I was picking up my asian food waste oil last night and the guy that runs the kitchen walked out to greet me. I politely asked that they stop "occassionally" putting 1.5 gallons of water and soggy crumbs in my waste oil barrel.
80% of the time: I get really clear dark golden waste oil that smells great with a small amount of crispy chunks at the bottom (soon to be great smelling bio-diesel) [img]/ubbthreads/images/graemlins/laugh.gif[/img] [img]/ubbthreads/images/graemlins/laugh.gif[/img]
20% of the time: I get a watery milkshake with a ton of soggy bread junk floating on top and at the bottom [img]/ubbthreads/images/graemlins/bleh.gif[/img]
Last night I said, "please no water...just oil". He said, "OK, just oil...no water". I hope this clears it up.
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I was picking up my asian food waste oil last night and the guy that runs the kitchen walked out to greet me. I politely asked that they stop "occassionally" putting 1.5 gallons of water and soggy crumbs in my waste oil barrel.
80% of the time: I get really clear dark golden waste oil that smells great with a small amount of crispy chunks at the bottom (soon to be great smelling bio-diesel) [img]/ubbthreads/images/graemlins/laugh.gif[/img] [img]/ubbthreads/images/graemlins/laugh.gif[/img]
20% of the time: I get a watery milkshake with a ton of soggy bread junk floating on top and at the bottom [img]/ubbthreads/images/graemlins/bleh.gif[/img]
Last night I said, "please no water...just oil". He said, "OK, just oil...no water". I hope this clears it up.
Yeah I was pleasantly surprised at how easy it was to negotiate and work with the restaurants. My neighbor and I collected 70 gallons the other day.. One of the owners has two restaurants.. He basically said.. you bring me a drum and I'll let you have the oil. At his other restaurant the barrel was pretty full but it did have a lot of crud on the bottom. After we sucked the oil the restaurant workers went right to work scooping out all the crud from the bottom! I'm probably going to provide them with a couple 55 gallon strainers from US Plastic. I'm glad I know a little Mandarin and a little Cantonese! It's made for some interesting conversation!
They did it again [img]/ubbthreads/images/graemlins/mad.gif[/img]
Instead of my 4-5 gallons of water-free and clear waste oil, I got orange milkshake oil [img]/ubbthreads/images/graemlins/mad.gif[/img] [img]/ubbthreads/images/graemlins/frown.gif[/img] [img]/ubbthreads/images/graemlins/crazy.gif[/img] [img]/ubbthreads/images/graemlins/vomit.gif[/img] I guess the problem is that they no longer have a waste bin, besides mine.
What can I do with this stuff? It isn't at all easy to settle out the water and soggy bread stuff. Now I have 20-25 gallons of this junk.
Aww man.. that sucks, Hugh. That was one of my fears today when I went to check on a drum we left at a Chinese restaurant. I asked the owner in my kindergarten level Cantonese and he did say they don't put water in there but at the same time he's not the one emptying the fryers. So far the oil has been good. I was even able to talk to the owner of a Morrocan restaurant next door and he said he would change from partially hydrogenated to straight soybean oil! If you were down here I'd definitely share the stuff! Right now I share it with a neighbor.
i just leave the render's can and they throw the junk in it and give me the 5 gal cans of oil. i stopped at the other place in town and asked what he did with his and asked you want it? he does not use water to clean or any chem. he uses the oil to clean with and changes once every 5 days. score another 15gal every 5 days!!
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Remember, we aren't eating this stuff, we're turning it into diesel fuel. Your truck only cares about viscosity, acidity, and BTUs. Nothing else. -unknown?
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NC State law defines biodiesel as ''any fuel or mixture of fuels derived in whole or in part from agricultural products or animal fats or wastes from these products or fats.''
The new legislation passed here in California, while requiring a $1 million insurance bond or coverage for the collecting vehicle as well as registration as a renderer (nothing new there) also requires that non-edible kitchen grease (what we want) be handled seperately from interceptor grease (trap grease)which is likely what you folks are describing. I currently have two of my 55 gallon drums half full of trap crap. I don't know what to do with it. I will ask the manager to stop but he canceled his contract with the rendering company to give it to me. If I tell him that I will stop if then maybe things will change. There were WHOLE FISH in the crap, pieces of meat, plastic wrap, rubber gloves. Pumps work great with plastic wrap tiede around the impeller!!!
