What your waste can become
Your feedstock. Your opportunity.
POME and empty fruit bunches can be digested into biogas. Biogas can drive a generator, or be cleaned and upgraded into biomethane for Bio-CNG or bio-methanol. Digestate can be returned to the estate as organic fertiliser.
Explore energy solutionsPalm oil mill process routes
From mill residues to useful energy.
A route overview. The selected process and equipment depend on feedstock and product specifications.
- Feed preparation
POME & EFB
POME treatment, with EFB preparation where co-digestion is selected.
Review the feedstock - Anaerobic digestion
CSTR Plus / SDAR
Convert the organic load into biogas. Match reactor selection to the feed.
Explore reactors - Gas conditioning
Biogas purification
Remove hydrogen sulfide and manage moisture and other relevant contaminants.
Explore desulfurization
Select the downstream energy route
Power & heat
Conditioned biogas can supply suitably specified energy equipment.
Biomethane → Bio-CNG / Bio-LNG
Membrane upgrading followed by compression or project-specific liquefaction integration.
Explore renewable gasGreen methanol
Gas preparation, reforming, synthesis and refining connect the gas supply with a liquid-fuel route.
Explore methanol skidsDigestate handling and downstream wastewater treatment are designed alongside the selected energy route.
POME digestion
Lagoon or tank?
A comparison of treatment approaches for palm oil mill effluent.
| Design consideration | Lagoon (pond) | CSTR Plus (tank) |
|---|---|---|
| Volumetric loading | <1 kg COD/m³·d | >5 kg COD/m³·d |
| Reactor volume | Reference | About half |
| Sludge | Not discharged during operation | Discharged continuously |
| Performance over time | Declines year by year | Maintained |
Source: BIOZOOM design data for POME applications.
Already running a covered lagoon? Our desulfurization, membrane and CNG skids can be added to an existing biogas plant.
POME + EFB co-digestion
Add EFB, get more gas
SDAR digests POME together with EFB or fibre at 10–20% solids. Biogas production rises by more than 30%, and methane content increases over time to above 60%.
Source: BIOZOOM design data for POME and EFB applications.
Explore SDARFuel logistics
Far from a pipeline? Move the fuel.
Pipelines reach only some mills. Our CNG and bio-methanol skids let a mill produce fuel where the biogas is and move it by truck.
Water treatment
Meet discharge requirements too
Digester effluent can be polished with our nitrogen-removal and clarification technologies, so gas production and discharge compliance are handled by one team.
Project partnership
How we can work with your mill
In a joint venture, the mill provides POME, EFB, space and process water. BIOZOOM provides the process technology and the EPCC, produces CNG and organic fertiliser, manages operations and sells the CNG.
Partner with UsQuestions from mills
Plan your next step.
How much biogas can a CSTR Plus produce from POME?
Design data is above 35 m³ of biogas per m³ of POME, with methane above 60%. Your actual yield depends on your POME; send us your flow and COD for an estimate.
What happens to the sludge?
CSTR Plus discharges sludge continuously, so it does not build up in the digester.
Can you work with our existing lagoon?
Yes. Desulfurization, membrane upgrading and CNG skids can be added downstream of an existing biogas plant.
Who owns the plant?
It depends on the model: you own it under EPC or a process package; it is shared in a joint venture.