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Biochar kilns: how to produce biochar

Turn surplus biomass into something useful

Carbon Gold is the world’s leading biochar company, promoting the responsible production of biochar using our innovative SuperChar biochar kilns.

Biochar Kilns by Carbon Gold

Making biochar and using biochar kilns transforms your waste biomass into a valuable resource – reducing atmospheric carbon, improving soil health and boosting plant growth.

SuperChar biochar kilns use low-temperature pyrolysis methods to efficiently convert a range of wet and dry feedstocks into biochar.

The biochar kilns come in a variety of sizes to suit low-infrastructure environments. On-site training and expert support can be tailored to suit your project requirements.

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SuperChar 100 Range

For small-scale, easy to use biochar production, we developed a range of efficient and transportable biochar kilns that can produce up to 100kg of biochar per day.

These biochar kilns operate a two-phase pyrolysis cycle:

  1. Steam drying moist or fresh cut feedstock to be processed.
  2. Turning feedstock exothermic, utilising syngas to maintain kiln temperature.

SuperChar 100 Mk I

  • Burn time: around 8 hours
  • Moisture content: up to 40%
  • Feedstock size: logs up to 20cm in length and 10cm in diameter
  • Feedstock type: wood
  • Feedstock volume: 1.5m3
  • Fuel source: logs up to 15cm in length and 5cm in diameter
  • Char yield: up to 100kg per burn
  • Infrastructure used: handheld leaf lower (provided with the kiln)

 

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SuperChar 100 Mk II

  • Burn time: around 8 hours
  • Moisture content: up to 60%
  • Feedstock size: wood shavings or rice husk, logs up to 30cm in length
  • Feedstock type: most types of biomass
  • Feedstock volume: 1.5m3
  • Fuel source: logs up to 15cm in length and 5cm in diameter
  • Char yield: up to 100kg per burn
  • Infrastructure used: 3 electric fans and a generator (provided with the kiln)
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SuperChar 500 Range

A versatile dual body biochar kiln capable of both drying and charring a wide range of feedstocks, allowing you to produce up to 800kg of biochar per day.

This unique kiln can dry and char wet feedstocks in alternate kiln bodies, using heat and gas produced during the pyrolysis process.

Built into a 20ft container for ease of transport, this kiln has 6m3 capacity for feedstock in each chamber and can process a wide variety of biomass into biochar.

SuperChar 500 Mk I

  • Burn time: around 8 hours
  • Moisture content: up to 60%
  • Feedstock size: wood shavings or rice husk, logs up to 30cm in length
  • Feedstock type: most types of biomass
  • Feedstock volume: 2 x 6m3
  • Fuel source: dry woodchip and wood pellets
  • Char yield: up to 800kg per burn (400kg per 6m3 chamber)
  • Infrastructure used: 4 electric fans and a generator (provided with the kiln)
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Biochar Kilns Case Studies

robert-eden-1

SOUTH OF FRANCE

Robert Eden, biodynamic winemaker and organic smallholder in Chateau Maris, South of France. Robert Eden is a biodynamic winemaker who lives in the South of France’s Languedoc region with his wife and four daughters. His…

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a-biochar-kiln

FALKIRK, SCOTLAND

Ben Williams, Carbon Reduction Coordinator, The Helix. Ben Williams is the Carbon Reduction Coordinator at The Helix in Scotland, a 350-hectare land transformation project creating community connections and a brand new urban parkland. His goal…

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What's in our Enriched Biochar

Microscopic Image of Biochar
Biochar

A stable form of soil carbon with a naturally porous structure which improves aeration, water-holding capacity and nutrient retention of soils and acts as a refuge for beneficial soil microbiology. The building block of resilient soils.

Mycorrhizal Fungi
Mycorrhizal Fungi

A natural soil fungi that form a symbiotic partnership with plants, acting as a secondary root system while using the biochar as a refuge.

Trichoderma
Trichoderma

An antagonistic type of fungi that feed on soilborne pests, in defence of their host plant's root system, housed inside the biochar.

Seaweed
Seaweed

Filled with trace minerals that are good for healthy plant stems and leaves.

Wormcasts
Wormcasts

Full of all the healthy bacteria and humic compounds that roots need to stay healthy.

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Tomatos-924x1024

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Biochar Horticulture by Carbon Gold

Biochar for Commercial Horticulture

Carbon Gold's Biochar helps commercial propagators to produce outstanding fruit and vegetables in a variety of systems.

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Tree Care Biochar by Carbon Gold

Biochar for Professional Tree Care

When added to top soil and planting media, biochar significantly increases survival rates of newly planted trees, boost the health and vitality of established trees, and reduce losses.

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Sports Turf Biochar by Carbon Gold

Biochar for Sports Turf

From Ascot Racecourse to Premier League football pitches, biochar is a permanent solution for attractive, resilient and playable turf.

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