Eco Park Biochar

Material categories:

Wood / Wood based

Carbon based

Identification number:


Sample produced by:


Sample date:

8 Aug 2023 (Received)

Sample condition:


Source-driven material

Biochar is generally defined as a pyrolyzed biomass (charcoal) intended for use as a soil amendment. However there are other uses for biochar as a concrete amendment, dye, etc. Pyrolysis is the thermochemical decomposition of organic materials in the absence of oxygen. This process is achieved through controlling the temperature and length of a burn. Most biochars are highly stable, with carbon half-lives of >1000 years likely (estimates of ~500-50,000 y). This results in a material that could potentially act as a carbon sink, sequestering carbon that would otherwise contribute to green house gas emissions.

This biochar was produced using yard and tree waste from Y-Park Salvage yards. This wood usually would be destined for one of Hong Kong's landfills, however the EPD is experimenting with a biochar plant that would divert this waste stream.

This plant is being set up by Earth Systems Australia. For more information on biochar production, uses and the technology used to create it:

Depth of sample extraction:

On/Above Ground

Slope at extraction point:

< 35°

Land Use:

Vacant land/construction in progress



Production Attribute

Distance from source location: <= 100km

Production Energy: Low

Water Footprint for Production: Low

Collatoral Pollution:Low

CO2 Footprint: Low

Ecological Attributes

Recycling Percentage: 100%

Reclaimed Components: 100%

Recycling potential: High

Expected Lifespan: More than 50 years

Degradation: More than 50 years






Sensory Attributes

Resilience: Brittle

Odour: None

Glossiness: Matte