SBEO, spent bleaching earth oil, is the oil recovered from the clay used to bleach vegetable oils. Bleaching earth leaves a refinery holding a significant amount of oil, and recovering it turns a disposal cost into a feedstock. That is the entire commercial logic of the product. It is bought by the same European pretreatment and HVO producers that take POME oil and acid oils, it carries a specification with hard limits rather than a description, and under Annex IX it is a feedstock that requires assessment rather than an automatic listing. We broker it, and the first thing we ask a seller is not the FFA but the date the earth was generated.
- 1Collection or rendering
- 2Pretreatment
- 3Certified trade
- 4Producer: HVO, SAF or FAME
- 5Fuel in the tank
The value is created at step three: without the certification the same molecule is worth what tallow was worth twenty years ago.
The specification a buyer actually works to
SBEO is not sold on a description. It is sold against limits, with the test method named next to each one, and a buyer who does not get that table will assume the worst. The set below is the one we see in the market: nine parameters, each with its ISO, ASTM or UOP method.
| Test | Method | Units | Limit |
|---|---|---|---|
| Moisture and volatile matter | ISO 662:2016 | wt % | Max 0.5 |
| Insoluble impurities | ISO 663:2017 | wt % | Max 0.5 |
| Unsaponifiable residue | ISO 3596:2000 | wt % | Max 1 |
| Iodine value | ISO 3961:2018 | g I2/100 g | Max 70 |
| Free fatty acid | ISO 660:2020 | wt % | Max 30 |
| Total chlorides | UOP 779-08 | wt ppm | Max 20 |
| Phosphorus (filtered) | ASTM D5185 | wt ppm | Max 20 |
| Sodium (filtered) | ASTM D5185 | wt ppm | Max 25 |
| Total metals | ASTM D5185 | wt ppm | Max 70 |
Two of those deserve a note. Total chlorides at max 20 ppm is tight, and it is a hydrotreatment limit rather than a quality preference: chlorides attack the catalyst and the metallurgy downstream, so a producer who says 20 means 20. Total metals at max 70 ppm is a sum, not a single element, and a cargo can pass on every individual metal and still fail the total. Ask your lab for the breakdown as well as the sum.
For what each parameter physically means and how it is measured, our parameters explained page goes through them one by one, and test methods and analysis covers why the method reference belongs in the contract.
Why the age of the earth decides the FFA
This is the part that separates a seller who knows the product from one who is passing on a document. FFA in SBEO varies enormously, from low single figures on freshly processed earth to well beyond the max 30 wt % limit above on material that has been sitting.
The reason is that the earth keeps working on the oil. Bleaching earth is an activated clay chosen precisely because it is chemically busy, and it does not stop being busy when the refinery is finished with it. Oil left in contact with it goes on hydrolysing, so the free fatty acid climbs while the material is in the pile.
The practical consequence is that the date the earth was generated is a commercial fact, not a technical footnote. Two cargoes with the same extraction date can be a long way apart if one came off earth that was two weeks old and the other off earth that had been stockpiled for a season. Ask for both dates. A seller who only offers the extraction date is either not close to the plant or would rather you did not know.
How the oil comes out of the earth, and why that changes the grade
- Solvent extraction is the normal route. The spent earth is agitated with a solvent, commonly n-hexane, at moderate temperature, typically in the region of 35 to 50 degrees Celsius, for a matter of tens of minutes. Solids and liquid are separated and the solvent is recovered from the oil.
- Solvent choice changes the product. More polar solvents extract more, but they also pull across more free fatty acid, so a higher yield can mean a lower grade. That is a real commercial decision at the plant, and it is worth asking about when the FFA comes back higher than you expected.
- Other routes exist, including supercritical fluid extraction, membrane processes and subcritical water. They give better yields at lower temperature, at a capital cost most operators do not carry.
- Residual solvent is a question a buyer will ask. It is not in the table above because it is usually handled as a separate declaration, but a producer taking the material into hydrotreatment will want to know the extraction route and what is left behind.
Annex IX: SBEO requires assessment, and that is not the same as being listed
Under the Annex IX framework, SBEO sits in the group that requires assessment rather than appearing as a straightforward listed feedstock. Our Annex IX feedstocks page sets out the full list and what each entry means.
