Extraction encourages recycling

Researchers at WRAP (Waste & Resources Action Programme) have trialled two new brominated flame retardant (BFR) extraction methods with the conclusion that BFR polymer treatment processes could potentially be commercially available within the next four years.

The European WEEE Directive encourages closed loop recycling by electronics manufacturers. WRAP has identified that one of the barriers to closed loop recycling of polymers from WEEE is the need to remove unwanted additives before they can be re-used. One of the most common additives are BFRs, some of which are known to give off harmful dioxins during reprocessing.

The three phase project, commissioned by WRAP and carried out by Axion Recycling, undertook a number of practical trials and process design work and looked at techniques to separate and remove BFRs from mixed WEEE polymers. The project trialled two different extraction methods: Creasolv and Centrevap. Separation and sorting techniques for WEEE polymers and BFR treatment processes were also researched and tested.