Fe Concentrate is a highly concentrated powdered source of reactive iron based on Fe(OH)₃, intended for efficient hydrogen sulphide removal directly in the digester of a biogas plant.

The product contains 90% dry matter, which ensures high reaction efficiency and minimal reagent consumption.

Product type: powdered iron hydroxide
Main component: Fe(OH)₃, FeO(OH), traces of FeO, Fe₂O₃
Dry matter: 90%
Delivery form: powder

Principle of H₂S removal
Active iron reacts directly in the substrate:
Fe(OH)₃ + H₂S → FeS ↓ + H₂O

It forms:
insoluble iron sulphide which prevents the re-formation of hydrogen sulphide in the biogas.

Why a high dry matter content is important
High dry matter concentration (>90%) reduces transport cost per unit of active iron.

In Fe Concentrate 35-37% active material. This means:

• lower transport costs
• lower reagent consumption
• stable reaction
• high concentration of active Fe
• logistics savings

Advantages of Fe Concentrate:

• high reaction activity
• fast H₂S reduction effect
• operation directly in the digester
• no corrosive impact
• safer than FeCl₃
• does not affect the biological process
• reduces load on activated carbon filters
• protects gas engines
  Environmental origin 🌱

Fe Concentrate is produced from natural iron-containing sediments (iron hydroxide sludge) extracted within ecological projects for restoring aquatic ecosystems in Germany.

Use of the product:

• improves water quality
• reduces environmental impact
• reuses natural resources
  
  Typical dosage 0,8 kg / t substrate. Depends on:

• H₂S concentration
• process temperature
• substrate type
• organic loading rate

Example
For a 1MW electric power 100% maize silage-based biogas plant or 4 tpd biomethane per day the usage is 40 kg/day on the constant basis.  With the usage of the iron hydroxide in the biogas reactor the sulphur level in biogas is reduced from 1500-2000 ppm to 60-80 ppm.

Packaging:
- bags
- big-bags

Supplied:

• Pallets 1 ton
• full truckload 24 t