Ion exchanger

New perspectives for water treatment

Ion exchangers are one of the most important tools for the treatment of aqueous solutions. Ever-increasing demands on the quality of water to be treated require ever more powerful ion exchangers and more efficient water treatment technologies. For 30 years BAYER/LANXESS has played a leading role in this regard.

The offering:
Powerful ion exchangers in combination with BAYER counterflow technologies such as fluidised-bed, lift-bed, rinse-bed and multistep.

Brief information

Product group
Ion exchanger

Product name
LEWATIT

Manufacturer
LANXESS Deutschland GmbH, Leverkusen

The most established LEWATIT ion exchange types and their application examples

LEWATIT MonoPlus S108 / SP112

Softening

  • Boiler feed water
  • Condensate
  • Household
    • (dishwasher, washing machine)
  • Laundries
  • Textile industry
  • Sea water
  • Drinking water
  • Sugar solutions
  • Aquarium water
  • Fruit juice industry

Desalination

  • Boiler feed water
  • Condensate
  • Electroplating
    • (rinse water and circulation water)
  • Sugar solution
  • Glycerine 
  • Gelatine 
  • Whey
  • Hydrogen peroxide
  • Aquarium water
  • Alcohol

Special applications

  • Adipic acid production
  • Recovery of reusable materials
  • Separation of rare earths
  • Pickling bath deferrisation
  • Ammonium nitrate recovery
  • Amino acid separation
  • Nitrate removal from water
  • Recovery of reusable materials
    • (chromium, molybdenum, copper, gold)
  • Cleaning of glacial acetic acid
  • Iron removal from concentrated hydrochloric acid
  • Uranium extraction
  • Decolouration of sugar juice

LEWATIT CNP 80 / S 8528

Decarbonisation

  • Cooling water
  • Boiler feed water
  • Household water softener
  • Humidifier
  • Drinking water (coffee)
  • Irrigation water
  • Brewing water

Special application

  • Cleaning and isolation of natural substances
  • Selective exchanger (copper, nickel, cadmium, cobalt, zinc)
  • Amino acid separation
  • Extraction of antibiotics
  • Wastewater, neutralisation of brewing water
  • Removal of ammonia from condensates
  • NaOH removal from alcohols

LEWATIT MonoPlus M 500 / M 800 / M 600; MonoPlus MP 500; MonoPlus MP 600

Desalination

In combination with cation exchangers
(refer to LEWATIT MonoPlus S 108 and MonoPlus SP 112)

Special applications

  • Nitrate removal from water
  • Recovery of reusable materials (chromium, molybdenum, gold)
  • Cleaning of glacial acetic acid
  • Iron removal from concentrated hydrochloric acid
  • Decolouration of sugar juice
  • Uranium extraction

LEWATIT MonoPlus MP 62 / VPOC 1072; MonoPlus MP 64

Desalination of aqueous solutions

In combination with MonoPlus S 108 / MonoPlus SP 112 depending
on the composition of the solution

Special applications

  • Formic acid removal from formalin
  • Deacidification of fruit juices
  • Lactic acid removal from whey
  • Metal recovery (molybdenum, tungsten)
  • Cleaning of pharmaceuticals
  • Acid removal from wine

The main applications of ion exchange and their resin combination and application examples

Desalination / complete desalination

Purpose

Removal of salts from aqueous and non-aqueous solutions for applications where totally ion-free water or product is needed.

Resin / Resin combination

depending on the water or
composition of the solution and its requirement

a) Desalination without SiO2 and CO2 removal

  • MonoPlus S 108 or SP 112
  • MP 62 / MonoPlus MP 64 / VP OC 1072


b) Desalination with CO2 + SiO2 removal

  • MonoPlus S 108 / SP 112
  • MonoPlus M 500 /M 600 /MP 500 /MP 600
  • OC 1071 / VP OC 1072 / VP OC 1073
  • Adsorber (VP OC 1074)


c) Fine cleaning in mixed bed

  • MonoPlus S 108/H / SP 112/ S 200 KR
  • MonoPlus M 800 / MP 500
 
Application examples 
  • Feed water for high-pressure boiler
  • Process water for chemical industry
  • Paper (fine and electrically highly penetration-resistant papers)
  • Air-conditioners
  • Photo industry (production of emulsions and washing of films)
  • Semiconductor manufacturing
  • Electroplating
 

 

Softening

Purpose

Removal of all hardness constituents calcium and magnesium
Production of “soft” water for applications in which for example the formation of insoluble or poorly soluble Ca-/Mg compounds should be avoided.

