Stop throwing coffee dregs (sediments) off the pipe.
The Journal of Agricultural and Food Chemistry, an American well-known chemistry magazine, claims that spent coffee grounds can turn into biodiesel thanks to its oil. If you want to read the original before continuing click here.
Just as it happened years ago with Colza and soy oils, new ways of producing biodiesel are being sought. Thanks to coffee lots of money and energy would not be wasted providing we start keeping its dregs at home. I wonder if ColaCao ones would also work.
The main problem could be the logistics. As well as oil recycling is becoming a normal activity, coffee recycling (reconverting) could also be included as such in our daily lives.
To be honest, it is very unlikely to see this technology in the near future. We all know that sometimes can be pretty tiring, but we are talking about figures with a considerable number of zeros.
Students from Tecnun, take on board the idea of keeping the coffee wastes. You can collect thousands of tones.
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For those who don't know what a Trasesterification consists of (including me) I provide you with one link to Wikipedia about this: http://en.wikipedia.org/wiki/Transesterification
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