jk_villadiego asked: We are making a bio diesel and we have to test it. We have a grass trimmer here but I don’t know how to test it. Do we pour the whole biodiesel so it’s the pure thing working on the engine? But I heard it only need around 20% of the bio diesel to mix with something? :/ Help! Please.
Thank you!
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Uh You need a diesel engine. All the grass trimmers I know of are 2 stroke gasoline spark ignition engines, they are not compatible with diesel fuel.
I have never seen a diesel grass trimmer..
You must be sure you are putting it in a diesel engine.
First you need a diesel engine. A string trimmer or something of that nature is not going to be a diesel engine. Your best bet is to find a diesel car or truck or a small generator that runs on diesel.
You can run pure biodiesel in some engines. The typical blend is about 20% at the gas station to reduce price and emissions. Some people who make their own biodiesel run up to 100% biodiesel in their vehicles without a problem. If you cannot find a diesel engine that you feel safe testing on, you can always just try and ignite the biodiesel in an open metal or glass container.
Let me start off by saying we (Agua-Luna) are a non-profit organization that live, promote & teach 100% “off grid” living & complete self sufficiency”. To give you an idea of this, we typically don’t leave the Ranch but once or twice a year.
The 1 Bio truck we do currently run on Biodiesel is a 1999 Dodge truck (we have 1 the runs 100% on water, 2 EVs & 1 running on Ethanol). But all Cummins engines were modified from the factory to run on BioD since around 1992 without any modification.
Biofuel is recognized by both the US Environmental Protection Agency & Department of Energy as an alternative fuel, & qualifies for mandated programs under the Clean Air Act Amendments & the Environmental Protection Act of 1992 (EPAct).
USDA Clears Air with Biofuel: Buses & other diesel-burning vehicles run cleaner if they mix biofuel with regular diesel fuel, said the US Department of Agriculture at a biofuel fuel seminar at a USDA research center.
Conversely most major automotive manufacturers (Chrysler, Ford, & General Motors, etc) recommend the use of bio fuels, & nearly every car manufacturer in the world approves ethanol blends in their warranty coverage.
In fact you’re probably even driving a Flex Fuel car & didn’t even know it.
The trick is finding fuel.
I’ve been producing biofuel for about 8 years now, it’s not extremely difficult. Basically you need general household ingredients, a processor (or still for ethanol) & some used oil. Blend it, let separate, screen & use. I complied a guide a while back to help walk you threw the process step by step, just email me or check out..
•1 liter of new vegetable oil, whatever the supermarket sells as cooking oil
•200 ml of methanol, 99+% pure
•lye catalyst — either potassium hydroxide (KOH) or sodium hydroxide (NaOH)
•blender or mini-processor
•scales accurate to 0.1 grams, preferably less — 0.01 grams is best
•measuring beakers for methanol & oil
•half-liter translucent white HDPE (#2 plastic) container with bung & screw-on cap
•2 funnels to fit the HDPE container
•2-litre PET bottle (water or soft-drinks bottle) for settling
•two 2-litre PET bottles for washing
•duct tape
•Thermometer
Use the “Methoxide the easy way” method — it’s also the safe way. Here’s how to do it.
Measure out 200 ml of methanol & pour it into the half-liter HDPE container via the funnel. Methanol also absorbs water from the atmosphere so do it quickly & replace the lid of the methanol container tightly. Don’t be too frightened of methanol, if you’re working at ordinary room temperature & you keep it at arm’s length you won’t be exposed to dangerous fumes.
Carefully add the lye to the HDPE container via the second funnel. Replace the bung & the ***** on the cap tightly.
Shake the container a few times — swirl it round rather than shaking it up & down. The mixture gets hot from the reaction. If you swirl it thoroughly for a minute or so five or six times over a period of time the lye will completely dissolve in the methanol, forming sodium methoxide or potassium methoxide. As soon as the liquid is clear with no undissolved particles you can begin the process.
The more you swirl the container the faster the lye will dissolve. With NaOH it can take from overnight to a few hours to as little as half-an-hour with lots of swirling (but don’t be impatient, wait for ALL the lye to dissolve). Mixing KOH is much faster; it dissolves in the methanol more easily than NaOH & can be ready for use in 10 minutes.
Using a blender. Use a spare blender you don’t need or get a cheap secondhand one — cheap because it might not last very long, but it will get you going until you build something better.
Check that the blender seals are in good order. Make sure all parts of the blender are clean & dry & that the blender components are tightly fitted.
Pre-heat the oil to 55 deg C (130 deg F) & pour it into the blender.
With the blender still switched off, carefully pour the prepared methoxide from the HDPE container into the oil.
Secure the blender lid tightly & switch on. Lower speeds should be enough. Blend for at least 20 minutes.
Using a mini-processor. Follow the instructions below & improvise where necessary — there are many ways of building a processor like this.
Proceed with processing as above, maintain temperature at 55 deg C (130 deg F), process for one hour.
yes its only about 20%. but some will work with pure biodiesel. like the earthracer, its a boat made by a guy from new zealand. it runs purely on biodiesel. its a cummins engine. it did circumnavigate the world for about 73 days with biodiesel. its amazing that u made it. please tell me how.