Many of these have probably appeared in your news feed. While the research is real, they do not immediately represent industry-scale solutions.

"Advanced Recycling", or Chemical Recycling
- while laboratory successes are claimed, no one is doing at scale. Tracking Agilyx
Microbes

Science: Newly Identified Bacteria Break Down Tough Plastic
Plastivores - wax worms. They also excrete toxic ethylene glycol. Other "superworms" being researched in Korea.
Sending trash into space

In short, we produce too much waste. It would take millions of rockets. Source

False Solutions page from BeyondPlastics.org

These are copied verbatim from the BP page linked above...

INCINERATION “Waste to energy”, co-incineration in cement kilns and other industrial boilers, refuse-derived fuel

Not climate-friendly: burning 1 tonne of plastic emits nearly 3 tonnes of CO2 (Material Economics, 2018)
Toxic hazard: emits toxics including cancer-causing, endocrine- and immune-disrupting dioxins and furans; heavy metals including mercury, cadmium and lead; particulate matter (GAIA, 2019)
Incineration is more expensive than landfilling (World Bank, 2018); aging incinerators require significant additional publicfunds for upgrades (The New School, 2019)
Socio-economic and racial injustice: facilities are disproportionately sited in low-income and marginalized communities (The New School, 2019)
Competes with and undermines mechanical recycling (Nordic Council of Ministers, 2019)

High costs and low returns: has a track record of major failures and lostmore than $2 billion as of 2017 (GAIA, 2017)
Not climate-friendly: emits CO2 in both production and burning ofplastic-derived fuel, which is another fossil fuel (GAIA, 2020)
Toxic hazard: releases pollutants in gaseous emissions and by-productsin a similar way to waste incineration (GAIA, 2020)