However, plastic recycling, particularly the plastic
originated from WEEE, is not uncontested because of
the potential dissipation of hazardous substances
contained in recycled plastics (Sepulveda et al., 2010).
Also, presence of these substances can give rise to
high processing costs, depending on the disposal or
recovery route (Wager et al., 2010). Another study
(Schlummer et al., 2007) discussed a technological
approach consists of a density based enrichment of
styrenics, which are subjected to a solvolysis process
(CreaSolv process) to produce recycled products that
complied with the threshold values defined by the
European Directive on RoHS.