Caffeinated Diesel*Update* FAIL

blake1827 · **Posted:** Wed Jan 28, 2009 2:31 pm

http://www.physorg.com/news148149549.html

Just another delicious source of fuel... When can the Starbucks drive thru gimme a Tall Latte and a gallon of Bio? I know they give the grounds away now for gardens but I think you'd need a olive oil press, and eliminating the H2O could be cost prohibitive

"Spent coffee grounds contain between 11 and 20 percent oil by weight. That's about as much as traditional biodiesel feedstocks such as rapeseed, palm, and soybean oil."

"The resulting coffee-based fuel — which actually smells like java — had a major advantage in being more stable than traditional biodiesel due to coffee's high antioxidant content, the researchers say. Solids left over from the conversion can be converted to ethanol or used as compost, the report notes."

looks like someones trying:
http://desertbiofuels.blogspot.com/2009/01/coffee-diesel.html

I read another article I can't find @ the moment that the "rejected" beans from growers would also be a suitable resource in those countrys.

gmctd · **Posted:** Wed Jan 28, 2009 3:24 pm

Thanks, yes, cream and two sugars, please........................

dog_party · **Posted:** Wed Jan 28, 2009 4:58 pm

Man, don't tell my wife about this. I HATE HATE HATE the smell of coffee. I want to run the CRD on bacon grease. Now that smell I could live with all the time.

Sir Sam · **Posted:** Wed Jan 28, 2009 6:05 pm

blake1827 wrote:

http://www.physorg.com/news148149549.html

Just another delicious source of fuel... When can the Starbucks drive thru gimme a Tall Latte and a gallon of Bio? I know they give the grounds away now for gardens but I think you'd need a olive oil press, and eliminating the H2O could be cost prohibitive

"Spent coffee grounds contain between 11 and 20 percent oil by weight. That's about as much as traditional biodiesel feedstocks such as rapeseed, palm, and soybean oil."

"The resulting coffee-based fuel — which actually smells like java — had a major advantage in being more stable than traditional biodiesel due to coffee's high antioxidant content, the researchers say. Solids left over from the conversion can be converted to ethanol or used as compost, the report notes."

looks like someones trying:
http://desertbiofuels.blogspot.com/2009/01/coffee-diesel.html

I read another article I can't find @ the moment that the "rejected" beans from growers would also be a suitable resource in those countrys.

Hehehehehe......

dog_party wrote:

Man, don't tell my wife about this. I HATE HATE HATE the smell of coffee. I want to run the CRD on bacon grease. Now that smell I could live with all the time.

I hate the smell too, smells like burning bad.

I wanna run my CRD on pecan oil....I think that would smell yummi.

dgeist · **Posted:** Wed Jan 28, 2009 6:14 pm

I'm just imagining stopping in the morning for a grande with-whip mocha and a side of 40 pounds of grounds.... Actually, how hard is the oil separation?

nursecosmo · **Posted:** Wed Jan 28, 2009 10:41 pm

The best smell that ever came out of my tail pipe was from coconut oil which I ran at about 25% a couple of summers ago.

Why no ocifer, I hraven't been dinking any hic...any hic...any hic, pina coladas.

Diggerfreek · **Posted:** Thu Jan 29, 2009 12:15 am

I love it when a truck runs buy that is running bio made with grease from french fries

nursecosmo · **Posted:** Thu Jan 29, 2009 12:25 am

Diggerfreek wrote:

I love it when a truck runs buy that is running bio made with grease from french fries

If the Biodiesel still smells like the French fry oil it was made from, it was a very poor conversion. Properly converted Bio smells like Bio only. That being said, I intentionally under reacted a few batches of coconut oil BD just for the aroma, but nothing can compare to the smell of straight oil.

Diggerfreek · **Posted:** Thu Jan 29, 2009 12:57 am

nursecosmo wrote:

Diggerfreek wrote:

I love it when a truck runs buy that is running bio made with grease from french fries

If the Biodiesel still smells like the French fry oil it was made from, it was a very poor conversion. Properly converted Bio smells like Bio only. That being said, I intentionally under reacted a few batches of coconut oil BD just for the aroma, but nothing can compare to the smell of straight oil.

I learned something new tonight

ATXKJ · **Posted:** Thu Jan 29, 2009 1:21 pm

If you get Willie Nelson's BioDiesel - they don't really know what the bio part is -
but the drivers behind you get a lot calmer & mellow out -

dog_party · **Posted:** Thu Jan 29, 2009 1:26 pm

ATXKJ wrote:

If you get Willie Nelson's BioDiesel - they don't really know what the bio part is -
but the drivers behind you get a lot calmer & mellow out -

dgeist · **Posted:** Thu Jan 29, 2009 3:00 pm

ATXKJ wrote:

If you get Willie Nelson's BioDiesel - they don't really know what the bio part is -
but the drivers behind you get a lot calmer & mellow out -

Willie's not too far off:
http://current.com/items/89567721/hemp_could_be_the_next_biofuel_feedstock.htm
:wink:

warp2diesel · **Posted:** Thu Jan 29, 2009 4:09 pm

Coffee was evil until Starbucks started selling it for $4 a cup, Now, Starbucks is a green company that even the Dead Tree Hugging Pine Bark Petting Idiots LOVE.

