French team create machine that converts plastic to fuel

Christopher Cost invented a low-tech machine, Chris Alice, to convert plastic into fuel, aiming to reduce pollution. The machine processes plastic pellets at 40.5°C, producing diesel, gasoline, and carbon residue usable in crayons. It efficiently converts one kilo of plastic into one liter of fuel, divided into diesel and petrol.

What is one of the byproducts of the plastic conversion process?

How much plastic can the machine convert into fuel?