I have recently wondered what I should be doing with my used kitchen oils having seen a news article about an enormous fatberg clogging the sewer in London.
Obviously putting it down the sink really doesn't do anyone any good for the above reason. I've tried to look around online for answers and most articles suggest reusing it, taking it to a collection center, making soap or bird feed balls or just throwing it in the trash (in a container).
None of these feel like a real solution to me. Throwing it in the trash is obviously damaging for the environment, especially if you have put it in a plastic or other non-biodegradable container. Making bird feeds or soap is good and all but people don't have time for this and how much soap and bird feeds do you really need? I believe that after oils are taken to collection points, it is then processed into biodiesel which is also going to be bad for the environment in the long-run. Biodiesel produced from cooking oils does in fact produce 45-65% less greenhouse gas emissions than petrodiesel. This is great, don't get me wrong and I agree that this is probably the best option for now. It does however rely on you're local government providing this service or on you personally owning a diesel vehicle if you wanted to do some DIY production. In an age where electric cars seem to be the future, this really only seems like a stopgap solution as I envisage combustion engines will only decline in popularity as electric cars become more financially viable.
What I'm wondering is whether there is a scientific way to actually break the oil down into something that isn't damaging so that it no longer poses any sort of environmental threat. I've tried to have a look around for any information/research/products related to this but have found very little.
I have read that there are enzymes that can break down oils but would this be suitable in a residential environment? Perhaps not if it doesn't already exist as a solution? What would the reasons for this be?