KDF-85 Spheres

What Does KDF-85 Adsorb?

Comprehensive Contaminant Removal

• Eliminates chlorine, pesticides, and organic compounds

• Removes rust, unpleasant tastes, and odors

• Effectively reduces soluble heavy metals 

• Pb²⁺ – Lead ion (divalent lead, commonly from plumbing corrosion)

  • Mechanism: Reduced to Pb⁰ (elemental lead) and trapped in the media.

  • Relevance: Critical for drinking water safety (prevents neurotoxicity).

• Cd²⁺ – Cadmium ion (toxic heavy metal, often industrial discharge)

  • Mechanism: Forms Cd(OH)₂ (cadmium hydroxide) and adsorbs onto the media.

  • Relevance: Removes carcinogenic industrial pollutants.

• Cr⁶⁺ – Hexavalent chromium ion (carcinogenic, from industrial waste)

  • Mechanism: Reduced to Cr³⁺ (less toxic trivalent chromium), then filtered.

  • Relevance: Addresses cancer risks from industrial wastewater.

• As³⁺ – Arsenite ion (trivalent arsenic, more toxic than As⁵⁺)

  • Mechanism: Oxidized to As⁵⁺ (arsenate), then co-precipitates with iron or other metals.

  • Relevance: More effective when combined with iron-enhanced filtration.

• Hg²⁺ – Mercuric ion (divalent mercury, highly toxic)

  • Mechanism: Reduced to Hg⁰ (elemental mercury) and immobilized.

  • Relevance: Prevents bioaccumulation in aquatic life.

• Mn²⁺ – Manganese ion (causes staining and metallic taste)

  • Mechanism: Oxidized to MnO₂ (manganese dioxide) and filtered out.

  • Relevance: Eliminates staining and "black water" issues.

• Ni²⁺ – Nickel ion (allergenic, from industrial runoff)

  • Mechanism: Forms Ni(OH)₂ (nickel hydroxide) and adsorbs.

  • Relevance: Reduces allergenic and carcinogenic risks.

• Al³⁺ – Aluminum ion (linked to turbidity and pipe corrosion)

  • Mechanism: Precipitates as Al(OH)₃ (aluminum hydroxide).

  • Relevance: Reduces turbidity and pipe scaling.

• Fe³⁺ – Ferric ion (trivalent iron, causes rust-colored water)

  • Mechanism: Reduced to Fe²⁺, then re-oxidized to Fe(OH)₃ (ferric hydroxide) for filtration.

  • Relevance: Prevents "red water" and pipe clogging.

• Targets hydrogen sulfide and calcium deposits

Microbial Control

• Inhibits algae and fungal growth

• Helps control bacterial proliferation

System Optimization

• Ideal as a pre-filter for reverse osmosis, deionization, and ion exchange systems

• Extends the lifespan of subsequent filtration stages by reducing contaminant load