This is a thought experiment with real/physical world application.

Degrowth transitioning to a circular regrowth bioeconomy? Sustainable adaptation? Carbon negative survival?

A primary or backup survival system using biochar for Carbon Removal in a Cascade of Uses (CRCU).

More for your biochar! A simple green philosophy for survival essentials in a stationary or even semi-nomadic scenario eg. bush shack, love shack, AirBnB, Tiny house, remote villages and communities, refugee camps (war, climate change, disease etc.). We're 'just' people in the end with human needs. This can change the game.

Parts (base to top):

• old BBQ cast iron plate for additional thermal mass and heat radiation at base
• 50L stainless steel stockpot for heat shield and water quench collection
• 300mm x 900mm galvanised steel chimney flue
• 304 woven mesh top, 1.6mm thick with 5mm aperture grinded to a square (pan/pot/bucket stability, even flame distribution and heat radiation)
• standard steel wok ring (pot stand and flame distributor/concentrator)
• 20L stainless steel bucket (water boiling/pasteurisation)

Tech notes

• TLUD (Navigator Stove mainframe)
• Batch pyrolysis
• Chopped wood, stick or pellet feedstock
• Water quench

Applications

• At the off-grid household/bush shack/hempcrete cabin (primary) or grid connected household (backup)
• Cooking
• WASH
• Biochar
• • Boil the water (kills pathogens)  then filter with Biochar (removes POPs and other nasties)->Permafilter 20L->spent biochar->
  • Bokashi and biochar dual toilet system (1- urine/liquid (add biochar), 2 - poo/solids (add bokashi and biochar) ->Nitrogen doped (urine) biochar (1) + fermented humanure (2)->added to outdoor composting system eg.plus more bokashi and biochar, liquid sea kelp plus additional Carbon and Nitrogen biomass sources->growing systems eg.wicking->food and medicine
  • a key barter. Scale up and there's the Biochar Carbon Removal credit option with various Carbon Removal Marketplace platforms and dMRV systems to choose from

Operation

• needs to be tested

Built with 2 x 20 Litre food grade plastic buckets with lids (which may or may not be BPA free). Water is added to the top bucket and filtered via gravity though stones eg.scoria ->unmilled biochar->medium milled biochar->finely milled biochar->cheesecloth->dripped through a drilled hole pattern within a bottom central and circular footprint. This drilled area matches the diameter of a single hole sawed into the lid of the bottom bucket.  In my system, it takes about 45 minutes for filtration. This time will vary from system to system.