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Permies likes wood burning stoves and the farmer likes HOW TO MAKE DUCKWEED PELLETS for RMH? permies
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Karen Crane

Joined: May 03, 2011
Posts: 157
I like the idea of the rocketr heater and am toying with the idea of burning
duckweed instead of wood as it is sustainable, easy and cheap to grow
and dry ( solar dryer)
I have been told by people of this forum that I need to make the
duckweed into pellets in order to burn it.
How do you make the duckweed into pellets??
Tyler Ludens

Joined: Jun 25, 2010
Posts: 5723
Location: Central Texas USA Latitude 30 Zone 8
Karen Crane wrote:
How do you make the duckweed into pellets??

That's probably the not-cheap part of the equation, some kind of pelletizing equipment which would need to be motorized (what power source?) or hand operated (wow, the calories you'll expend!).

Link I just found:

Idle dreamer

Lloyd George

Joined: Jan 25, 2012
Posts: 159
pellet mills are stupid expensive...and/or difficult to build....think biomass briquettes..
Saybian Morgan

Joined: Apr 22, 2011
Posts: 582
Location: Lower Mainland British Columbia Canada Zone 8a/ Manchester Jamaica
Pellet mills arn't stupid expensive for what your asking them to do, the smallest pellet mill you can get is about 2 grand and can do allot, there's no manual way to make pellets unless your an android with super strength.
The fastest most reasonable way to go is pressing them into pucks, with either a bottle jack hydrological press or one of those compound level presses. The compound lever press is faster I got sick of pumping the bottle jack it took me up to 5 minutes start to finish to press a puck that only burnt for 45 minutes, and it was very messy working with the slurry format required to get compactions. The compound lever system is just 1 or two single pulls and then you can discharge with the same compound pressure rather than having to bang the holding cylinder against another discharge cylinder.
Ken Peavey

Joined: Dec 21, 2009
Posts: 2523
Location: FL
The pellet mills look pretty handy, can produce feed or fuel pellets, depending on the material put into the machine. I've looked at the pellet mill as a potential income source, does not work me. I've seen small pellet mills in the $700-$1k range. When a sack of feed runs $15-20, it would take a few years to break even-I only use purchased feed for the hens during the winter if there is nothing to forage. The direction I'm heading in is to grow frost hardy greens to supplement the hens, plus milo and other grains for a scratch feed mix.

I've also looked at the briquette press. Being it requires no fuel to operate, building one is on my To Do list. I'm looking at leaves as a major ingredient for use as a fuel in the woodstove.

Seed the Mind, Harvest Ideas.
Saybian Morgan

Joined: Apr 22, 2011
Posts: 582
Location: Lower Mainland British Columbia Canada Zone 8a/ Manchester Jamaica
I don't pellet mills would ever pay off if all one was doing was matching the contents of purchasable feed. It's pays off when what you can feed goes up, not everything can be turned into a powdered mash but allot can go into a pellet without waste. I wouldn't do it just for poultry or for fuel but once you start tilting towards rabbits and larger ruminants you start to cover enough ground that being able to hammer mill and pelletize starts to go way above and beyond the ingredients available in store feed. I don't want to eat meat made of chicken scratch if I can afford it, and I can't afford to buy someone else organic anything they way they make it seem impossible to be organic without shoveling shit uphill. Hammer milling is like predigesting and theres allot we can happily digest with a little help without life becoming processed cheese. The ducks get on fine with the entire Jerusalem artichoke plant ground up and pelleted where normally only the teeth of ruminants could tackle it. If you can chop it and they'll eat it go for it! if you can slurry it and press it burn it. But theres allot that wont take the right shape without horsepower and dollars. those fuel pucks just don't heat a house but a bag of pellets can and do.
I wish I could grow duck weed but I have ducks that won't let it grow, I can't imagine having enough duckweed to get a bag of pellets out of it.