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Biochar

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=== The Biochar Economy ===
[[Image:2959038953 31a102dc5d.jpg|thumb|right|Image from Flickr user '''visionshare''' by CC license]]
Charcoal may represent a significant new materials cycle and value marker within emerging frameworks for regenerative human settlement.
==== List of uses of biochar====
*Add charcoal to compost heap to speed up composting (probably works via enhanced microbial activity)
*Biochar for sale as a source of income for an emerging community
*Combine with solar thermal heat source to make a ''solar pyrolysis unit'' for charcoal production
===Biochar as a method of carbon sequestration===
(for merged content from [[Biochar Technology]] page)
*Combine with solar thermal heat source to make a ''solar pyrolysis unit'' for charcoal production ==== Terra preta ====
[[Terra preta]] is a type of very dark, fertile anthropogenic soil found in the Amazon Basin. It is basically a mixture of charcoal, bone, and manure. It is very stable and remains in the soil for thousands of years.
=== Biochar Reactors ===
Several small-scale units have been devised for baking charcoal, many with simple common materials. Charcoal making ([[pyrolisis]]) dates back thousands of years in human history, traditionally practiced via earthen pits and mounds. Today, steel drums of different sizes are most commonly utilized due to portability, airflow control options, heat resistance, and availability. See articles below for some examples, and a new page here on [[Simple Biochar Kilns]].
=== Suitable feedstocks ===
*'''Other:''' leaf litter, grasses, macroalgae, bones (high P content),
=== Criticism ===
Critics are concerned that large-scale biochar production may increase deforestation. However, a variety of biomass feedstocks other than wood can be used (see above). Old-growth forest is likely not a good feedstock because of extensive pre-processing that would be required. Small biomass pieces such as pellets or cherry pits make excellent feedstock.
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