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SUSTAINABILITY | Read Our Commitment
(Image: "example AD site", courtesy of Malaby Biogas, Wiltshire)
There are an increasing number of research papers indicating that activated carbon can be used to increase the conversion efficiency of methane made in an AD reactor - anywhere from 5-20%.
Application of biochar as an additive to enhance biomethane potential in anaerobic digestion
Many activated carbons are derived from fossil fuels and using them in AD would negate the "sustainability" of the carbon LCA (Life Cycle Analysis). Activated carbons are also expensive and needed in high tonnage. In the first instance, they can be uneconomic. However, we believe our biochar can deliver a positive benefit.
Biochar (by definition and certification) is carbon made from sustainable resources. If the biochar is eventually added to soil, it is an approved IPCC carbon-negative technology. Technically biochar works and performs the same DIET task (see ref. papers) as activated carbon. There is work to do around scaling output, but biochar manufacturers are confident that biochar will give lower-cost, higher-benefit over activated carbon. We now have trials underway with a leading AD Biogas company.
You can find high quality biochar for sale from our online store!
Activated carbon is sometimes used to 'polish' (or 'scrub') sulphur and other volatiles such as siloxane from SynGas prior to combustion in CHP engines. (This reduces fouling of the CHP engines. Development work is needed to prove biochar can replace activated carbon for this application. Please call if interested in working with us.
Carbon can be used to filter odours from landfill gas and composting. However, the tonnage required and the price per tonne make this uneconomic, so the current default option is to use wood chip as a biofilter. Using new production methods and sustainable raw materials biochar is set to become a viable option. If you are interested in testing the concept, please call to discuss it.
Biochar has an enormous potential to help mitigate climate change by locking (sequestering) the carbon into the soil. The detailed numbers can be overwhelming so just one headline: biochar has the potential to offset up to 12% of the TOTAL CO2 emissions.
Biochar is used in the following water and gas filtration applications
Biochar Granules, 0-13 mm gradeOur larger pack sizes will typically save you 20% to 40% on..
Biochar Granules (2-8mm)
5 Kg (approx 15 litres)
12 Kg (a..
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