I found this story regarding ongoing research of using bacteria to turn plastic into protein:
The team demonstrated that once the plastic is broken down by heat and a reactor, it can be fed to the bacteria. The microbes flourish on this meal. They keep growing as long as they have plastic to eat, producing more bacterial cells. Given that these cells are about 55 percent protein, once the plastic has been broken down, they can be dried down as a protein powder for later use.
The team hopes to find a way to make the process completely biological so that the plastic doesn’t need to go through heat and special chemical reactions to be broken down. It is possible that enzymes exist to help break down the plastic
Method That Turns Plastic Into Proteins Wins $1.2 Million Prize - iflscience.com
Do you think this will solve the problem of plastic pollution, at least in the long term? Will it be possible to produce proteins by this way in a large scale?