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Biochar, a charcoal made out of burning woodstock or other feed material (rather than coal) is a relatively low-cost material that has several uses. The main use of soil remediation is not as economically viable as is generally promoted. However, for water treatment, and as a use in biochar-clay plasters, it has very promising results.
Biochar has a huge number of applications, over 1,000 as delineated in recent research. Biochar is not as well-known in building design or water treatment, but moreso in farming, where there are interesting research results, especially for organic farming. The main uses are in terms of a decontaminant for soil and for water; soil enhancement in farming; reducing the carbon footprint of agriculture; as an animal feedstock; odor reduction in poutry farming, and other uses.
Biochar can effectively insulate from heat, noise, and electromagnetic radiation, as well as regulate/control humidity. Uses for the latter include uses in viniculture storage.
- The use of biochar as building material – cities as carbon sinks
- The use of biochar as building material - the Biochar Journal
- Biochar as Building Material for Optimal Indoor Climate
- The 55 uses of biochar
- Biochar as a Building Material
- Biochar Plaster and Biochar Bricks by Owen Geiger of Natural Building Blog. Note that the source of biochar is rice hulls, which is very different from biochar made from soft- or hard-woods (which is the process for biochar used in water filtration).
- Biochar as thermal insulation
Biochar in Concrete
Research rather than actual availability
- NOx Adsorption, Fire Resistance and CO2 Sequestration of High Performance, High Durability Concrete Containing Activated Carbon