Resin / resin combination

 
  • MonoPlus S 108, SP 112

at additional decarbonisation:

  • CNP 80 - S 108
  • CNP 80 - SP 112
 

Application examples

Water for:

  • Steam generators
  • Laundries
  • Textile industry
  • Household (washing machine, dishwasher)
  • Beverage industry
  • Drinking water
 

 

Decarbonisation

Purpose

Removal of carbonate hardness, prevention of hard calcium carbonate precipitations, especially in tempered pipe and tank walls

Resin / resin combination

CNP 80, S 8528, S8227

Application examples

 
  • Cooling water
  • Heating installations
  • Low pressure steam generator
  • Humidifier
  • Brewing and drinking water
 

 

Condensate purification

Resin / resin combination

 
  • MonoPlus SP 112 / MP 500
  • MonoPlus S 108 / M 500 / M 800
 

 

Complete desalination by reverse osmosis

Resin / resin combination

 
  • MonoPlus S 108
  • MonoPlus M 500 / M 600 / MP 500
  • MonoPlus MP 600
 

 

List of most commonly used types of LEWATIT ion exchangers with qualities and form of delivery

Cation exchanger

strongly acidic, gel type

Description

  • MonoPlus S108
  • MonoPlus S108
  • MonoPlus S100 G1
  • Lewatit S 100 KR-H/CL-frei
  • MonoPlus S 200 KR/H
  • MonoPlus S 1667
  • MonoPlus S 1668 

Form of delivery

  • H
  • Na
  • Na
  • H
  • H
  • Na
  • Na

strongly acidic, macroporous

slightly acidic, macroporous

 

  • Lewatit CNP 80
  • Lewatit CNP 80 WS
  • Lewatit S 8227
  • Lewatit S 8528
  • H
  • H
  • H

Anion exchanger

strongly alkaline, gel type

Description

  • MonoPlus M 500
  • MonoPlus M 600
  • MonoPlus M 800
  • MonoPlus M 500 KR/OH CL-free
  • MonoPlus M 800 KR/OH CL-free

Form of delivery

  • CL
  • CL
  • CL
  • OH
  • OH

strongly basic, macroporous

  • MonoPlus 500
  • MonoPlus 800
  • MonoPlus 600
  • CL
  • CL
  • CL

 

weak / mixed alkaline

  • MonoPlus MP 64 / MP 68
  • Lewatit MP 62
  • Lewatit MP 62 WS 
  • FB/CL
  • FB
  • FB

Selective exchanger

Description

  • Lewatit TP 207
  • Lewatit TP 208
  • Lewatit TP 214
  • Lewatit TP 260

Form of delivery

  • Di-Na
  • Di-Na
  • FB
  • NA

Mixtures

Description

  • Lewatit SM 600 KR CL frei
  • Lewatit SM 1000 KR CL frei
  • IONAC NM 91
  • IONAC NM 60

Form of delivery

  • H/OH
  • H/OH

 

Acrylic exchanger

 

Description

  • Lewatit VPOC 1071
  • Lewatit VPOC 1072
  • Lewatit VPOC 1073
  • Lewatit VPOC 1074

Form of delivery

  • CL
  • FB
  • FB/CL

Inert resin

Description

  • Lewatit IN 42
  • Lewatit IN 50

Form of delivery

  • CL
  • FB
  • FB/CL

LEWATIT MONOPLUS, the monodisperse ion exchangers from LANXESS

Advantages for the treatment of solutions

The uniform diameter of Lewatit monodisperse beads ensures an absolutely uniform structure of the resin bed in the filter column.

This means:

  • Easy backwashing
  • Even flow rate
  • Low pressure loss
  • Large layer heights
  • Higher speeds
  • No blocking of nozzles by fine grain
  • High mechanical and osmotic stability
  • Optimal grain size for the intended purpose
  • Same diffusion paths in all beads
  • Lower ion slippage


As a result:

  • Increased system capacity
  • High decolouration capacity
  • Effective regeneration
  • High selectivity in chromatography
  • High concentration of the eluted products
  • Advantages for catalysis
 

Advantages for water treatment

In addition to the various advantages for the treatment of solutions further benefits add up such as:

  • Less backwash space
  • Lower wash water consumption
  • Complete separability in the mixed bed


As a result:

  • Excellent water quality
  • High capacity utilisation
  • Optimal container sizing
  • Less process water demand
  • Lower energy needs of pumps
  • Low backwash losses
  • Easy operation of system
 

Contact Person

Thomas Blank

Sales of Specialty Chemicals

+49 (0) 2751-524-134E-Mail-Kontakt

Your contact for

  • Activated carbons
  • Ion exchangers (Lewatit)

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