The pyrolysis of urban forest and green waste to produce biochar is based on system used in Stockholm, and the utilisation of biochar is key to how the project can be further intergrated into urban ecosystem allowing urban horticulture to beocme a component of improved urban ecosystem that is also community orientated where a cafe/food outlet derives 80% of produce form local growers...the biochar is used to reduce/prevent PAH, VOC & heavy metals entering food chain so the role of green walls, roofs and conversion of brownfield & deralic land to alotments becomes viable.
Is this sort of project feesable and has any one worked on the development of not for profit community horticultural projects of this nature.
Thank-you
I do not know about locking up of organic pollutants using biochar, but the literature on the analogous process for heavy metals is contestable because many studies fail to discriminate between the effect of sorption and increased pH caused by biochar amendments. Thisis important as one effect is likelt to have a much longer life than the other.
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