Ion Exchange Media

WTZ 100

WTZ 100 is characterized by its high surface area, high cation exchange capacity (CEC) and physical durability. Its chemical composition, high CEC, and abrasion resistance make it an ideal water filtration media, and its pozzolanic properties prove highly valuable in cementitious products. WTZ 100’s unique chemical and physical properties also allow for gas adsorption and water absorption/desorption, making it ideal for multiple industrial and environmental end-use applications, including radioactive waste control, aquaculture, water filtration and purification.

Typical Properties
FormGranules & Powders
ColorReddish / Tan (dry brightness 40)
Ring Members8
Crystal SizeLess than 1 micron
Crystallinity+90 %
Density1.73 g/cm³
Pore Size4.1 by 3.7 Angstroms
Effective Pore Diameter4.3 Angstroms
Cavity Size11.0 by 6.6 Angstroms
Total Pore Volume.468 cm³/g
Surface Area520 m²/g
Crystal Void Volume.47 cm³/cm³
Packing DensityApprox. (40 - 44 lbs/ft³)
SiO₂/Al₂O₃ RatioApprox. 4:1
MOH's Hardness4 - 5
Moisture as PackagedLess than 20% by Weight
pH of 1% Dispersion8.5
StabilitypH of 3 through 12
Ion Exchange Capacity2.50 meq/g
Sorption Capacity>15 wt. % H₂O
Typical Chemical Analysis (Anhydrous Basis)
SiO₂Al₂O₃Fe₂O₃CaOMgONa₂OK₂ODominant Cation
Exchange Selectivities
Exchange of Heavy Metal Ions
Weight Percent of Heavy Metals Retained in Anhydrous CABSORB after Ion Exchange from a .10 mg/ml solution: AgNO₃, Pb(NO₃)₂, CoSO₄ and a 0.025 mg/ml solution CuSO₄ at the Initial pH indicated for each Solution.

WTZ 200

WTZ 200 is unique among natural zeolites. It is characterized by its light weight, extremely high surface area, and high cation exchange capacity (CEC). Its chemical composition and affinity for radionuclides make it a proven and highly effective media for nuclear remediation applications, and its high surface area is valued in gas separation and specialty desiccant markets. End-use applications of WTZ 200 include hazardous waste cleanup of arsenic and thallium, radioactive waste control, personal hygiene products, and air and water filtration and purification.

Typical Properties
FormGranules & Powders
ColorTan - Green
Pore Diameter4.0 Angstroms
Pore Volume15%
Specific Surface Area40 m²/g
Bulk45 - 80 lbs/ft³
760 - 1,283 kg/m³
Solid Density100 lbs/ft³
1,603 kg/m³
Alkali StabilitypH of 7 - 10
Acid StabilitypH of 3 - 7
Thermal Stability1,202 °F
650 °C
Ion Exchange Capacity1.85 milliequivalents/g
Typical Chemical Analysis
Major Exchangeable Cations

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