In practice this is where value is won and lost. A cargo whose classification has been settled with the certification body and the receiving member state is a different commercial proposition from one where that conversation has not happened, and the gap between them is not small. The classification travels with the material, so settle it before you offer, not after a buyer has shown interest.
The certification side is ISCC EU with the correct scope. A supplier certified for used cooking oil does not automatically hold SBEO, and that is the gap that surfaces latest and hurts most. Our ISCC certificate scope page covers what to check on a certificate before you rely on it.
SBEO, SSAO and POME oil are three different products
They travel under names that get used loosely, and mixing them up in an offer is the fastest way to lose credibility with a buyer who knows the difference.
- SBEO is recovered from the spent bleaching earth used in refining.
- SSAO, soapstock acid oil, comes from splitting the soapstock produced when caustic refining neutralises free fatty acids. Different stream, different plant, different classification.
- POME oil comes off palm oil mill effluent, at the mill rather than at the refinery.
The full picture, including a diagram of where each stream arises in palm oil processing, is on our POME, SBEO and SSAO page.
What we ask a seller before we take it to a buyer
- The analysis, against the nine parameters above, with the methods named.
- When the earth was generated, and separately when the oil was extracted.
- The extraction route, and the solvent if solvent extraction was used.
- Monthly volume behind it, not the volume of the first parcel. A buyer with pretreatment capacity is planning a slate, not a trial.
- The certificate and its scope, and whether the Annex IX classification has been settled and with whom.
- Where it loads and in what, since parcel size narrows the buyer list faster than the specification does.
Frequently asked questions
Can SBE itself be sold, not just the oil?
Spent earth with residual oil trades for recovery or energy, the earth a fuel and a feedstock by turns, the market pricing its remaining calories. Nothing in this trade is waste until the last joule is sold.
What is the oil yield from bleaching earth?
A fraction of the earth's weight, the pressing efficiency deciding yield, twenty-something percent being ordinary territory, the recovery technology earning its margin there.
Is SBEO a niche or a real market?
Real, steady and quiet, refinery by refinery, the tonnage adding up the way side streams always do, niches being where attention goes to die and margins go to live.
Can SBEO certification follow the parent oil?
The waste chain documents from the refinery's records, the parent's identity carrying SBEO into the same Annex IX corners, papers inheriting like property.
What makes an SBEO offer credible?
Named parent refinery, honest FFA and water, a volume pattern, the three signatures of a serious side-stream seller. SBORE trades quietly and verifies loudly.
How is SBEO collected and stored?
The oil is drained or pressed from the spent earth and stored in closed tanks apart from the earth solids, because buyers want the oil and the grit is disposal. Separation at source is the whole craft.
What does an SBEO buyer look at first?
FFA and moisture with the parent oil named, the three numbers that place the cargo in the waste oil family. The bleaching earth story is the origin, the analysis is the product.
Can SBEO be mixed with acid oil?
Streams can blend commercially when the documentation of both survives the blend, though purity streams usually price better apart. Blend for logistics, separate for value, and know which you are doing.
Is SBEO traded all year?
It follows the refining campaigns that produce it, with steady refinery relationships producing steady SBEO flow. Continuous refining means continuous supply, campaign refining means calendar watching.
What makes SBEO offers fail?
Missing parent origin and water surprises, the two documents and numbers that turn a premium waste stream into a discount negotiation. Both are fixable at the tank.
How is oil recovered from bleaching earth?
By pressing or solvent extraction of the spent earth, yielding the oil we trade as SBEO. How much oil the recovery pulls out, and how clean, sets the FFA and impurity profile buyers quote against.
Why is spent bleaching earth treated as waste?
Because the earth has done its job in a refinery and carries the impurities it absorbed, the spent material is a waste stream, and the oil recovered from it inherits waste status with the documentation trail that follows. Handled right, that status is an advantage under the renewable rules, not a problem.
What is SBEO?
Spent bleaching earth oil: the oil recovered from the clay used to bleach vegetable oils. Bleaching earth leaves a refinery holding a significant amount of oil, and recovering it turns a disposal cost into a feedstock.
What is a normal FFA for SBEO?
