Biological H₂S removal
Microbial sulphur conversion, often discussed where load is relatively steady and operating chemistry can be managed. Not a universal default.
Gas cleaning
H₂S is removed before it becomes an equipment problem
Hydrogen sulphide and related contaminants are taken out to protect upgrading skids, compressors and the fuel specification. Biological, chemical and scavenger routes exist; the choice is a project decision.
Why this step exists
Raw biogas is not a fuel specification
Sulphur, moisture and other traces have to be managed before carbon dioxide removal and compression. Pretreatment quality often decides whether PSA, membranes or water scrubbing can hold their design recovery.
Chemical scrubbing
Aqueous or alkaline routes used when the sulphur load or the downstream skid needs a harder guarantee. Consumables and spent liquor are part of the operating conversation.
Scavengers and polishing
Media beds used to finish residual H₂S before upgrading or compression. Useful as polish; rarely a substitute for a designed cleaning step on a sour gas.
Saimona evaluates those routes with gas-cleaning partners against measured gas. We do not publish a single house process as if it were owned technology. Cleaning is selected so the upgrading and compression train can survive — not as a catalogue extra.
Project enquiry
Have a CBG project in mind?
Share feedstock, location and stage. We will discuss technology, feasibility and a practical project pathway.