FERROLOX-XG

FERROLOX-XG® is a Carbon-based Metal-Organic-Framework (MOF) adsorber designed by Watch Water GmbH, Germany for the removal of toxic and corrosive gases such as Hydrogen Sulfide (H₂S) and Carbon Dioxide (CO₂) from gas streams. It combines iron hydroxide [Fe(OH)₃] and carbon within a porous MOF lattice, giving it extraordinary selectivity, surface area, and regenerability.

Traditional gas purification materials (e.g., iron sponge, activated carbon) are non-regenerable, produce hazardous waste, and have low sulfur retention. FERROLOX-XG® overcomes these limitations by offering:

• Hybrid MOF design – carbon core + iron shell for dual adsorption & catalytic oxidation
• Extremely high surface area (~ 1,800–2,000 m²/g)
• Self-renewing capability via OXYDES-XG (solid-oxygen regeneration)
• Multi-gas adsorption (H₂S, CO₂, CO, SOₓ, NOₓ, NH₃, VOCs)
• No liquid bubbling or waste effluent

The MOF structure is a Lignin-based Organic Polymer (LOP) with extremely high porosity. Iron(III) ions are anchored on the carbon framework, forming an active ferric-oxide network that reacts with both organic and inorganic gas molecules. This gives FERROLOX-XG® its unique ability to adsorb, oxidize, and be regenerated repeatedly.

• Natural-gas and biogas upgrading
• Refineries and petrochemical plants
• Oil & gas production and storage facilities
• Landfills and waste-gas treatment systems
• Industrial air scrubbers and odor control units
• Environmental cleanup of toxic and VOC-laden air

Conventional air bubbling does not effectively regenerate MOFs due to bio-film formation. OXYDES-XG® is a proprietary solid-oxygen granular material that delivers oxygen by diffusion directly onto the adsorber surface — no bubbling needed. It:

• Restores adsorption capacity within minutes
• Oxidizes toxic gases and organics into CO₂ and H₂O
• Prevents biofouling and surface clogging
• Eliminates disposal of non-regenerable adsorbers

Result: a continuous, self-sustaining, “green-chemistry” regeneration process.

• Maintain minimum 40 % humidity for optimal reaction.
• Avoid sudden oxygen injection in partially regenerated beds – sulfur may ignite at $190–260 °C.
• Ensure steady gas flow and proper ventilation.
• Avoid direct contact with liquid water to prevent media degradation.

With OXYDES-XG regeneration, the system can break down or oxidize:

• Sulfur compounds → elemental S
• Ammonia / amines → N₂ + H₂O
• VOCs / hydrocarbons → CO₂ + H₂O
• CO / NOₓ / SOₓ → harmless oxides or salts

This makes FERROLOX-XG a dual-function media — adsorber and catalytic oxidizer.

Yes. While specifically engineered for gas purification, the same MOF principle is applicable for removing toxic metals and organics from water and wastewater. FERROLOX-X is the corresponding media for water systems; FERROLOX-XG is optimized for gas.

• ✅ Regenerable – no hazardous solid waste
• ✅ Operates without liquid brine or chemical regenerants
• ✅ Captures CO₂ and H₂S simultaneously → lowers GHG impact
• ✅ Promotes reuse and long service life
• ✅ Complies with Watch Water’s green-chemistry principles

Yes – it is a solid, non-toxic material when handled properly. Observe the same precautions as with other iron-based media: avoid dust inhalation and ensure ventilation in H₂S areas. Always follow site-specific safety procedures.

FERROLOX-XG® is manufactured by Watch Water GmbH, Fahrlachstraße 14, 68165 Mannheim, Germany — an industry leader in advanced MOF-based adsorbers and regenerative technologies such as OXYDES-XG and SolarOxy-3C.

• ✅ Removes both acidic and toxic gases (H₂S, CO₂, SOₓ, NOₓ, NH₃, VOCs)
• ✅ Reusable and regenerable with OXYDES-XG
• ✅ High surface area and adsorption rate
• ✅ Low pressure drop, wide operating range (0–25 bar)
• ✅ Environmentally friendly — no liquid waste
• ✅ Compact design for retrofit into existing gas systems
• ✅ Made in Germany under Watch Water quality standards