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Scientists, Engineers See Green Side of LANXESS
Thursday June 29, 12:23 pm ET

Innovations in Insect Repellant and Arsenic Removal Part of ACS Green Chemistry and Engineering Conference

WASHINGTON, June 29 /PRNewswire/ -- Two innovations from LANXESS -- new chemistries to ward off disease-carrying summer insects and remove arsenic from drinking water -- were described for participants at the 10th Annual Green Chemistry and Engineering Conference of the American Chemical Society in Washington this week.

One innovation, BAYREPEL®(1), is an insect repellent that offers a safe, effective, and environmentally friendly alternative to products containing DEET (diethyl-m-toluamide.) BAYREPEL®, known generically as picaridin, avoids the unpleasant odor and stickiness that can deter people from using insect repellants to protect their health.

"At a time when West Nile Virus is on the rise, and there remain concerns about Lyme disease and other insect-borne illnesses, it is critical to find an insect repellant that consumers feel comfortable using," said Frank Lueckgen, head of the fine and basic chemicals business units of LANXESS. "BAYREPEL® is safe for the whole family, is effective against mosquitoes, ticks, sandflies, and horseflies, and has almost no scent to humans."

In testing, neither groundwater nor tap water contained residues of picaridin or picaridin acid, indicating the complete degradation and removal of the substances by sewage treatment plants and groundwater conditioning systems.

In a separate presentation, ACS conference participants also learned about BAYOXIDE®(2) E33 arsenic removal media, utilized by Severn Trent Systems, Inc. in its SORB 33® arsenic removal technology program. The LANXESS product and Severn Trent system have proven to be very effective at removing naturally occurring arsenic from groundwater.

The U.S. Environmental Protection Agency revised standards for arsenic levels in drinking water. The SORB 33® arsenic removal technology with Bayoxide® E33 media is being used in 35 states, including both municipal and residential applications, to provide clean drinking water. The technology was selected for use at eight demonstration sites in Phase II of the EPA National Arsenic Treatment Demonstration Project.

"Adsorption technology is among the simplest approaches for treating metals in water," said Robert Trozenski, head of the LANXESS business unit that markets Bayoxide® E33. "Traditional adsorbents, such as activated carbon or activated alumina, have limited capacity for arsenic. Bayoxide® E33 media consists of nanoparticulate iron oxide hydroxide and has a very high absorption capacity for arsenic."


LANXESS Corporation was formed when the Bayer Group combined most of its chemical businesses and large segments of its polymer activities. The company began operating as a legal entity in the United States on July 1, 2004. LANXESS Corporation is a member of the German LANXESS-Group that was spun-off from Bayer in January 2005.

The LANXESS-Group manufactures high-quality products in the areas of chemicals, synthetic rubber and plastics. The companies' portfolio comprises basic and fine chemicals, color pigments, plastics, synthetic rubber and rubber chemicals, leather, textile processing chemicals, material protection products and water treatment products.

In 2005, LANXESS Corporation employed about 1,900 persons in the United States.


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