LANXESS worldwide

Corporate Website en | de


  • Australia en

  • China cn | en

  • India en

  • Indonesia en

  • Japan jp

  • Korea kr

  • Malaysia en

  • Pakistan en

  • Philippines en

  • Singapore

  • Thailand en

  • Vietnam en


  • Austria en

  • Belgium nl

  • Czech en

  • France fr

  • Hungary en

  • Italy en

  • Netherlands en

  • Poland en

  • Russia en

  • Serbia en

  • Slovakia en

  • Spain en

  • Turkey en

  • United Arab Emirates en

  • United Kingdom en



LANXESS Canada Contacts

Contact our Sites in Canada


Media Inquiries

Global Press Releases


LANXESS expands Lewabrane range for water treatment

New membrane elements for reverse osmosis

Specialty chemicals company LANXESS AG is offering five new types of Lewabrane membrane separation elements for reverse osmosis. With immediate effect HR (high rejection) types with membrane surface areas of 370 and 440 square feet and HF (high flow) types with membrane surface areas of 370, 400 and 440 square feet are available.

Says Alan Sharpe, head of the RO Membrane Strategic Project in LANXESS's Ion Exchange Resins business unit: “Our HR type elements are designed to provide extremely low salt passage in normal operation, with more than 99.7 percent salt rejection measured under standard conditions. The high rejection for critical ions like silica is also remarkable.” According to Sharpe, the HF types score well in terms of the high water productivity.  

The Lewabrane RO product types consist of spiral-wound polyamide composite membranes and are specially designed for treating water in industrial applications. Fields of application include the desalination of brackish and low-salinity waters, groundwater remediation and the production of boiler feed water required in power stations. The RO technology also facilitates demineralization by particle removal in microchip manufacture.

Product portfolio for reverse osmosis

The elements in the Lewabrane RO product family have a standard length of 40 inches (1,016 mm) and a diameter of either eight inches (201 mm) or four inches (101 mm).

Lewabrane B090 HF 4040, the membrane element with a diameter of four inches, has a unique ATD design. Thanks to an innovative structure with anti-telescopic devices at the ends of the elements, the surface area of the membranes exceeds that of other commercially available elements by almost 6 percent. The bigger surface area results in higher water productivity. The superior permeate flow rate is 9.4 cubic meters per day on average under standard conditions, with a salt rejection of 99.5 percent.

“The combination of membrane filtration and ion exchange ensures that efficiency and economy can go hand in hand in industrial applications,” says Sharpe. Since the group offers both technologies, such process combinations are particularly attractive. “Our tried and tested Lewatit ion exchange resins and the new Lewabrane membrane elements can provide good cost performance, for example in the preparation of feed water for downstream EDI applications,” adds Sharpe. The membrane elements provide a stable lower-salinity permeate to minimize the load in downstream ion exchange and electrodeionization (EDI) operations, thus improving the cost-performance ratio.

The detailed descriptions of Lewabrane RO elements can be found online at

LANXESS is a leading specialty chemicals company with sales of EUR 8.8 billion in 2011 and currently around 16,800 employees in 30 countries. The company is at present represented at 49 production sites worldwide. The core business of LANXESS is the development, manufacturing and marketing of plastics, rubber, intermediates and specialty chemicals. LANXESS is a member of the leading sustainable indices Dow Jones Sustainability Index (DJSI) World and FTSE4Good.


Ilona Kawan

Ilona Kawan
Spokesperson Trade and Technical Press

Phone: +49 221 8885 1684

Fax: +49 221 8885 4865

send E-Mail


  • Gallery