I know that the renderers have likely hiked their rates in response because they have to have seperate trucks or take seperate trips to collect both now. This may make it easier for us to collect grease for free [img]/ubbthreads/images/graemlins/ooo.gif[/img]
Also I have found that some of this white glop is simply hydrogenated oils reacting to the drops in temp. I heated some up and a lot of it cleared up.
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2000 F-250 Super Cab Longbed
Bright red, they call me "Clifford"
so they did pass it? wow i'm glad i live on the right coast and in small towns too, i'm going to our county board and seek premission to collect waste fryer oil at the county trash sites.
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Quote:
Remember, we aren't eating this stuff, we're turning it into diesel fuel. Your truck only cares about viscosity, acidity, and BTUs. Nothing else. -unknown?
Quote:
NC State law defines biodiesel as ''any fuel or mixture of fuels derived in whole or in part from agricultural products or animal fats or wastes from these products or fats.''
At this time, what I plan to do is make bio-diesel with the good clean clear waste oil (enough for three batches at this time) and then later make a batch from the other oil after I settle and filter it and then heat it in the processor to drive off the extra water and then use KOH for sure for that batch.
Not all bad
--Hugh
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1991 F250 XLT, 2WD, 7.3L IDI, 5 speed, 168K.
What I told Hugh today is that when you're stuck with visible free water, it'll settle, but check that the oil itself isnt 'wet' also. www.biodieselcommunity.org/testingoilforwater tells you how to check.
THen, if it's still wet, I suggested the following:
water will settle out quicker if the settling tank stays warm. I suggested he put it in the processor, turn down the thermostat, and turn on the heat for 24 hours with the thermostat on "low" and the vent open and piped to the outside in case it steams. After 24 hours drain off whatever's settled to the bottom that resembles water, or maybe be prepared to see some oil in the bottom fraction that's more 'wet' than the rest of the oil (ie keep trying the www.biodieselcommunity.org/testingoilforwater test till you see a difference).
This is a simplified version of how Dana Linscott tells you to dewater, I think he also found that filtering first helps with this settling process. I haven't done it very much myself because I had free electricity for a while and just did 'boil the water away' method . However I"ve seen others do something like what I'm suggesting and it seemed to work really well.
Mark
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Homebrew biodiesel crazy:
...several years with a couple of different 6.9's... now running a (gasp!)1998 GMC 6.5 van... don't shoot me.
and of course, check the temperature before adding methoxide to the same oil- if you dewatered at a higher temp than normal processing it could be a dangerous mistake to add methanol right away (ie let the oil cool down to below 140F first
Mark
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Homebrew biodiesel crazy:
...several years with a couple of different 6.9's... now running a (gasp!)1998 GMC 6.5 van... don't shoot me.
I have had success heating the oil and running it in my finished biodiesel washing "mode". That is pumped through a shower head with extra holes drilled in it.
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2000 F-250 Super Cab Longbed
Bright red, they call me "Clifford"
It would probably be safest to heat it for a long while 12-24 hours, then let it fully cool, then warm it up again to reaction temp for processing. Boiling methanol does not appeal to me [img]/ubbthreads/images/graemlins/bleh.gif[/img]
Thanks for the advice G_Mark and others too,
Hugh
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1991 F250 XLT, 2WD, 7.3L IDI, 5 speed, 168K.
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There were WHOLE FISH in the crap, pieces of meat, plastic wrap, rubber gloves. Pumps work great with plastic wrap tiede around the impeller!!!
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Sounds like one of my sources. I made some improvised strainers to fit in the funnels in my collection drums. For the screen I used the metal screen you can put over rain gutters and wired it together. The frame is from old tomato cages welded to the shape I want. Before that I had chicken bones, cups, ribs, cigarette butts, you name it. About 1/5th of the barrel was waste. Now I can pump it easy but they had dumped about 10 gallons of water in last time I was there [img]/ubbthreads/images/graemlins/rolleyes.gif[/img] They denied putting the water in but it's in a covered location with a lid too. Plus they had dumped all the grill grease in instead of keeping it separate as we had arranged. Some places are a never ending source of hassles...
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