Convert biodegradable household waste into biochar to enrich/improve garden soil quality.
1. the biochar kiln can be an add-on to normal bbqs - fill kiln up with waste and bury in fire when having a bbq. At the end of the bbq, hopefully content will be turned into biochar. However, this seems a bit inconvenient and infrequent usage means impact would be smaller.
2. Dedicated fireplace with a extra compartment for converting waste to biochar. Could work in colder climate where fireplace is used for long part of the year. However, must avoid toxic fumes from entering living areas.
3. Integrate biochar kiln with stovetop. Greatest potential. However, ventilation and extract of fumes essential.