Much richness in the terrapreta.bioenergylists.
They have posts on charcoal-making and using it for mulch including:
>>
Robert Flanagan's Biochar Stove: Carbon Negative Cooking
October 30, 2007
[Didn't mention emissions, but gotta be better than current cooking processes...]
http://terrapreta.bioenergylists.org/terrabiocharstove
...a tabletop charcoal-maker, which also is a single-burner cookstove. Now, climate-conscious housewives can proudly have a carbon negative kitchen to capture carbon with every meal and pot of tea. A wide variety of fibrous organic matter—cornstalks, nut shells, bamboo, wood chips, straw—can be stacked in the box, then ignited at the burner. The stove can be reloaded with more fuel to use for cooking as long as needed. A recent demonstration of the stove with corncobs ran for 25 minutes and boiled 10 liters of water before charcoal remaining was taken out.
>>
Charcoal mulch worked better than clear polythene
http://terrapreta.bioenergylists.org/rhscharmulch
...prairie grass establishment by direct sowing is possible in the south of England, especially when soil temperature is elevated by either charcoal or clear polythene mulching. Overall the charcoal treatment was most successful as this mulch also reduced weed cover early in the first half of the summer.
Rael
Rael Bassan
Chicago Coordinator
2007 Urban Ecovillage Gathering Committee
1020 W. Lawrence Ave. #1216
Chicago, IL, USA, 60640-6535
773-756-5033
http://ecovillagingchicagoland.blogspot.com/
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