Lanxess LEWATIT® MDS TP 260 Cation Exchange Resin

Login to see your most recently viewed materials here. Or if you don't have an account with us yet, then click here to register.

Lanxess LEWATIT® MDS TP 260 Cation Exchange Resin
Categories:	Polymer; Thermoset
Material Notes:	Lewatit® MDS TP 260 is a weakly acidic, macroporous cation exchange resin with chelating amino methyl phosphonic acid groups for the selective removal of transition heavy metals and alkaline earth cations. The monodisperse beads are mechanically and osmotically superior stable. Lewatit MDS TP 260 is produced with significantly smaller beads then eh regular Lewatit MonoPlus TP 260 and therefore performs with strongly increased kinetics. Depending on the operating conditions 50-100% higher operating capacity can be realized under equal chemical consumption in regeneration and conditioning. Divalent cations are removed from neutralized waters in the following order: Uranium > Lead > Copper > Zinc > Nickel > Cadmium > Cobalt > Magnesium > Strontium > Barium >>> Sodium. Adsorption of trivalent cations takes place, but desorption may be difficult. For instance iron(III) can only be desorbed by uneconomically high amounts of specific acid dosage. Due to the smaller beads Lewatit MDS TP 260 beds will deliver higher pressure drops over a resin bed than standard products. This has to be considered in an adequate pump design. Also it has to be considered, that the resin bed is more sensitive against plugging by suspended particles. Therefore a suitable prefilltration of the feed stream (e.g by use of sand filters or filter candles) has to be provided. It is e.g. suitable for use in secondary purification of brine feed to chloralkali membrane cells (traces of alkaline earth ions are removed after their normal precipitation by carbonates in the pH range 7-11) at absence of iron (III) ions and in case of low demand on Sr and Ba removal. In brine purification the operating capacity of Lewatit MDS TP 260 depends on the pH-value of the brine. At pH 10 it is approx. threefold that achieved at pH 8. At pH 10 and calcium content of 5 ppm, a capacity up to 26g Ca per liter of Lewatit MDS TP 260 (related on the resin in the di-sodium-form) is obtained. At a service flow rate of 20-30 BV/h, the residual calcium values are well below 10 ppb. Greater security can be achieved by operating two units of equal size in series. Lewatit MDS TP 260 has to be conditioned with caustic soda solution after every regeneration cycle/before every exhaustion cycle. After the conditioning it is in the di-sodium-form and can be used for the next cycle in the final polishing of chloralkali brine feed. Information provided by Lanxess.
Vendors:

Available Properties
Bulk Density Density Bead Size, Mean Storage Temperature Maximum Service Temperature, Air Shelf Life

Property Data

This page displays only the text
of a material data sheet.

To see MatWeb's complete data
sheet for this material (including
material property data, metal
compositions, material suppliers,
etc), please click the button below.

Manufacturer Notes:
Lanxess, Spinoff of Bayer

Category Notes
Plastic

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

	Advertise with MatWeb!
	Data sheets for over 180,000 metals, plastics, ceramics, and composites.
	HOME • SEARCH • TOOLS • SUPPLIERS • FOLDERS • ABOUT US • FAQ • LOG IN

System Message