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| quote: Originally posted by Raften: When the resin is used up, how do you dispose of it?
Hi Raften. The manufacturers' literature says the spent resin can be disposed as a normal household waste in a local landfill. I think one should take that instruction "with a grain of salt". The spent resin must not contain any residual methanol. Also, the spent resin must not contain any free liquids. This would be any liquid, methanol, water, biodiesel. In general, landfills have three waste classifications that might apply: hazardous, special, and regular. I talked to my local landfill manager about amberlite. He agreed that if the resin contained no methanol and if it passed the "paint filter test" (no free liquids), then he would accept it as regular house hold waste. |
| Location: Illinois | Registered: February 21, 2006 |  
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| quote: Originally posted by Jeffwh26: Hows that for environmentally friendly???
Terrible! The oil will eventually migrate to the water that accumulates in the landfill. From there it will enter the water treatment system where it will be difficult to treat. Or, it will eventually migrate into the ground water. Used motor oils contain high concentrations of acids and heavy metals. The heavy metals are the bad actor. I will be surprised if the person spraying the oil has an OK from the regulatory authorities for the operation. |
| Location: Illinois | Registered: February 21, 2006 |  
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| quote: From there it will enter the water treatment system
We're not talking the water table here, right? because from what I understand, modern landfills have pretty strict regulations on sealing the base materials...x ft of clay, x ft of such and such dirt, layers of plastic, etc, etc. At least that's what the sanitation engineer I had a few classes with in college always explained. But if what they pull from the bottom of the pit is pumped to the wastewater treatment plant, then I can see what you're saying. |
| Location: Southern WI, USA | Registered: May 18, 2006 |  
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| quote: The less soap you feed the beads the better! The more soap the more contaminated they become! If you settle then most of the soap will go out with the glycerin and it will be fine.
Methanol, if you can, i would recomend gravity settle, then move the BD thru the beads with the methanol in it and then recover methanol after.(The concept here is that the beads will become exausted of methanol and let it pass thru, adsorbing the remaining impurities, keeping the biodiesel "thinner") If you like taking you methanol out before wash thats fine it will remove some residual methanol if you have any.
Although I agree whole heartedly with the first statement; I really don't think the second statement is a good practice. Most biodiesel that is settled will contain approximately 1.5-3.0% Methanol depending on how much methanol is used initially (more in the beginning means more in the end). Anyway with this amount of methanol typical soap and glycerin concentrations will range from 2500 to 10,000 ppm (depending on how long you settle). Glycerin and soap don't go below 1500 ppm with out significant methanol removal (they don't become immiscible until about 0.20%) therefore this method will exhaust a resin bed rapidly and could make it uneconomical for many potential users. Lastly, methanol in your resin beds creates one more flammability concern for it user and potential disposal hazards when exhausted. ABC Macro resin purification GC resultsPlease see these latest GC results from our recommended methodology using macroporous resin... This resin has been shown to successfully process up to 300 gallons per lb of resin. GCG |
| Location: Michigan | Registered: May 08, 2007 |  
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| quote: Originally posted by Biodiesel Systems: I have some 80...What are you looking for?
Dave, Screens have arrived. Many thanks to you for your concern, and help. Kind Regards, Paul |
| Location: Ohio | Registered: March 30, 2008 |  
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| Hey guys just a note I'd make sure that 210 micron mesh is sufficient - we are using 170 micron screen and this is as per their recommendations - I've seem other recommendations for 150 micron screen. Mesh to Micron It looks like 80 is 178 microns (should be ok) You might try doubling it up! But make sure the holes don't line up perfectly - rotate one screen approximately 45 deg. (not 90 or 180). Otherwise you may have resin finds in your biodiesel - we have seen a small amount of pass through but recommend using a simple whole house water filter prior to fuel tank. GCG |
| Location: Michigan | Registered: May 08, 2007 |  
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| quote: Originally posted by DryWashBiodiesel.com: Well they dont really give us a specific amount. Basically how it works is as follows: .
There should be a straightforward specification for the soap loading of the resin. That is so many lbs of soap per lb of resin at a given ppm soap in the finished BD. You should be able to tell us what that number is or at least a range. Without that number your cost estimates for treatment might not be meaningful for any giving situation. What is that number? Tx. Rick G. |
| Registered: March 23, 2004 |  
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