The wood pellets Biodela™ are produced from locally harvested timber. We are supplied by Lithuanian local forestry administrations. The Lithuanian forestry, by law, are protected under the FSC® certification program.
You can read more about the Forest Stewardship Council® certification here:
You can find more information about the Directorate General of State Forests (Generalinė Miškų Ūrėdija)
Biodela™ is mainly supplied with timber from the list of forest Districts:
The first stage of pellet production is debarking of the logs.
Remaining bark cannot be even burned in drying drum heater because smoke can contain ash and have impact on wood pellet quality. The logs are made into sawdust locally with on-the-site machinery, guaranteeing perfect quality and pureness of the sawdust (no debris, no sand etc. remains). Main timber species: spruce, fir and aspen.
After being dried in the drying drum, the sawdust is transported in to the pellet granulation unit. During the drying of sawdust, various temperatures are maintained, causing direct impact on Color of wood pellets. In summer season, when less heat in drying is required, the sawdust has lighter color, after being dried. In winter, the opposite is truth. The COLOR of the sawdust has no impact on the quality of Pellets. The wood pellets are made of pure sawdust and have no additives whatsoever. One can convince himself by taking a breath of pellets – clean and pure pellets have a pleasant refreshing wood odor. If other smells are present, it is the sign of potential additives in pellets. It is not uncommon for some producers to add
Other materials to make the pellets whiter color.
The wood pellets are made in 6mm diameter. Other physical and quality features are constituted by the DIN Plus standard and Certification program
The picture depicts the samples, taken throughout the year: mid-summer to mid-winter and the color tone shift accordingly.
The 8mm clients are co-supplied from our partners (no DIN Plus certification). Also the Industrial grade DIN51731 norm wood pellets are available in limited quantities. Annual production capacity is 10000 tons.
For packing the wood pellets into small 15 kg bags an automatic Packaging line is used. Special robot stacks the bags perfectly and then wraps it with stretch film. The calibration allows any size from 960 kg up to 1200 kg/palette.
The 960 kg (64 bags) palettes are the most popular, because 25 palettes x 960 kg = 24 tones (official truck weight limit).
The 1050 kg (70 bags) palettes are appreciated by those customers, who save the warehouse floor space.
40’ Sea containers (typically for island-located clients) are loaded with 22 x 1200 kg = 26.4 tones.
The dimensions of palette are 1000 mm x 1160 mm x 1500 mm.
The packing of the wood pellets into the big bags is performed directly from the cooling unit. The bags are filled to weight 1000 kg. Each big bag has two holes: one on top for filling and one on the bottom to empty. The big bags have handles to be easily attached on the forks of the regular lifter (or Manitou lifter).
Wood pellets in small bags logistics
|Bags/kg per palette||Bags per truck||Palettes per truck||Total weight|
|64 bags / 960 kg||1600||25||24 000 kg|
|70 bags / 1050 kg||1610||23||24 150 kg|
|80 bags / 1200 kg||1760||22||26 400 kg|
Technical Specification for wood pellets Quality: DIN Plus
|Calorific value||17.8 MJ/kg||16,5 - 19|
|Ash content||0,6 % (at 550 °C)||≤ 0,7|
|Humidity||4,3 %||≤ 10|
|Fines (dust)||0.1 %||≤ 0,5|
|Density||687 kg/m³||≥ 600|
|Energy value||4,94 kWh/kg||4,6 – 5,3|
|Ash melting point||1420 (°C)||-|
|Sulfur||0,01 %||≤ 0,03|
|Mercury||0,1 mg/kg||≤ 0,1|
|Lead||3 mg/kg||≤ 10|
DIN Plus certificate confirms that processes are in respect to the DIN Plus certification agency DIN CERTCO GmbH requirements; the quality of pellets is being constantly monitored. During every production session - each 24 hours- the sample from the line is taken and examined at a small in-plant laboratory. The samples from each production session are being held in the archive for the reference if needed (for ~360 days). This allows for a 100% control of quality and also the traceability of production, even after being distributed.
The DIN Plus wood pellets have nominal requirements with the tolerance. DIN Plus certification means Biodela™ is responsible that every bag would be within these limits and take the responsibility if it is not. The actual results from the testing (on the day of our certification) can be seen in the table on the bag.
DIN PLUS standard requirements for the wood pellets: DIN PLUS standard requirements for the wood pellets:
EN PLUS Standard requirements for the wood pellets (as comparison):
Important information – many bags in the market are marked with fake calorific value and ash content, or at best it is 1 day production sample sent for testing (which is easy to manipulate). Mostly it’s what a trusty or naive Client wants to see, but not definitely the true: 0.3 % Ash, hardwood production, 18 kcal, premium quality etc.
Another popular standard is the EN Plus.
|Quality:||EN Plus A1||EN Plus A2|
|Length (mm)||< 40||< 40|
|Diameter (mm)||6 or 8 +/- 1||6 or 8 +/- 1|
|Fines (% of mass)||≤ 1||≤ 1|
|Bulk Density (kg/m³)||>600||>600|
|Net Calorific Value (MJ/kg)||16.5 - 19||16.5 - 19|
|Ash content (% of mass)||≤ 0.7||≤ 1.5|
|Ash melting point (°C)||≥ 1200||≥ 1100|
|Length: 1% of all pellets can be longer than 40mm, but max 45mm|
|Feinpartikel: particles < 3.15mm, fines at the final point of delivery|
|Ash content at 550°C|
|Ash for determining the melting temperature is created at 815°C|
In 2009 many major Italian (and some foreign) news portals covered a story of suspicious wood pellets (Naturkraft brand) being delivered to Italy. As stated by Markus Sommerauer in his article, “the alarm was raised after someone in the northern Aosta Valley region, who had bought the pellets, sent them for analysis because they did not burn well”. The quick access to the detailed answers can be found here: QUESTIONS | ANSWERS
The situation attracted a lot of attention and even now, as almost 5 years have passed, some market players still remember this situation. The careful inspection of the pellets showed certain amount of radioactive element in the burn-down pellets (ashes). The volume was not any near the critical limit; however the reputation of Lithuania as well as other Baltic producers was greatly diminished. Moreover, after full examination it was detected, that the pellets, which contained the Cesium 137, were made of sawdust, imported from the Republic of Belarus or Ukraine - in contrary to what has been declared initially. As argued by the stakeholders of the wood pellets market, the amount of radiation was minor to be of any real harm to anyone. The situation is seen an attempt to overtake the market share by means of protectionism and fraud.
The Lithuanian State agency for the Nuclear Safety is performing regular testing of various timber products. The levels radioactivity in the bio fuel timber is monitored and official reports are available (English text available).