Hydrogen sulphide (H₂S) removal from Biogas
Biogas is produced by the digestion of organic matter in landfills and anaerobic digesters. Hydrogen sulphide is formed during the anaerobic digestion of sulphur-containing molecules, such as sulphur-containing amino acids within proteins.
The Jacobi Group solution with carefully selected filter media from our AddSorb product range and, if requested, with our dedicated mobile filters from our EcoFlow range, are used to remove hydrogen sulphide prior to the combustion engines or turbines. On combustion of the biogas, H₂S can be converted into sulphur dioxide or sulphur trioxide (SO₂ or SO₃ respectively), and will result in:
- Higher maintenance cost due to corrosion
- A negative effect on the engine oil, meaning it needs to be changed more frequently
- A contribution to the SO₂/SO₃ emissions of the engine exhaust
Hydrogen sulphide concentrations can also be too high for feeding to the supply grid. In general, a biomethane quality of over 99% methane must be achieved to be able to feed to the grid.
New OX Series Activated Carbon Pellets
All the benefits of carbon pellets. All the sustainability of coconut shell.
Jacobi’s GO GREEN initiative seeks to replace all fossil fuel derived products in our portfolio with sustainable alternatives. With this ongoing mission in mind, Jacobi is offering our AddSorb OX Series pellets for the removal of H₂S. Produced in one of our Indian plants, these doped activated carbons are not only sustainable but also offer exceptional performance with sulphur loadings of up to 80 wt%.
Why coconut shell?
Coconut shell provides the most sustainable raw material in the activated carbon market and provides over 54% lower global warming potential than activated carbons derived from coal. And Jacobi’s CleanTech char technology is being rolled out through our supply chain to drive emissions even lower. Using this product can help lower your Scope 3 emissions and reduce your CO₂ footprint. See our sustainability reports for more details.
BIOGAS: ACTIVATED CARBON AND MOBILE FILTER
AddSorb™
Our AddSorb™ product series includes products with superior chemical properties and high adsorption capacity to remove hydrogen sulphide. Backed by rigorous quality control measures and extensive testing, our AddSorb™ range delivers consistent and reliable performance. By reducing corrosion and damage caused by SO₂/SO₃ forming during combustion, the AddSorb™ range helps prolong the lifespan of your equipment, minimising maintenance costs and downtime.
| Product Name | Form | Characteristics |
|---|---|---|
| AddSorb™ VA6-BG | Granular / Pellets | Caustic impregnation, O2 required |
| AddSorb™ VA12-BG | Granular / Pellets | Halogen salt impregnation, O2 required |
| AddSorb™ OX30 | Pellets only | Coconut-based, doped, very high capacity, O2 required |
| AddSorb™ OX20 | Pellets only | Coconut-based, doped, very high capacity, O2 required |
| AddSorb™ VA10 | Pellets only | Caustic impregnation, O2 deficient gas streams |
EcoFlow™
Hydrogen sulphide (H₂S) removal filters from Jacobi’s EcoFlow™ mobile filter range are usually installed before the water condenser in the biogas purification process.
Jacobi Services has a full range of mobile filters for flow rates between 75 and 4,000 m³/h biogas per filter. Our wide range of rental EcoFlow™ filters are offered via a local Jacobi service centre, avoiding international transport.
BIOGAS: SOLUTIONS
Auxiliary equipment and additional services
In addition to mobile filters and different media, Jacobi Services also offers various items of auxiliary equipment and additional services for hydrogen sulphide (H₂S) removal from biogas, including:
- Selection of the type and number of EcoFlow™ filters. The selection depends on the flowrate and the estimated annual activated carbon consumption.
- A series of removable insulation jackets to prevent condensation of water and to keep the relative humidity within an acceptable range for EcoFlow™ mobile filters.
- The capabilities of the Jacobi France laboratory for externally accredited self-ignition testing of virgin or spent activated carbon.
Recycling and reactivation
Depending on the region and the composition of the spent carbon, different recycling or disposal routes are possible. Impregnated spent activated carbons are currently not recyclable.
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