Engineering360: "Scientists turning plastic waste into jet fuel"

finally we are breaking down plastics... what impact has the exhaust ? cleaner than the commercial jet fuel used currently?

So you can produce good quality fuel and recycle the carbon, but what do you do with the melted plastic at the end of the process - can it be used to make anything useful or does it all go back into landfill - how much energy does the process consume and how much waste gas, etc. does this cause.

As with a lot of eco-friendly solutions to the plastic waste problem the process sounds very promising, but I feel the article skips over a lot of side issues which could result in other problems.