There is no single normal. A working specification puts the limit at max 30 wt % measured to ISO 660:2020, and material ranges from low single figures on freshly processed earth to well above that limit on earth that has been stockpiled. The age of the earth matters more here than for most feedstocks.
What is the difference between SBEO and SSAO?
Different streams entirely. SBEO is recovered from spent bleaching earth. SSAO is soapstock acid oil, produced by splitting the soapstock from caustic refining. They have different classifications and different buyers, and confusing them in an offer costs you credibility immediately.
Is SBEO an Annex IX feedstock?
It sits in the group that requires assessment rather than being a simple listed entry. That assessment, settled with the certification body and the receiving member state, is where a large part of the value sits.
What certification does SBEO need?
ISCC EU with the correct scope for the material, plus a valid proof of sustainability. A certificate covering used cooking oil does not automatically cover SBEO.
Do you publish an SBEO price?
No. We do not publish price assessments. What we can tell you is where a specific parcel is likely to clear, against its actual analysis, origin, volume and destination, because a number quoted without those is not a price.
Market news
Recent headlines from across the feedstock and renewable fuel sector. Nothing specific to this market has come through the wires lately, so this is the wider view. The links go to the publisher; we do not host or edit their reporting, and a headline here is not our endorsement of it. Scroll for more.
- Introducing Green Value Chain Connect: From WCEF learnings to value chain action
- Ashland unveils vegetable oil-based crop protection dispersant
- Polybion’s cultivated cellulose debuts on the runway
- Maersk successfully bunkers vessel with US corn-based ethanol
- California Bioenergy acquires Sevana Bioenergy’s interest in South Dakota Biogas LLC
- Nord Gas Solutions wins tech contract for Polish biogas liquefaction plant
- Island Oil rebrands as Island Energies
- ContiTech to Use BolderBlack for Conveyor Belt Production in the Americas
- Plastics Recycling: TotalEnergies Becomes the Sole Owner of the Grandpuits Advanced Plastics Recycling Plant
- Stargate Hydrogen secures 21 million Euros from the EU Innovation Fund to further scale up its operations
- I’m green™ bio-based Helps Deterra® Win Multiple Industry Awards for Pharmaceutical Packaging
- „I’m green™ bio-based” verhilft Deterra® zu mehreren Branchenauszeichnungen für pharmazeutische Verpackungen
- World’s Largest Green Methanol Project Achieves ISCC EU Certification
- Bundesumweltministerium startet Innovationsplattform “Circular AI Hub”, Künstliche Intelligenz soll Unternehmen der Kreislaufwirtschaft helfen
- Brazil sorghum output surges as China exports and ethanol demand grow
- Hong Kong opens first hydrogen fuel testing lab
- NAW appeals Oregon EPR ruling
- Industry stakeholders urge EU to retain RED III binding RFNBO targets post-2030
18 headlines, updated automatically. Last refreshed .
Sources and further reading
Primary sources for the rules and figures on this page, so you can check them yourself. Legislation is amended: always read the consolidated text on the date that matters to you.
Who to ask about SBEO
Just ask. SBEO to place, or looking for volume? Send the analysis, the monthly tonnage and when the earth was generated. That last one changes the answer. You get Bart van den Brug on the other end, same working day, in English or Dutch, and across the team also in French, Portuguese, Polish, Czech and Russian.
On how we work: on the feedstocks and fuels on this site we are a broker. We never take title, we do not trade our own book, and we are paid a commission on business that concludes. Additives are the one exception: those we also buy and sell for our own account, and we say in which capacity we are acting before you commit to anything. Either way you will hear it from us when the answer is no, or when your parcel is not ready for the conversation you want to have. A market read or a second opinion on a specification costs nothing and commits you to nothing.
Happy to look at whatever you have, even if it is half an analysis and a question.
+31 6 115 83 448
bart@sustainablecommodities.eu
Sustainable Commodities 3 B.V., Lemmer, the Netherlands
Ask about SBEO
Specification, volume, location and certification are enough to start.
Or e-mail us directly: bart@sustainablecommodities.eu
Last reviewed 29 September 2026. Regulatory references are given for orientation and are not legal advice: verify against the current Official Journal text before contracting.