 11-12 in Chicago on the INDA website for the event.

The “Product Preview” feature on the Filtration 2017 site includes new products that some of the 140-plus exhibitors will showcase at this year’s event at Chicago’s Navy Pier. Excitement is mounting for Filtration 2017 and INDA is expecting a strong turnout of about 1,500 industry participants with a new earlier date and continued growth in the filtration segment.

Among the innovations that will be launched in air and liquid filtration are filter pockets that help lower energy consumption, multi-layer filters from new synthetic materials, filter assembly systems engineered for extreme duty performance, and new intelligent equipment that makes pleats in heavy duty materials.

Product Previews

A sample of the exhibitor innovations that participants will see on the show floor at Filtration 2017 include:

  • Allied Group (Booth 625): A new line of 100 percent glass coalescing filters for the compressed air and gas industries made using the vacuumed formed (cast) process
  • Bdtronic (Booth 814): A new atmospheric pressure plasma device to optimize the surface tension on a wide variety of materials in standard and high-performance applications
  • Bondex (Booth 624): A new technology for the industrial filtration market that combines the benefits of needle loom fiber entangling with hydro-entangling technology to deliver industry leading dust collection performance
  • Franklin Adhesives & Polymers (Booth 612): A new efficient filter adhesive that is a self-foaming, two-part polyurethane potting compound supplying high strength without requiring special water, air or nitrogen injection equipment
  • Raleigh Precision Products (Booth 426):  The new 2V Filter Assembly System is a unique four-piece construction engineered to securely hold filter media packs
  • Truetzschler Nonwovens (Booth 115):  A new line including a drum dryer/oven as well as a foulard, a can dryer and a hot flue unit
  • TSI Inc. (Booth 817): New model 8130A Automated Filter Tester for the testing of particulate respirator filters, disposable filtering face pieces and a wide assortment of filter media
  • TTG Inc. (Booth 305): New “Ultima” product line of HD membranes in power and cement applications that do not contaminate under high-peak use

Conference Highlights

In addition to the many business opportunities to generate sales and leads at the exhibition, Filtration 2017 will feature a powerful educational component to learn from world-renowned expert speakers.

Top must-attend sessions include the keynote lunch on recent growth activity in filtration by Phil Whitaker, President and CEO, AAF Flanders; a panel on the Industrial Internet of Things (IIoT) in Filtration; a panel discussion on the ISO 16890 standards; as well as sessions on air purification, media design and measuring air filter energy efficiency.

Filtration 2017 kicks off on Oct. 10 with the one-day acclaimed Nonwoven Filter Media Training Course prior to the exposition on Oct. 11-12. The industry reception will be Oct. 11, from 5 to 6 p.m., on the show floor.

Online registration for Filtration 2017 is open at

About INDA

INDA, the Association of the Nonwoven Fabrics Industry, serves hundreds of member companies in the nonwovens/engineered fabrics industry in global commerce. Since 1968, INDA events have helped members connect, learn, innovate, and develop their businesses. INDA educational courses, market data, test methods, consultancy, and issue advocacy help members succeed by providing them the information they need to better plan and execute their business strategies.

For more information, visit or call +1-919-459-3700.