Greenhouse gas benefits from direct chemical recycling of mixed plastic waste

• GHG footprints of plastic waste chemical recycling to olefins are quantified. benefits quantified relative incumbent incineration with energy recovery. Chemical provides in the order 0.82 kg CO 2 -eq./kg waste. Future developments further increases from 2030. Dealing heterogeneous – i.e., high polymer heterogeneity, additives, and contaminants lowering greenhouse gas (GHG) emissions production requires integrated solutions. Here, we current future direct conversion post-consumer feedstock olefins, a base material for plastics. The net footprint this system is −0.04 treated, including credits avoided virgin electricity, heat, partial biogenic content feedstock. Comparing recovery presents treated. These were found increase 1.37 treated year 2030 when (i) decarbonization steam electricity (ii) process optimizations olefin yield through carbon capture utilization side-products.