Incidentally...The coffee 'puks' dropped out of an espresso machine are ultra-finely ground beans, and the resultant spent puks are quite dry, actually very dry in nature. Completely unlike brewed grounds, so if you are receiving mixed batches from a coffee shop, this will account for completely different results, each and every time you test.
After the grounds are pressed, the liquor is then separated chemically to gather oil? what would a small scale press for this material cost?? Nice to see American Machinery still Exists!
+Offgrid Carpenter My apologies for the late reply. I thought I was receiving notifications via email when a question was posted! Our spent coffee "energy" application generally involves dewatering the post-perculator coffee grounds and then feeding them into a boiler to burn as energy for the coffee processing plant. We also dewater fermented biomass for several customers doing cellulosic ethanol production (albeit primarily pilot plant and/or research at this point in time).
how much oil can be extracted from presseing the oil out of the coffe ground. And is the coffe ground then good enough for makinh biomass pellets. Oh, and is bio pressing the best way to extract oil from Coffe grounds ?
+CeasarCPH, The press does not extract oil from the grounds; the "biofuel" in this case is the dewatered coffee grounds, which are burned in a boiler to generate thermal energy. This Pressing News article describes the process: www.vincentcorp.com/content/biomass-burning-system
+VincentCorp1931 So I'm wrong to assume that by pouring Coffe Grounds to the machine, and then use the transesterification method could lead to biodiesel ?
+CeasarCPH Our coffee experience relates only to squeezing the water from the grounds to be used as boiler fuel. What you are suggesting would be a new application for our press. We're known for our willingness to try anything, so if you'd like us to run a quick test for you or would like to rent a press to try it yourself, contact us at vincent@vincentcorp.com or +1 813-248-2650. Ask for Bob.
@@CeasarCPH Did you happen to have any success with cold pressing spent coffee grounds for the extraction of coffee oil? Or perhaps @VincenCorp1931 did you acquire any more knowledge about cold pressing spent coffee grounds for not only extracting water but also oil with your machinery?
