KILNS Q&A

KILNS QUESTIONS AND ANSWERS

 

Click a question to reveal the answer:

How easy is it to make biochar?

Humans have been making biochar for thousands of years; the basic production process is not difficult. Carbon Gold’s technology has been developed to ensure that the process is as efficient as possible.

What do you use to produce biochar?

Carbon Gold has developed a series of kilns for the optimum production of biochar, which are economical, efficient and easy-to-use.

What is the scale of Carbon Gold’s biochar production?

Biochar can be produced by large plants capable of turning out 10,000 tonnes per year or as a cottage process producing just a small amount of biochar each day. Carbon Gold kilns only operates at the smaller end of this scale.

Can I buy a Carbon Gold biochar kiln?

Yes, the smallest of our kilns, the SuperChar 100 is available for sale.

What are the key features of the SuperChar 100?

  • Easy to Use: This is a simple device that two people can set up and operate on flat ground away from roads and settlements.Fast and Flexible: A batch of biochar can normally be produced within 24hrs from logs of different sizes.High Yields: The unit produces biochar slowly at low temperatures (450-500C) resulting in yields of 100kg to 150kg of biochar from approximately 500kg of feedstock (20-30%).Green Wood: The resulting biochar can easily be crushed, or ground in a garden shredder, for instant use as a soil improver.
  • Biochar for the soil: The biochar produced by the SuperChar 100 is ideal for use as a soil amendment.
  • Lower emissions: The SuperChar 100 re-circulates and burns off harmful greenhouse gases (methane and nitrous oxide) resulting in lower emissions from your biochar production process.

Can the SuperChar 100 be easily transported and delivered?

Yes, the SuperChar 100 is easy to transport in the back of a pick up and can also be moved by a tractor with a forklift.

Can biochar be added to the soil straight away?

Well-made biochar, which has been processed into smaller particles, can be applied directly to the soil but activating biochar with wormcasts and mycorrhizal fungi (as with our GroChar range) gets it to work even faster and more efficiently for optimum plant health.

What kind of biomass can be used in the Carbon Gold kilns?

Any dry uncontaminated organic woody material, from small branches to sawn logs, can be used to create biochar. It is important not to use feedstock that may have been contaminated with heavy metals such as old painted wood, which may contain lead, if the resulting biochar is being used to improve soil fertility.

Does pyrolysis emit some pollutants?

Biochar production does generate some pollutants – such as tars, phenols, carbon dioxide and nitrous oxide – but at far lower levels than would be emitted if the woody biomass was simply burnt. Carbon Gold has developed kilns that minimise these pollutants.

Can the kilns be transported abroad as well as in the UK?

Yes, for example, we supplied a number of inexpensive kilns to organic cacao farmers in Belize, who grow cacao for Green & Black’s.