Build. Operate. Manage.
We work on a "Build, Operate & Manage" basis, where we choose a site based on its location and economic feasibility. Once chosen, we construct the production facility and start the manufacturing process with the help of our technology partners. Since we also manage the site by ourselves, it becomes easy to manage the commodities trading.
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Our production sites
Biocarbon Tech Asia
Pyrolysis and torrefaction of waste oil palm trunks (OPT) and empty fruit bunches (EFB) to produce biochar, black pellets and biogas while achieving carbon removal.
Excess heat from pyrolysis is used to dry EFB before being fed into a torrefaction machine plant that produces black pellets. A biogas plant on site captures methane from palm oil mill effluent (POME), producing biogas for electricity generation and biomethane for use as fuel in its trucks, whereas a liquefaction unit produces bio-LNG.
Location: Sabah, East Malaysia
Shipping port: Tawau
Technologies deployed: Pyrolysis, Torrefaction
Commodities produced:
- Biochar: 1,700 tpa
- Black Pellets: 15,000 tpa
Onnu Bioflow Ipoh
Pyrolysis and Torrefaction of bamboo offcuts to produce biochar, black pellets and green energy while sequestering carbon.
Sourced from local partners like SEAD, the bamboo offcuts come from sustainable agroforestry efforts that rehabilitate degraded land and support community livelihoods. Instead of decomposing and releasing CO₂, the offcuts - rich in carbon - will be pyrolysed and torrefied using Onnu’s proprietary technology, in partnership with Kawan Engineering. The project will sequester around 5,000 tonnes of CO₂ per year and return 50% of the biochar to local farmers, completing the circular bamboo cycle.
Location: Ipoh, Malaysia
Shipping port: Ipoh
Technologies deployed: Pyrolysis, Torrefaction
Commodities produced:
- Biochar: 2,000 tpa
- Black Pellets: 15,000 tpa
Onnu Bioflow Perak
Pyrolysis of cleared Rubber Tree Trunks to produce biocarbon and green energy.
Historic rubber plantations in Malaysia are being repurposed as a result of declining demand, low yields and contagious fungal diseases. The government of Malaysia aims for hundreds of hectares of rubber trees to be removed by 2030. Rubber trees have very high carbon content and are too valuable to be left for decay or burned.Carbonisation of these trees produces high-quality biocarbon rich in carbon and energy, serving as an effective replacement for coking-coal and helping to decarbonising hard-to-abate sectors.
Location: Perak, Malaysia
Shipping port: Klang
Technologies deployed: Pyrolysis, Carbonization
Commodities produced:
- Biocarbon: 12,500 tpa
How do we choose a site?
Choosing a site is a crucial decision that will heavily impact the supply chain and trade of the commodity in question. When deciding on the location of a new site, we take the following factors into consideration:
Technologies we're engaged in
We are proud to partner with leading innovators to build breakthrough technologies that transform biomass into high value renewable commodities like biochar, black pellets, bio-LNG and biocarbon. By leveraging advanced processes like pyrolysis, torrefaction, and biomethane liquefaction, we not only address the problems of disposing of organic waste but also remove carbon from the atmosphere. Our collaborative efforts focus on optimizing these cutting-edge technologies to create reliable, low-carbon solutions that drive the transition to a more sustainable, circular energy future.
Pyrolysis
Pyrolysis is the thermal decomposition of biomass in an oxygen-limited environment. This produces syngas, which can be combusted in a controlled way for renewable energy production, and biochar, a carbon-rich material that can lock carbon away for 100+ years.
The pyrolysis process begins with organic feedstock entering the feeder. This feedstock has been dried to below 20% moisture content. The feedstock enters into the reactor, where it is heated to 600+°C. Feedstock in the chamber is thermally decomposed into syngas and biochar.
The pyrolysis conditions can be altered to change the outputs of the process. This can be used to achieve project specific goals, for example maximum carbon sequestration in the biochar, or maximum syngas yield.
Torrefaction
Torrefaction is a milder form of pyrolysis, thermally degrading biomass in an oxygen-limited inert environment with the sole aim of increasing the energy density of the biomass to produce high quality solid fuels.
The torrefaction process, like pyrolysis, begins with organic feedstock entering the feeder. This feedstock has been dried to below 20% moisture content. The feedstock enters into the reactor, where it is heated within a narrower temperature range of 200–300 ℃.
The output is pelletised to produce black pellets, a solid, energy-dense biofuel with a high calorific value of 20-30 MJ/kg. Like pyrolysis, the properties of the feedstock and the process conditions heavily influence the properties of the black pellets produced.
Kawan
Our Engineering Partner
Kawan Engineering Sdn Bhd is a manufacturing and engineering solutions provider based in Malaysia. They operate in three factories with a total working area of approximately 13,000 m2.
Onnu has partnered with Kawan to jointly fabricate and deploy pyrolysis reactors, torrefaction reactors and AD biomethane liquefaction plants.
Pyrolysis + torrefaction: a perfect combination
Our unique approach of joining pyrolysis with torrefaction maximises the commercial and environmental opportunities from waste biomass. The process is continuous, and the excess heat transferred from the pyrolysis process to the torrefaction process eliminates external energy requirements. This makes the process much more efficient while still being sustainable.
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Palm oil plantations: truly circular operations
Palm oil processing units in Malaysia are an excellent example of what an ideal production site can look like. The biomass waste streams generated from these sites can be effectively diverted into pyrolysis, torrefaction, Anaerobic Digestion & Biomethane Liquefaction. This not only prevents the environmental damage caused by waste streams, but also derives value from them. Through our BOM operations, all the waste streams produced from palm oil operations can be converted into renewable biofuel sources and achieve carbon removal.
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Have a site suitable for our operations?
If you think you meet our requirements for a production site, get in touch now!
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