The big problem with plastic is that it takes many years to decompose in nature, and that current means of recycling are slow, expensive and often polluting.
Partly because of these causes and partly because of human neglect, only 15% of the plastics we use are recycled and the rest is incinerated (generates pollution) or is thrown away and ends up in the seas (more pollution).
A French company called Carbios has generated a process of enzymes that are capable of decomposing PET (it is the most used plastic and with which most bottles are made) in a short time between 10 and 16 hours. This is something new and very different from current solutions.
The plastic bottles are ground and placed in a container. Enzymes are applied to them and in a few hours they break down into other reusable by-products (terephthalic acid and ethylene glycol).
And from these by-products obtained, new PET bottles can be re-manufactured, reducing greenhouse gases by more than 30%.
The Carbios test reactor has a size of 20 cubic meters and 100,000 bottles can be treated at a time, and once the technical feasibility has been demonstrated they think about implementing larger industrial means to treat a greater number of bottles and lower costs.
Carbios is a company that was founded in 2011 and it has taken them 10 years of work and effort to achieve these positive results. Things don't happen by chance, but after hard work.
Carbios' product is twice as expensive as virgin PERT (from oil), but it can be affordable by large manufacturers (it costs just over 2 cents a bottle) to reduce the carbon footprint.
And in fact some brand like Nestlé has already carried out tests with their bottles.
It is a matter of customers (us) making themselves understand and demanding that we want to have products that do not pollute our environment.
EN 
ES