Introduction: Paper + Grass Clippings Fuel Briquettes

Picture of Paper + Grass Clippings Fuel Briquettes

This instructable is third in these series, and I recommend to go the first one for more detailed information on these projects:

Paper + Wood Shavings Fuel Briquettes

In the second instructable I'm showing how I made fuel briquettes using combination of paper and sunflower seed husk:

Paper + Sunflower Seed Husk Fuel Briquettes

Step 1:

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This time I want to show how I made fuel briquettes using dryed grass clippings as an additive.

Usually I use this grass for mulching my crops, so either way, it's a usefull stuff.

Anyway, when the lawn mower is done with it's job, I'm transferring the the grass into those mesh bags, vegetables are usually sold in. I'm layng them then on a sunny place and flipping around a couple times a day untill till they're dry. It tooks up to a few days.

Step 2:

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I already have my paper soked for a few days.

This time I used white paper, mostly from my old school exercise books and office papers. Despite my expectations this was the type of paper that turned into pulp much easyer than corrugated cardboard and newspaper I used earlier. But this really makes sense if to think abot it: a lot of clay is added to this sort of paper to make it white and uniform opposing to more cheep one, where there's only fibers intertwined together.

Step 3:

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I've already told abot the set up and tools I'm using.

So I'm adding dryed grass to the paper mash and mixing it all together.

I'm basicaly eyeballing the proportions till it feels right.

Step 4:

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I'm transferring the mix into bucket which alowes me to use scoop for filling the press container in controlled (more or less) way.

Step 5:

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I'm gradually compressing the mix in the press letting the water to escape. ANd when I fell I'm done. I'm releasiing the briquette from the container.

At this point it looks like some fansy cheese I'd probably try to eat if it was cheese indeed.

Step 6:

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But it's not, so I'm laying it to gry on a sunny spot for one-two weeks.

On the back are results of my previous experiments.

Step 7:

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The remains of the mix that are to small for another briquette are going back into barrel to be mixed with the next batch later.

This is it for now, hope it was informative, thanks for your attention and have a nice lawn.

Comments

tobawolf (author)2017-08-14

Nice for recycling waste, great idea.

How much smoke does this produce when burning?

ironsmiter (author)tobawolf2017-08-14

should not be too much smoke, once it is burning, but there will be a fair bit of ash. And lighting it off will probably take a small starter fire. I would say, every other piece of fuel you put on could be one of these.

When I make smaller logs, I like to mix in a finely ground up old candle. For "starters", I also dip the logs in hot liquid wax for a few seconds. Just that extra bit of wax/paraffin makes a HUGE difference in burn quality.

Old coffee grounds mixed in also make for a wonderful smelling fire, IMO :-)

Waldemar Sha (author)tobawolf2017-08-14

I don't know. They're still drying.

Lorddrake (author)2017-08-14

When the briquette is dry, will you be test burning them and posting the results?

I am very interested in how the different mixtures perform.

burn time

smoke production

ease/difficulty of lighting/maintaining a burn

So far (aside from my first batch of briquettes that had cardboard in the mix) I have only used junk mail and scrap paper from the office and my kids old schoolwork to make briquettes.

I have yet to try them by themselves in the firebowl. I usually use them to augment an existing fire made from the woodpile.

I know one of your batches used sunflower seed husks. Would peanut shells work also?

Waldemar Sha (author)Lorddrake2017-08-14

I think, to test the briquettes woul'd be a right thing to do, but I don't think the information about burn time, ease of lighting, etc, would be relevant for you, because I don't use exact proportions and I can't guarantee you'll achieve the same density with your press which, I imagine, is also important. Maybe just to get the rough idea...

Earlyer I tryed to burn a smaller chunk of paper-sawdust briquette. It really doesn't want to burn by itself (and I saw similar results on some youtube videos), so I think, augmenting the existing fire is the main way to use them.

I can't tell about peanut shells. Where I live peanuts are sold already dehusked, so I'm not able to get hold of substential ammount of shells for experiments. Exept, maybe, for when I start growing my own.

I've also being thinking of using pistachio nut shells. They're small enough to be mixed with paper mash uniformly and don't get on a way when compressing. But pistachio nuts are pretty expensive where I live, so we don't consume them very often.

On the other hand we have walnuts growing all over the place. You won't even find them in supermarkets because it makes no sense to sell them: you can go outside and just gather as much as you want like in 30 meters from your house. When I was smaller my grandma used walnut shells as a fuel just by shoveling them into burning stove with a scoop. I imagine, to be implemented in briquettes they have to be crushed into smaller grit first.

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