Full specifications, application guidance, and grade details for biochar, activated carbon, and carbon fuel — each from the same biological feedstock and facility.
The most stable product we make. Biochar's carbon matrix — turbostratic, aromatic, resistant to microbial attack — remains in soil on timescales relevant to climate intervention. The H/Corg ratio is the gate. Everything above it is commentary.
Our standard biochar grade targets H/Corg ≤ 0.35, fixed carbon ≥ 70%, and pH between 7.5 and 9.5 — parameters selected to maximise soil agronomic benefit while meeting the permanence thresholds required for CDR credit issuance under EBC and IBI protocols.
Biochar is not charcoal. Charcoal is incompletely combusted biomass with variable and often high H/Corg, significant volatile matter, and no quality certification requirement. Biochar is produced under controlled conditions, tested against published standards, and certified per batch. The distinction matters for both soil application outcomes and carbon accounting.
| Parameter | Value | Method |
|---|---|---|
| Fixed carbon content | ≥ 70% | ASTM D3172 proximate analysis |
| H/Corg molar ratio | ≤ 0.35 | EBC 2023 elemental analysis protocol |
| pH (1:5 H₂O) | 7.5 – 9.5 | EBC 2023 / IBI-STD-2.0 |
| Ash content | < 20% | ASTM D3174 |
| Moisture (as shipped) | < 15% | ASTM D3173 |
| Bulk density | 200 – 400 kg/m³ | ASTM D7481 |
| Particle size | 0.05 – 5 mm | Sieve analysis, customisable |
| Heavy metals | Within EBC limits | ICP-MS per EBC 2023 Annex |
Where biochar's value lies in what it holds onto in the long run, activated carbon's value lies in what it adsorbs right now. The internal surface area — developed through controlled activation following initial conversion — is where all the work happens. 900 to 1,200 m²/g is a lot of surface area. A gram of our activated carbon, unrolled, would cover roughly the floor area of a modest house.
Adsorption is the binding of molecules to a surface. It is different from absorption (molecules entering a bulk material). In activated carbon, contaminants are held in the micropore and mesopore network through physical van der Waals forces and, in some cases, chemical bonding. What a given activated carbon adsorbs and how fast depends on pore size distribution, surface chemistry, and the contact conditions of the application.
Our activated carbon is available in three physical forms to suit different application configurations: granular (GAC), powdered (PAC), and pelletized. Each form has the same source material and similar surface area; the form factor determines how it's used, how it's handled, and when it needs to be replaced or reactivated.
| Parameter | Value | Method |
|---|---|---|
| BET surface area | 900 – 1,200 m²/g | ASTM D3663 (N₂ adsorption) |
| Iodine number | ≥ 900 mg/g | ASTM D5742 |
| Methylene blue number | ≥ 200 mg/g | ASTM D5919 |
| Moisture content | ≤ 5% | ASTM D2867 |
| Ash content | ≤ 10% | ASTM D2866 |
| pH (slurry) | 6.0 – 8.0 | ASTM D3838 |
| Bulk density (apparent) | 400 – 550 kg/m³ | ASTM D2854 |
| GAC particle size | 8×30 or 12×40 mesh | ASTM D2862 |
The energy case for biogenic carbon fuel is simple: the calorific value is comparable to thermal coal, the sulfur content is lower, and the carbon in it came from the atmosphere recently rather than from geological reserves over 300 million years. It burns where coal burns — in boilers, kilns, furnaces — without requiring equipment modification in most cases.
The economic case depends on the spread between the carbon fuel price and the coal price it replaces, net of any carbon cost applied to the displaced coal in the buyer's regulatory context. In markets with active carbon pricing — Japan's J-Credit scheme, South Korea's ETS, and progressively under India's CCTS — the economics of biogenic fuel improve with each increment of carbon cost imposed on fossil alternatives.
This product does not generate CDR credits — the carbon in it is released on combustion. What it generates is a substitution benefit: the fossil carbon that would otherwise have burned is not burned. That distinction matters for how buyers account for it: it is a Scope 1 or Scope 2 reduction, not a carbon removal purchase.
| Parameter | Value | Method |
|---|---|---|
| Gross calorific value | ≥ 4,500 kcal/kg | ASTM D5865 (bomb calorimetry) |
| Fixed carbon | ≥ 65% | ASTM D3172 proximate analysis |
| Volatile matter | ≤ 25% | ASTM D3175 |
| Ash content | ≤ 8% | ASTM D3174 |
| Moisture (as shipped) | ≤ 12% | ASTM D3173 |
| Total sulfur | ≤ 0.5% | ASTM D4239 |
| HGI (grindability) | 40 – 80 | ASTM D409 |
| Form | Briquette / pellet / lump | Per buyer specification |
The same feedstock, controlled through different conversion conditions, produces materials with different physical properties and different end uses. What is consistent across all three is the traceability: feedstock intake date, batch number, production parameters, and laboratory certificate travel with the product from facility to buyer. Contact us for product samples, technical data sheets, or supply discussions.