So, if our exhaust smelled like Starbucks, our Diesels would suddenly be the Savior of the Environment and even the Great Political Messiah who just moved into a rent free house in Washington DC would order his Limo be converted to a Green Technology Common Rail Diesel (like the New Cummins) along with all the other Secret Service SUVs :lol:

Think of what this would do for Chrysler and the rest of the car industry :!:

Starbucks should invest in Coffee Bio Jet fuel for their private jet as well :roll:

nursecosmo · **Posted:** Thu Jan 29, 2009 4:15 pm

warp2diesel wrote:

Coffee was evil until Starbucks started selling it for $4 a cup, Now, Starbucks is a green company that even the Dead Tree Hugging Pine Bark Petting Idiots LOVE.

So, if our exhaust smelled like Starbucks, our Diesels would suddenly be the Savior of the Environment and even the Great Political Messiah who just moved into a rent free house in Washington DC would order his Limo be converted to a Green Technology Common Rail Diesel (like the New Cummins) along with all the other Secret Service SUVs :lol:

Think of what this would do for Chrysler and the rest of the car industry :!:

Starbucks should invest in Coffee Bio Jet fuel for their private jet as well :roll:

seems like sound logic to me.

blake1827 · **Posted:** Wed Mar 04, 2009 9:02 pm

so I followed up on the folks in AZ that were gonna try this and it failed miserably. http://desertbiofuels.blogspot.com/2009/01/coffee-diesel-update.html

"To get 15ml of coffee oil Ken lost 70ml of hexane during the extraction process (he recovered 230ml). Since hexane costs about $16 a gallon, plus shipping and hazmat fees, we probably aren't looking at a new feedstock for biodiesel! A lot of the hexane lost was residue in the coffee grounds that evaporated out when the grounds were dried, after extracting the oil. Residual hexane in the coffee oil also reduced the final amount of coffee oil."

DarbyWalters · **Posted:** Wed Mar 04, 2009 11:48 pm

The ones that smell like fries are usually straight WVO and not biodiesel...

geordi · **Posted:** Thu Mar 05, 2009 1:02 am

nursecosmo wrote:

Diggerfreek wrote:

I love it when a truck runs buy that is running bio made with grease from french fries

If the Biodiesel still smells like the French fry oil it was made from, it was a very poor conversion. Properly converted Bio smells like Bio only. That being said, I intentionally under reacted a few batches of coconut oil BD just for the aroma, but nothing can compare to the smell of straight oil.

Yea, x2 on that. People on the TDIclub always made noise about how my reactions couldn't POSSIBLY be completing properly, b/c I was running about a 12% methanol mix on triple-filtered waste oil... But my product never smelled of anything other than biodiesel, same for the exhaust.

They also insisted that I would have LOTS of algae problems or soap problems b/c I didn't add water to remove the water in the biodiesel. (Don't ask, it's anti-logic) But... I have multiple bottles sample bottles that are STILL perfectly clear after about 5 years sitting in an uninsulated garage in Florida. One of those samples is even UNCAPPED for all this time.

One of these days I should get back to biodiesel brewing.

warp2diesel · **Posted:** Sat Mar 07, 2009 7:40 pm

blake1827 wrote:

so I followed up on the folks in AZ that were gonna try this and it failed miserably. http://desertbiofuels.blogspot.com/2009/01/coffee-diesel-update.html

"To get 15ml of coffee oil Ken lost 70ml of hexane during the extraction process (he recovered 230ml). Since hexane costs about $16 a gallon, plus shipping and hazmat fees, we probably aren't looking at a new feedstock for biodiesel! A lot of the hexane lost was residue in the coffee grounds that evaporated out when the grounds were dried, after extracting the oil. Residual hexane in the coffee oil also reduced the final amount of coffee oil."

Would an industrial screw press work instead of using solvents :?:

geordi · **Posted:** Sun Mar 08, 2009 1:51 am

Too likely to succeed. You have to use all sorts of magical profit-sucking chemicals to make it impossible to compete with drilled oil... Cuz that is obviously the ONLY solution that could ever be plausible. *SARCASM!*

kdlewis1975 · **Posted:** Sun Mar 08, 2009 2:33 am

Use of the press would be a possibility, but one may not recover as much oil or may get extra stuff that wasn't removed when the coffee was brewed.

There's nothing magical about hexanes. The advantage of using a hydrocarbon is that it's going to extract predominately the oil and leave the unwanted stuff behind. There are things he could do to minimize the loss of the hexanes. A good start wouldn't be to use vacuum in that final distillation step. It increases the rate of removal, but then adds difficulty in capturing all of the hexanes. A better chilling system for the condenser would help too, though it already appeared as if he was using ice water. Rather than having the Soxhlet extractor open to the atmosphere, keeping it under a static atmosphere of nitrogen via a bubbler would help some too. Since it looks like he's working in his kitchen, he's probably limited on the things he could try.

One could use petroleum ether (also known as ligroine) which should be cheaper. There are systems that will lead to a very high recovery of solvent, but that's not until this is being done on a much larger scale.

Caffeinated DieselUpdate FAIL

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