Lewatit® FO 36
Lewatit® FO 36 is a macroporous, monodispersed, weakly basic, polystyrene-based ion exchange resin for the selective adsorption of oxoanions, such as arsenate or arsenite ions. It is doped with a nano-scale film of iron oxide covering the inner surfaces of the pores of the polymer bead. Target oxoanions are bonded by a specific, reversible reaction involving hydroxy-groups on the iron oxide surface.
Lewatit® FO 36 is especially suitable for use in the following applications:
In the purification of potable water arsenic can be removed down to rest concentrations significantly lower than 10 µ g/l which is the maximum contaminant level set in several countries. Lewatit® FO 36 is also capable of adsorbing other species such as HPO 4 2-, HSbO4 2-, SCN- etc.
Business Unit
Liquid Purification Technologies
Properties and benefits
- Arsenic removal from drinking water
- Arsenic removal from ground water (ground water remediation)
- Arsenic removal from process solutions even in presence of high contents of neutral salts .
Areas of Applications
- Potable Water Treatment
- Industrial Water Treatment
- Waste Water Treatment
How to use the product
When using Lewatit® FO 36 to treat potable water, special care should be paid at the onset. Please refer to the recommended start-up-conditions contained in this data sheet.
After pre-treatment as per instructions, Lewatit® FO 36 is in compliance with the European Resolution ResAP (2004)3
Synonyms
Ion Exchange Resin
2011-09-16
Ion Exchange Resins business unit (ION)
The Ion Exchange Resins business unit of specialty chemicals group LANXESS AG is one of the world's leading producers of ion exchange resins, adsorbers and functional polymers. For more than 70 years, the brand name Lewatit has been synonymous with premium products that have become successfully established in more than 500 applications. More than 20 percent of sales are achieved with products that are less than three years old.
Ion exchange resins are used to remove dissolved components from liquids. The first step in the process is to apply functional groups to small polymer beads. Placed in the liquid, these functionalized polymers adsorb specific anions or cations, and release others in exchange. Water treatment is the best-known and biggest field of application for ion exchange resins. In the households, such products are used among other applications to soften water. They ensure that the calcium ions responsible for water hardness are replaced by "soft" sodium ions.
High-performance ion exchange resins are also used in industry, for example in power plants. There, Lewatit is used in the production of high-purity water and steam in order to avoid incrustations and corrosion. This improves the efficiency, operating reliability, service life and safety of power plants.
For cleaning of industrial effluent and for treatment of groundwater, the removal of toxic ionic and non-ionic substances plays a key role. LANXESS has a range of special Lewatit resins that, thanks to their excellent selectivity, are able to remove, for example, heavy metal ions and organic pollutants from (waste)water and industrial effluent. Contaminants collect on ion exchange resins and adsorbers, and, in this way, can be reliably removed from water. This ensures that only contaminant-free water is discharged into the environment.
A further field of application for ion exchange resins is in hydrometallurgy, where they are used in the treatment of metals such as gold, copper, nickel and cobalt in solution. Special grades have been developed to isolate these metals and clean the water.
Ion exchange resins are also a well established and indispensable part of the food industry. The production of crystal sugar and liquid sugar syrup, for example, would be almost inconceivable without them. The resins allow the brown cane sugar to be turned into the popular white product – and also make sure that sugar tastes like sugar.
Other areas of application for LANXESS ion exchange resins include the beverage industry, catalysis in the chemical and petrochemical industries, semi-conductor production, metalworking, pharmaceutics and heterogeneous catalysis.
The Ion Exchange Resins business unit has also made a name for itself as a developer of innovative plant engineering – for example, modern countercurrent processes that have become the standard in industrial water treatment. In addition, LANXESS moved into membrane filtration technology. The company built a new production plant at its site in Bitterfeld where it manufactures membranes for reverse osmosis for water treatment. The membranes’ chemical composition and structure make it possible to filter out substances such as nitrates, pesticides, herbicides, viruses, bacteria and the smallest particles. These products are sold under the brand Lewabrane.
The ION business unit is part of the LANXESS Performance Chemicals segment, which posted sales in fiscal 2010 of EUR 1,97 million. It is headed by Jean-Marc Vesselle.
Key brands
Lewatit and Ionac: Under these brands, LANXESS markets a wide range of ion exchange resins with many different fields of application. Monodisperse ion exchange resins, for example, have resin beads with particularly narrow size distribution and, compared with heterodisperse products, bring significantly improved efficiency.The new products of the membrane filtration technology are sold under the roof of the new Lewabrane brand.
Production sites:
Leverkusen, Bitterfeld (both Germany) and Jhagadia, India.
For more detailed information go to: http://www.lewatit.com
LANXESS is a leading specialty chemicals company with sales of EUR 7.1 billion in 2010 and currently around 15,800 employees in 30 countries. The company is at present represented at 46 production sites worldwide. The core business of LANXESS is the development, manufacturing and marketing of plastics, rubber, intermediates and specialty chemicals.
