Skip to content
The Plastic Projects

Technology and Innovation

New plastic technology arrives with big promises. This page gives our honest read on what is working now, what is close, and what needs a harder look. Each technology in the list below shows how mature it is, who is doing it and what to watch.

Recycling that closes the loop

Better sorting comes first. Most plastic that could be recycled is lost because it is mixed up with other material. Near-infrared scanners, cameras and machine learning now identify each item on a conveyor and pick it out with air jets or robots. This is the least glamorous and most proven step: cleaner bales sell for more, and more material is recovered from the same trash. Digital watermarks, invisible codes printed across a label, go further by telling sorters whether a package held food, which is what food-grade recycling needs.

Purification keeps plastic as plastic. Solvent-based processes dissolve one type of plastic, strip out colour and contaminants, and recover the polymer without breaking it down, using far less energy than turning plastic back into oil.

Enzymes are real, and slower to scale than headlines suggest. Engineered enzymes can turn PET bottles, trays and polyester clothing back into building blocks for new plastic of virgin quality, including coloured and opaque items that mechanical recycling rejects. The science is proven. The first industrial plants are still securing finance, so expect years, not months.

Treat “advanced recycling” claims with care. Pyrolysis heats mixed plastic into oils. Much of that output has been burned as fuel, and accounting methods can let companies claim recycled content that is not physically in the product. Ask what share becomes new plastic.

Food packaging: the biggest opportunity

Food and drink packaging is the largest single use of plastic and the most common item found on beaches. The strongest solutions, in order of impact:

  1. Reuse where it works. Returnable cups and containers shared across many cafés, stadiums or a whole city, with common washing and return points, remove packaging entirely. Shared standards make the economics work.
  2. Deposits on drinks containers. Well-run deposit systems return more than 90 percent of bottles and cans, giving recyclers clean material to make new bottles.
  3. Design for recycling. Replacing multilayer pouches with a single plastic, using clear rather than coloured PET and wash-off labels, turns packaging that goes to landfill into packaging that gets recycled.
  4. Plastic-free materials for the hardest items. Moulded plant fibre replaces foam trays and clamshells; seaweed coatings and films replace plastic linings and sachets. Ask for PFAS-free grease barriers.
  5. Compostables only where composting exists. Compostable packaging helps for food-soiled items like tea bags and produce stickers, but only if it is collected and composted. Otherwise it behaves like any other waste.

Stopping plastic before it reaches the sea

About a thousand rivers carry most of the plastic that rivers bring to the ocean. That makes rivers, harbours and estuaries the most efficient places to catch it. Floating booms and conveyor interceptors, bubble curtains across canals and slow collection boats all work here. The projects that last are the ones that fund themselves by recycling what they collect and that move collection onto land over time, as RiverRecycle and One Earth One Ocean do.

Microplastics at the source

Much microplastic comes from things we use every day. Filters on washing machines catch synthetic fibres from clothing; France now requires them in new machines. Caps tethered to bottles stay with the bottle for recycling instead of becoming litter. Industry programmes to prevent the loss of raw plastic pellets from factories and ships stop pollution at its very first step.

Five questions to ask of any new plastic technology

  1. Does it reduce the total amount of new plastic made, or only move it around?
  2. What share of the output becomes a product again, rather than fuel or waste?
  3. Has it worked at commercial scale, with independent data, for at least a year?
  4. What are its energy use, emissions and chemical releases compared with the alternatives?
  5. Who pays to run it after the launch funding ends?

All technologies we track